UV-Irradiation Facilitating Pb Release from Recycled PVC Microplastics
In this study, we evaluated the release of Pb from recycled polyvinyl chloride (PVC) under UV-irradiation. The release process was dominated by two processes: H+ facilitated dissolution of Pb, and light-induced hydroxyl radical (·OH) caused C-H bond cleavage from PVC with the generation of alkyl radical. The effects of pH and coexisting low molecular weight organic acids (LMWOAs) were also evaluated. Lower pH speeds up the Pb release from MPs. The LMWOAs act as a filter of UV to restrain the Pb release. Overall, this study shows the release of Pb from recycled PVC MPs and indicates the potential risk of Pb to the en...
Source: Bulletin of Environmental Contamination and Toxicology - May 8, 2021 Category: Environmental Health Authors: Junxiang Ren Tongliang Wu Cun Liu Peixin Cui Fei Dang Qiang Yang Yujun Wang Source Type: research

Great-tailed Grackles (Quiscalus mexicanus) as Biomonitors of Atmospheric Heavy Metal Pollution in Urban Areas of Monterrey, Mexico
Bull Environ Contam Toxicol. 2021 May 8. doi: 10.1007/s00128-021-03250-3. Online ahead of print.ABSTRACTHeavy metals exposure has been linked to severe health problems. In Mexico, the Monterrey metropolitan area (MMA) is considered one of the most polluted industrial regions. Because birds have been used successfully as environmental biomonitors, the levels of lead, cadmium, and arsenic in feathers of Great-tailed grackles (Quiscalus mexicanus) from two sites within and one site outside the MMA were determined. One hundred birds were captured, samples were analyzed by atomic absorption spectrometry. Ciudad Universitaria ha...
Source: Bulletin of Environmental Contamination and Toxicology - May 8, 2021 Category: Environmental Health Authors: Antonio Guzm án-Velasco Javier I Ram írez-Cruz Gabriel Ruiz-Aym á Iram P Rodr íguez-Sánchez Lourdes Garza-Oca ñas Victor M Trevi ño-Alvarado Jos é I González-Rojas Alina Olalla-Kerstupp Source Type: research

Technology and Concept of Wastewater Treatment: Differences Between the Rhine Basin and the Yangtze Basin
Bull Environ Contam Toxicol. 2021 May 8. doi: 10.1007/s00128-021-03217-4. Online ahead of print.ABSTRACTBased on field visits and literature research, the situations of several typical wastewater treatment plants (WWTPs) in the Rhine basin and the Yangtze basin were investigated, to compare the technology and concept of wastewater treatment in these two areas. Our results showed that WWTPs in the Rhine performed well in pollutant removal, and have shifted their focus to energy production and nutrient recovery; While in the Yangtze basin, most WWTPs still operate on the sole concept of pollution treatment. Though China's WW...
Source: Bulletin of Environmental Contamination and Toxicology - May 8, 2021 Category: Environmental Health Authors: Chenyu Zhu Boyang Zhu Xueyuan Gu Mei Li Rong Ji Qing Zhou Source Type: research

Assessing the Effect of Chemical Dispersant Nokomis 3-F4 on the Degradation of a Heavy Crude Oil in Water by a Marine Microbial Consortium
Bull Environ Contam Toxicol. 2021 May 5. doi: 10.1007/s00128-021-03247-y. Online ahead of print.ABSTRACTDegradation efficiency of a heavy crude oil by a marine microbial consortium was evaluated in this study, with and without the addition of a chemical dispersant (Nokomis 3-F4). 15.50% of total petroleum hydrocarbons (TPH) were removed after 15 days of incubation without dispersant, with a degradation rate of 2.39 ± 0.22 mg L-1 day-1. In contrast, the addition of Nokomis 3-F4 increased TPH degradation up to 30.81% with a degradation rate of 5.07 ± 0.37 mg L-1 day-1. 16S rRNA gene sequencing indicated a domin...
Source: Bulletin of Environmental Contamination and Toxicology - May 6, 2021 Category: Environmental Health Authors: Mar ía Magdalena Uribe-Flores Ulises Garc ía-Cruz Emanuel Hern ández-Nuñez Daniel Cerqueda-Garc ía M Leopoldina Aguirre-Macedo Jos é Q García-Maldonado Source Type: research

Assessing the Effect of Chemical Dispersant Nokomis 3-F4 on the Degradation of a Heavy Crude Oil in Water by a Marine Microbial Consortium
Bull Environ Contam Toxicol. 2021 May 5. doi: 10.1007/s00128-021-03247-y. Online ahead of print.ABSTRACTDegradation efficiency of a heavy crude oil by a marine microbial consortium was evaluated in this study, with and without the addition of a chemical dispersant (Nokomis 3-F4). 15.50% of total petroleum hydrocarbons (TPH) were removed after 15 days of incubation without dispersant, with a degradation rate of 2.39 ± 0.22 mg L-1 day-1. In contrast, the addition of Nokomis 3-F4 increased TPH degradation up to 30.81% with a degradation rate of 5.07 ± 0.37 mg L-1 day-1. 16S rRNA gene sequencing indicated a domin...
Source: Bulletin of Environmental Contamination and Toxicology - May 6, 2021 Category: Environmental Health Authors: Mar ía Magdalena Uribe-Flores Ulises Garc ía-Cruz Emanuel Hern ández-Nuñez Daniel Cerqueda-Garc ía M Leopoldina Aguirre-Macedo Jos é Q García-Maldonado Source Type: research

Assessing the Effect of Chemical Dispersant Nokomis 3-F4 on the Degradation of a Heavy Crude Oil in Water by a Marine Microbial Consortium
Bull Environ Contam Toxicol. 2021 May 5. doi: 10.1007/s00128-021-03247-y. Online ahead of print.ABSTRACTDegradation efficiency of a heavy crude oil by a marine microbial consortium was evaluated in this study, with and without the addition of a chemical dispersant (Nokomis 3-F4). 15.50% of total petroleum hydrocarbons (TPH) were removed after 15 days of incubation without dispersant, with a degradation rate of 2.39 ± 0.22 mg L-1 day-1. In contrast, the addition of Nokomis 3-F4 increased TPH degradation up to 30.81% with a degradation rate of 5.07 ± 0.37 mg L-1 day-1. 16S rRNA gene sequencing indicated a domin...
Source: Bulletin of Environmental Contamination and Toxicology - May 6, 2021 Category: Environmental Health Authors: Mar ía Magdalena Uribe-Flores Ulises Garc ía-Cruz Emanuel Hern ández-Nuñez Daniel Cerqueda-Garc ía M Leopoldina Aguirre-Macedo Jos é Q García-Maldonado Source Type: research

Impact of pH on Pollutional Parameters of Textile Industry Wastewater with Use of Chlorella pyrenoidosa at Lab-Scale: A Green Approach
Bull Environ Contam Toxicol. 2021 May 5. doi: 10.1007/s00128-021-03208-5. Online ahead of print.ABSTRACTThe current study focused on the pollution remediation of textile industry wastewater by using Chlorella pyrenoidosa in two different physical forms: free algal biomass and immobilized algal biomass. The hypothesis behind the present study was to analyze the pollution reduction efficiency of immobilized algal biomass and free algal biomass on comparative scale on the basis of the adsorption process which is directly proportional with the surface area of the adsorbate. So, in this context the immobilized form of algae cou...
Source: Bulletin of Environmental Contamination and Toxicology - May 5, 2021 Category: Environmental Health Authors: Pradeep K Majhi Richa Kothari N K Arora Vimal Chandra Pandey V V Tyagi Source Type: research

Effects of Low-dose Mercury Exposure in Newborns on mRNA Expression Profiles
This study was designed to investigate the molecular mechanism of mercury (Hg) toxicity in the newborns by mRNA sequencing (mRNA-seq). A questionnaire survey, routine blood parameters of pregnant women, and umbilical cord blood (UCB) of newborns were collected. The median (25th percentile, 75th percentile) of total Hg (THg) concentrations in UCB of newborns was 3.63 (2.50, 6.19) µg/L. A total of 504 differentially expressed genes of mRNA were revealed between the case and control group, including 456 upregulated and 48 downregulated genes. The Gene Ontology (GO) analysis showed that differentially expressed genes wer...
Source: Bulletin of Environmental Contamination and Toxicology - May 4, 2021 Category: Environmental Health Authors: Haohao Liu Chanchan Zhang Fuli Wen Lin Feng Huiqun Wang Wenjuan Wang Ping Li Source Type: research

Effects of Low-dose Mercury Exposure in Newborns on mRNA Expression Profiles
This study was designed to investigate the molecular mechanism of mercury (Hg) toxicity in the newborns by mRNA sequencing (mRNA-seq). A questionnaire survey, routine blood parameters of pregnant women, and umbilical cord blood (UCB) of newborns were collected. The median (25th percentile, 75th percentile) of total Hg (THg) concentrations in UCB of newborns was 3.63 (2.50, 6.19) µg/L. A total of 504 differentially expressed genes of mRNA were revealed between the case and control group, including 456 upregulated and 48 downregulated genes. The Gene Ontology (GO) analysis showed that differentially expressed genes wer...
Source: Bulletin of Environmental Contamination and Toxicology - May 4, 2021 Category: Environmental Health Authors: Haohao Liu Chanchan Zhang Fuli Wen Lin Feng Huiqun Wang Wenjuan Wang Ping Li Source Type: research

Heavy Metal Accumulation and Copper Localization in Scopelophila cataractae in Thailand
Bull Environ Contam Toxicol. 2021 Apr 29. doi: 10.1007/s00128-021-03246-z. Online ahead of print.ABSTRACTFour specimens of gametophores and protonemata of Scopelophila cataractae (copper moss) were collected from a stream in Doi Suthep-Pui National Park, Thailand in order to determine heavy metal accumulation and Cu localization. The order of total metal concentrations in the protonemata and leaf cell surfaces of S. cataractae was Fe> Zn> Cu. Significant Cu values (> 400 mg kg-1) were found in both gametophores and protonemata. Growth substrates were considered as a key source of heavy metals in the sampling strea...
Source: Bulletin of Environmental Contamination and Toxicology - April 30, 2021 Category: Environmental Health Authors: Narin Printarakul Weeradej Meeinkuirt Source Type: research

Atmospheric Metal Biomonitoring Along a Highway Near Atlantic Rainforest Environmental Protection Areas in Southeastern Brazil
In this study, we evaluated air quality at a federal highway (BR-040) close to Atlantic Rainforest remnants by quantifying metals in biomonitor tissues by ICP-MS. Tillandsia usneoides and Tillandsia stricta plants were relocated to the investigation zone and collected after five months of exposure. Metal concentration profiles were evaluated using statistical analyses, namely exposure-to-reference (ER) ratios and enrichment factors (EF). Results indicate that V, Cr, Fe, Cu, Zn and Sn enrichment were observed in all study sites. The EF for Cr, Mn, Pb, Ni, Co, Cu, Zn, Cd, and Sn ranged from high to very high, indicating anth...
Source: Bulletin of Environmental Contamination and Toxicology - April 30, 2021 Category: Environmental Health Authors: Karmel Beringui Alex Rub én Huamán De La Cruz Luiz Francisco Pires Guimar ães Maia Adriana Gioda Source Type: research

Heavy Metal Accumulation and Copper Localization in Scopelophila cataractae in Thailand
Bull Environ Contam Toxicol. 2021 Apr 29. doi: 10.1007/s00128-021-03246-z. Online ahead of print.ABSTRACTFour specimens of gametophores and protonemata of Scopelophila cataractae (copper moss) were collected from a stream in Doi Suthep-Pui National Park, Thailand in order to determine heavy metal accumulation and Cu localization. The order of total metal concentrations in the protonemata and leaf cell surfaces of S. cataractae was Fe> Zn> Cu. Significant Cu values (> 400 mg kg-1) were found in both gametophores and protonemata. Growth substrates were considered as a key source of heavy metals in the sampling strea...
Source: Bulletin of Environmental Contamination and Toxicology - April 30, 2021 Category: Environmental Health Authors: Narin Printarakul Weeradej Meeinkuirt Source Type: research

Atmospheric Metal Biomonitoring Along a Highway Near Atlantic Rainforest Environmental Protection Areas in Southeastern Brazil
In this study, we evaluated air quality at a federal highway (BR-040) close to Atlantic Rainforest remnants by quantifying metals in biomonitor tissues by ICP-MS. Tillandsia usneoides and Tillandsia stricta plants were relocated to the investigation zone and collected after five months of exposure. Metal concentration profiles were evaluated using statistical analyses, namely exposure-to-reference (ER) ratios and enrichment factors (EF). Results indicate that V, Cr, Fe, Cu, Zn and Sn enrichment were observed in all study sites. The EF for Cr, Mn, Pb, Ni, Co, Cu, Zn, Cd, and Sn ranged from high to very high, indicating anth...
Source: Bulletin of Environmental Contamination and Toxicology - April 30, 2021 Category: Environmental Health Authors: Karmel Beringui Alex Rub én Huamán De La Cruz Luiz Francisco Pires Guimar ães Maia Adriana Gioda Source Type: research

Heavy Metal Accumulation and Copper Localization in Scopelophila cataractae in Thailand
Bull Environ Contam Toxicol. 2021 Apr 29. doi: 10.1007/s00128-021-03246-z. Online ahead of print.ABSTRACTFour specimens of gametophores and protonemata of Scopelophila cataractae (copper moss) were collected from a stream in Doi Suthep-Pui National Park, Thailand in order to determine heavy metal accumulation and Cu localization. The order of total metal concentrations in the protonemata and leaf cell surfaces of S. cataractae was Fe> Zn> Cu. Significant Cu values (> 400 mg kg-1) were found in both gametophores and protonemata. Growth substrates were considered as a key source of heavy metals in the sampling strea...
Source: Bulletin of Environmental Contamination and Toxicology - April 30, 2021 Category: Environmental Health Authors: Narin Printarakul Weeradej Meeinkuirt Source Type: research

Atmospheric Metal Biomonitoring Along a Highway Near Atlantic Rainforest Environmental Protection Areas in Southeastern Brazil
In this study, we evaluated air quality at a federal highway (BR-040) close to Atlantic Rainforest remnants by quantifying metals in biomonitor tissues by ICP-MS. Tillandsia usneoides and Tillandsia stricta plants were relocated to the investigation zone and collected after five months of exposure. Metal concentration profiles were evaluated using statistical analyses, namely exposure-to-reference (ER) ratios and enrichment factors (EF). Results indicate that V, Cr, Fe, Cu, Zn and Sn enrichment were observed in all study sites. The EF for Cr, Mn, Pb, Ni, Co, Cu, Zn, Cd, and Sn ranged from high to very high, indicating anth...
Source: Bulletin of Environmental Contamination and Toxicology - April 30, 2021 Category: Environmental Health Authors: Karmel Beringui Alex Rub én Huamán De La Cruz Luiz Francisco Pires Guimar ães Maia Adriana Gioda Source Type: research

Heavy Metal Accumulation and Copper Localization in Scopelophila cataractae in Thailand
Bull Environ Contam Toxicol. 2021 Apr 29. doi: 10.1007/s00128-021-03246-z. Online ahead of print.ABSTRACTFour specimens of gametophores and protonemata of Scopelophila cataractae (copper moss) were collected from a stream in Doi Suthep-Pui National Park, Thailand in order to determine heavy metal accumulation and Cu localization. The order of total metal concentrations in the protonemata and leaf cell surfaces of S. cataractae was Fe> Zn> Cu. Significant Cu values (> 400 mg kg-1) were found in both gametophores and protonemata. Growth substrates were considered as a key source of heavy metals in the sampling strea...
Source: Bulletin of Environmental Contamination and Toxicology - April 30, 2021 Category: Environmental Health Authors: Narin Printarakul Weeradej Meeinkuirt Source Type: research

Atmospheric Metal Biomonitoring Along a Highway Near Atlantic Rainforest Environmental Protection Areas in Southeastern Brazil
In this study, we evaluated air quality at a federal highway (BR-040) close to Atlantic Rainforest remnants by quantifying metals in biomonitor tissues by ICP-MS. Tillandsia usneoides and Tillandsia stricta plants were relocated to the investigation zone and collected after five months of exposure. Metal concentration profiles were evaluated using statistical analyses, namely exposure-to-reference (ER) ratios and enrichment factors (EF). Results indicate that V, Cr, Fe, Cu, Zn and Sn enrichment were observed in all study sites. The EF for Cr, Mn, Pb, Ni, Co, Cu, Zn, Cd, and Sn ranged from high to very high, indicating anth...
Source: Bulletin of Environmental Contamination and Toxicology - April 30, 2021 Category: Environmental Health Authors: Karmel Beringui Alex Rub én Huamán De La Cruz Luiz Francisco Pires Guimar ães Maia Adriana Gioda Source Type: research

Acute Exposure to Crude Oil Induces Epigenetic, Transcriptional and Metabolic Changes in Juvenile Sciaenops ocellatus
In this study, we report molecular and metabolic responses of Sciaenops ocellatus during an acute oil exposure bioassay (100, 800 and 8000 mg 1-1 of crude oil). The global DNA methylation and expression profiles of key genes of the xenobiotic biotransformation system (cytochrome P450 1A [cyp1a] and glutathione S-tranferase [gst]), oxidative stress system (glutathione peroxidase [gpx], catalase [cat], aldehyde dehydrogenase [aldh]) and reproductive system (vitellogenin [vtg]) were evaluated. At the metabolic level, we evaluated the concentration of four polycyclic aromatic hydrocarbon (PAH) metabolites -hydroxybenzo[a]pyren...
Source: Bulletin of Environmental Contamination and Toxicology - April 29, 2021 Category: Environmental Health Authors: Mayra A Ca ñizares-Martínez Mercedes Quintanilla-Mena Marcela Del-R ío-García Isajav Rivas-Reyes Mar ía V Patiño-Suárez Victor M Vidal-Mart ínez M Leopoldina Aguirre-Macedo Carlos A Puch-Hau Source Type: research

Impact on Fertility Rate and Embryo-Larval Development Due to the Association Acidification, Ocean Warming and Lead Contamination of a Sea Urchin Echinometra luc.er (Echinodermata: Echinoidea)
Bull Environ Contam Toxicol. 2021 Apr 29. doi: 10.1007/s00128-021-03225-4. Online ahead of print.ABSTRACTOcean warming and acidification can cause deleterious effects on marine biota, which may be potentialized when associated with metal pollution. Thus, the aim of this work was to evaluate the effects of pH decrease, temperature increase and lead contamination on fertility rate and embryo-larval development of Echinometra luc.er. Gametes and embryos were exposed at pH 8.2 (control) and 7.5; at 26°C (control) and 28°C; and at lead concentrations of 0 (control), 125, 250 and 500 μg/L. These conditions were tested...
Source: Bulletin of Environmental Contamination and Toxicology - April 29, 2021 Category: Environmental Health Authors: L ívia Sperandio Caetano Tatiana Miura Pereira J éssica Dandara Envangelista Dandara Silva Cabral Gabriel Carvalho Coppo Let ícia Alves de Souza Ant ônio Batista Anderson Ot ávio Arruda Heringer Adriana Regina Chippari-Gomes Source Type: research

Aggregation and Deposition Kinetics of Polystyrene Microplastics and Nanoplastics in Aquatic Environment
Bull Environ Contam Toxicol. 2021 Apr 29. doi: 10.1007/s00128-021-03239-y. Online ahead of print.ABSTRACTMicroplastics (MPs) and nanoplastics (NPs) attract widespread attention due to their final threats to human health. Here, 50 nm and 500 nm polystyrene particles (PS50 and PS500) were selected as the typical NPs and MPs, respectively. Their aggregation kinetics was monitored, and their deposition was investigated on silica and alumina surfaces using quartz crystal microbalance with dissipation monitoring (QCM-D). PS500 has higher critical coagulation concentration (CCC) values than PS50, because of the weaker Brownian di...
Source: Bulletin of Environmental Contamination and Toxicology - April 29, 2021 Category: Environmental Health Authors: Ling Liu Jian Song Min Zhang Wei Jiang Source Type: research

Screening and Risk Evaluation of Organic Contaminants in an Urban Wetland Fed with Wastewater Effluents
Bull Environ Contam Toxicol. 2021 Apr 28. doi: 10.1007/s00128-021-03243-2. Online ahead of print.ABSTRACTWastewater release in an urban wetland in Mexico City entails discharging complex mixtures of hundreds of chemical substances into the aquatic system. Therefore, in order to identify the most important contaminants, a GC-MS screening method coupled with deconvolution software was used. LC50 values from ECOSAR and Toxic Units were obtained to identify the organic pollutants-of-concern and to pinpoint the most ecotoxic sites. The results showed that, even though the area has intensive farming, agrochemicals are not of con...
Source: Bulletin of Environmental Contamination and Toxicology - April 28, 2021 Category: Environmental Health Authors: Jorge Meza-Gonz ález Manuel Hern ández-Quiróz Francisco Rojo-Callejas Erick Hjort-Colunga Marisa Mazari-Hiriart Elsa Valiente-Riveros Omar Arellano-Aguilar Claudia Ponce de Le ón-Hill Source Type: research

Screening and Risk Evaluation of Organic Contaminants in an Urban Wetland Fed with Wastewater Effluents
Bull Environ Contam Toxicol. 2021 Apr 28. doi: 10.1007/s00128-021-03243-2. Online ahead of print.ABSTRACTWastewater release in an urban wetland in Mexico City entails discharging complex mixtures of hundreds of chemical substances into the aquatic system. Therefore, in order to identify the most important contaminants, a GC-MS screening method coupled with deconvolution software was used. LC50 values from ECOSAR and Toxic Units were obtained to identify the organic pollutants-of-concern and to pinpoint the most ecotoxic sites. The results showed that, even though the area has intensive farming, agrochemicals are not of con...
Source: Bulletin of Environmental Contamination and Toxicology - April 28, 2021 Category: Environmental Health Authors: Jorge Meza-Gonz ález Manuel Hern ández-Quiróz Francisco Rojo-Callejas Erick Hjort-Colunga Marisa Mazari-Hiriart Elsa Valiente-Riveros Omar Arellano-Aguilar Claudia Ponce de Le ón-Hill Source Type: research

Concentrations of Silver, Chrome, Manganese and Nickel in Two Stranded Whale Sharks (Rhincodon typus) from the Gulf of California
Bull Environ Contam Toxicol. 2021 Apr 27. doi: 10.1007/s00128-021-03244-1. Online ahead of print.ABSTRACTConcentrations of Ag, Cr, Mn and Ni were measured in tissues of two whale sharks (Rhincodon typus) stranded in La Paz Bay (LAP) and Punta Bufeo (PB), Gulf of California, during 2017 and 2018. The concentration range of Ni (0.012-1.12 µg/g ww) and Cr (0.16-5.21) in the epidermis of both specimens was lower compared to the concentrations found in the epidermis of whale sharks from East Africa. The whale shark from LAP exhibited higher levels of Mn (4.45 µg/g ww), Ni (0.284 µg/g ww) and Cr (5.21 µg/...
Source: Bulletin of Environmental Contamination and Toxicology - April 27, 2021 Category: Environmental Health Authors: Francesca Pancaldi Federico P áez-Osuna Mart ín Federico Soto-Jiménez Darren A Whitehead Rogelio Gonz ález-Armas Abraham V ázquez-Haikin Edgar Eduardo Becerril-Garc ía Felipe Galv án-Magaña Source Type: research

Impacts of Redox Conditions on Arsenic and Antimony Transformation in Paddy Soil: Kinetics and Functional Bacteria
Bull Environ Contam Toxicol. 2021 Apr 27. doi: 10.1007/s00128-021-03242-3. Online ahead of print.ABSTRACTArsenic (As) and antimony (Sb) are known carcinogens and are present as contaminants in paddy soils. However, the complicated dynamics of the mobility of these metalloids have not been well understood due to changing redox conditions in paddy soils. Herein, the kinetics of dissolved As and Sb, and functional bacteria/genes were examined in a paddy soil cultured under aerobic and anaerobic conditions. Under aerobic condition, dissolved As(V) and Sb(V) increased constantly due to sulfide oxidation by O2 and bound As and S...
Source: Bulletin of Environmental Contamination and Toxicology - April 27, 2021 Category: Environmental Health Authors: Bingqing Xia Yang Yang Yundang Wu Xiaomin Li Fangbai Li Tongxu Liu Source Type: research

Concentrations of Silver, Chrome, Manganese and Nickel in Two Stranded Whale Sharks (Rhincodon typus) from the Gulf of California
Bull Environ Contam Toxicol. 2021 Apr 27. doi: 10.1007/s00128-021-03244-1. Online ahead of print.ABSTRACTConcentrations of Ag, Cr, Mn and Ni were measured in tissues of two whale sharks (Rhincodon typus) stranded in La Paz Bay (LAP) and Punta Bufeo (PB), Gulf of California, during 2017 and 2018. The concentration range of Ni (0.012-1.12 µg/g ww) and Cr (0.16-5.21) in the epidermis of both specimens was lower compared to the concentrations found in the epidermis of whale sharks from East Africa. The whale shark from LAP exhibited higher levels of Mn (4.45 µg/g ww), Ni (0.284 µg/g ww) and Cr (5.21 µg/...
Source: Bulletin of Environmental Contamination and Toxicology - April 27, 2021 Category: Environmental Health Authors: Francesca Pancaldi Federico P áez-Osuna Mart ín Federico Soto-Jiménez Darren A Whitehead Rogelio Gonz ález-Armas Abraham V ázquez-Haikin Edgar Eduardo Becerril-Garc ía Felipe Galv án-Magaña Source Type: research

Impacts of Redox Conditions on Arsenic and Antimony Transformation in Paddy Soil: Kinetics and Functional Bacteria
Bull Environ Contam Toxicol. 2021 Apr 27. doi: 10.1007/s00128-021-03242-3. Online ahead of print.ABSTRACTArsenic (As) and antimony (Sb) are known carcinogens and are present as contaminants in paddy soils. However, the complicated dynamics of the mobility of these metalloids have not been well understood due to changing redox conditions in paddy soils. Herein, the kinetics of dissolved As and Sb, and functional bacteria/genes were examined in a paddy soil cultured under aerobic and anaerobic conditions. Under aerobic condition, dissolved As(V) and Sb(V) increased constantly due to sulfide oxidation by O2 and bound As and S...
Source: Bulletin of Environmental Contamination and Toxicology - April 27, 2021 Category: Environmental Health Authors: Bingqing Xia Yang Yang Yundang Wu Xiaomin Li Fangbai Li Tongxu Liu Source Type: research

Exposure to Landfill Leachates Affects the Embryonic Development of Zebrafish, Danio rerio: A Case Study in Yucatan, Mexico
This study reveals the high toxicity of landfill leachates that could contaminate the aquifer of the Yucatan Peninsula and threaten the health of living organisms.PMID:33893519 | DOI:10.1007/s00128-021-03237-0 (Source: Bulletin of Environmental Contamination and Toxicology)
Source: Bulletin of Environmental Contamination and Toxicology - April 24, 2021 Category: Environmental Health Authors: Ana M Escalante-Ma ñe Emanuel Hern ández-Nuñez Roger I M éndez-Novelo Germ án Giácoman-Vallejos Avel A Gonz ález-Sánchez Mercedes A Quintanilla-Mena Mariana E Romell ón-Orozco Carlos Puch-Hau Source Type: research

Exposure to Landfill Leachates Affects the Embryonic Development of Zebrafish, Danio rerio: A Case Study in Yucatan, Mexico
This study reveals the high toxicity of landfill leachates that could contaminate the aquifer of the Yucatan Peninsula and threaten the health of living organisms.PMID:33893519 | DOI:10.1007/s00128-021-03237-0 (Source: Bulletin of Environmental Contamination and Toxicology)
Source: Bulletin of Environmental Contamination and Toxicology - April 24, 2021 Category: Environmental Health Authors: Ana M Escalante-Ma ñe Emanuel Hern ández-Nuñez Roger I M éndez-Novelo Germ án Giácoman-Vallejos Avel A Gonz ález-Sánchez Mercedes A Quintanilla-Mena Mariana E Romell ón-Orozco Carlos Puch-Hau Source Type: research

Exposure to Landfill Leachates Affects the Embryonic Development of Zebrafish, Danio rerio: A Case Study in Yucatan, Mexico
This study reveals the high toxicity of landfill leachates that could contaminate the aquifer of the Yucatan Peninsula and threaten the health of living organisms.PMID:33893519 | DOI:10.1007/s00128-021-03237-0 (Source: Bulletin of Environmental Contamination and Toxicology)
Source: Bulletin of Environmental Contamination and Toxicology - April 24, 2021 Category: Environmental Health Authors: Ana M Escalante-Ma ñe Emanuel Hern ández-Nuñez Roger I M éndez-Novelo Germ án Giácoman-Vallejos Avel A Gonz ález-Sánchez Mercedes A Quintanilla-Mena Mariana E Romell ón-Orozco Carlos Puch-Hau Source Type: research

Spatial and Temporal Variations of Vanadium and Cadmium in Surface Water from the Yucatan Shelf
Bull Environ Contam Toxicol. 2021 Apr 22. doi: 10.1007/s00128-021-03234-3. Online ahead of print.ABSTRACTSurface water samples from the Yucatan shelf presented Cd concentrations similar to those reported internationally for non-polluted coastal and marine waters. V concentrations, on the other hand, fall within the range of anthropogenically polluted waters (25% of the sampling sites). In the study area, the probable sources of V could be: (1) carbonate sediments leaching V into the water column and co-transported with fine sediments resuspending as a result of the complex hydrodynamics in the area or, (2) accidental spill...
Source: Bulletin of Environmental Contamination and Toxicology - April 23, 2021 Category: Environmental Health Authors: F Arcega-Cabrera G Gold-Bouchot E Lamas-Cos ío A D ótor-Almazán V Ceja-Moreno I Mari ño-Tapia O Zapata-P érez I Oceguera-Vargas Source Type: research

Diversity of Native Arbuscular Mycorrhiza Extraradical Mycelium Influences Antioxidant Enzyme Activity in Wheat Grown Under Mn Toxicity
Bull Environ Contam Toxicol. 2021 Apr 23. doi: 10.1007/s00128-021-03240-5. Online ahead of print.ABSTRACTSustainable agricultural practices based on the development of native arbuscular mycorrhizal fungi (AMF) can improve crop growth and stress tolerance in acidic soils with manganese toxicity. The beneficial effects are stronger when crops are colonized early in development by an intact extraradical mycelium (ERM), but are dependent on AMF assemblage. In wheat colonized by AMF associated to Lolium rigidum L. (LOL) or Ornithopus compressus (ORN), growth and stress tolerance are differently influenced. In the present study,...
Source: Bulletin of Environmental Contamination and Toxicology - April 23, 2021 Category: Environmental Health Authors: Jorge M S Faria Ana Paula Pinto Dora Teixeira Isabel Brito M ário Carvalho Source Type: research

Assessment of Microplastic and Organophosphate Pesticides Contamination in Fiddler Crabs from a Ramsar Site in the Estuary of Guayas River, Ecuador
Bull Environ Contam Toxicol. 2021 Apr 23. doi: 10.1007/s00128-021-03238-z. Online ahead of print.ABSTRACTWe assessed the concentration of organophosphate pesticides (OPs) and microplastics (MPs) in water and sediments from the burrows, and tissues of the fiddler crabs Leptuca festae and Minuca ecuadoriensis, from Isla Santay, a Ramsar site in the estuary of the Guayas River, Ecuador. MPs concentrations in the burrows were 660 ± 174.36 items kg-1 (w.w.) and 26 ± 1 items L-1 in collected sediments and water, respectively. Regarding OPs, water and sediment concentrations were up to 26 times above the USEPA thres...
Source: Bulletin of Environmental Contamination and Toxicology - April 23, 2021 Category: Environmental Health Authors: Lipsi Villegas Marcela Cabrera Mariana V Capparelli Source Type: research

Spatial and Temporal Variations of Vanadium and Cadmium in Surface Water from the Yucatan Shelf
Bull Environ Contam Toxicol. 2021 Apr 22. doi: 10.1007/s00128-021-03234-3. Online ahead of print.ABSTRACTSurface water samples from the Yucatan shelf presented Cd concentrations similar to those reported internationally for non-polluted coastal and marine waters. V concentrations, on the other hand, fall within the range of anthropogenically polluted waters (25% of the sampling sites). In the study area, the probable sources of V could be: (1) carbonate sediments leaching V into the water column and co-transported with fine sediments resuspending as a result of the complex hydrodynamics in the area or, (2) accidental spill...
Source: Bulletin of Environmental Contamination and Toxicology - April 23, 2021 Category: Environmental Health Authors: F Arcega-Cabrera G Gold-Bouchot E Lamas-Cos ío A D ótor-Almazán V Ceja-Moreno I Mari ño-Tapia O Zapata-P érez I Oceguera-Vargas Source Type: research

Diversity of Native Arbuscular Mycorrhiza Extraradical Mycelium Influences Antioxidant Enzyme Activity in Wheat Grown Under Mn Toxicity
Bull Environ Contam Toxicol. 2021 Apr 23. doi: 10.1007/s00128-021-03240-5. Online ahead of print.ABSTRACTSustainable agricultural practices based on the development of native arbuscular mycorrhizal fungi (AMF) can improve crop growth and stress tolerance in acidic soils with manganese toxicity. The beneficial effects are stronger when crops are colonized early in development by an intact extraradical mycelium (ERM), but are dependent on AMF assemblage. In wheat colonized by AMF associated to Lolium rigidum L. (LOL) or Ornithopus compressus (ORN), growth and stress tolerance are differently influenced. In the present study,...
Source: Bulletin of Environmental Contamination and Toxicology - April 23, 2021 Category: Environmental Health Authors: Jorge M S Faria Ana Paula Pinto Dora Teixeira Isabel Brito M ário Carvalho Source Type: research

Assessment of Microplastic and Organophosphate Pesticides Contamination in Fiddler Crabs from a Ramsar Site in the Estuary of Guayas River, Ecuador
Bull Environ Contam Toxicol. 2021 Apr 23. doi: 10.1007/s00128-021-03238-z. Online ahead of print.ABSTRACTWe assessed the concentration of organophosphate pesticides (OPs) and microplastics (MPs) in water and sediments from the burrows, and tissues of the fiddler crabs Leptuca festae and Minuca ecuadoriensis, from Isla Santay, a Ramsar site in the estuary of the Guayas River, Ecuador. MPs concentrations in the burrows were 660 ± 174.36 items kg-1 (w.w.) and 26 ± 1 items L-1 in collected sediments and water, respectively. Regarding OPs, water and sediment concentrations were up to 26 times above the USEPA thres...
Source: Bulletin of Environmental Contamination and Toxicology - April 23, 2021 Category: Environmental Health Authors: Lipsi Villegas Marcela Cabrera Mariana V Capparelli Source Type: research

Variation in Polycyclic Aromatic Hydrocarbon Contamination Between Native and Introduced Species of Fishes of Pallikaranai Wetland, Chennai, Tamil Nadu, India
Bull Environ Contam Toxicol. 2021 Apr 22. doi: 10.1007/s00128-021-03207-6. Online ahead of print.ABSTRACTThe impacts of invasive fish species on recipient communities are mostly considered a threat to the biodiversity of freshwater systems. A characteristic of introduced species turning invasive is their higher tolerance to environmental stressors. To understand if non-native fishes in Pallikaranai wetland, Tamil Nadu, India, are more tolerant to anthropogenic pressures in the Wetland, we assessed the variation in Polycyclic Aromatic Hydrocarbon contamination between introduced and native fish species. Mean levels of Napht...
Source: Bulletin of Environmental Contamination and Toxicology - April 22, 2021 Category: Environmental Health Authors: Mythreyi Devarajan Subramanian Muralidharan Karthikeyan Prakasham Kanthan Nambirajan Source Type: research

Analysis of the Cd(II) Adsorption Performance and Mechanisms by Soybean Root Biochar: Effect of Pyrolysis Temperatures
In this study, we evaluated the adsorption capacities and mechanisms of soybean root biochar pyrolyzed at four different temperatures. The results indicate the biochar properties are significantly determined by pyrolysis temperature, which affects the removal mechanisms of Cd(II) consequently. Microstructure characteristics and mechanism analysis further suggest that Cd(II)-π interactions and sulfur-containing functional groups are the main mechanisms of Cd(II) adsorption. This work shows a new perspective to explain the adsorption mechanisms onto biochar adsorbents and has a benefit for the exploitation of economical a...
Source: Bulletin of Environmental Contamination and Toxicology - April 21, 2021 Category: Environmental Health Authors: Qiuyue Wang Peixin Cui Qiang Yang Long Chen Weixuan Wang Wangang Deng Yujun Wang Source Type: research

Analysis of the Cd(II) Adsorption Performance and Mechanisms by Soybean Root Biochar: Effect of Pyrolysis Temperatures
In this study, we evaluated the adsorption capacities and mechanisms of soybean root biochar pyrolyzed at four different temperatures. The results indicate the biochar properties are significantly determined by pyrolysis temperature, which affects the removal mechanisms of Cd(II) consequently. Microstructure characteristics and mechanism analysis further suggest that Cd(II)-π interactions and sulfur-containing functional groups are the main mechanisms of Cd(II) adsorption. This work shows a new perspective to explain the adsorption mechanisms onto biochar adsorbents and has a benefit for the exploitation of economical a...
Source: Bulletin of Environmental Contamination and Toxicology - April 21, 2021 Category: Environmental Health Authors: Qiuyue Wang Peixin Cui Qiang Yang Long Chen Weixuan Wang Wangang Deng Yujun Wang Source Type: research

Monitoring of Neonicotinoid Pesticides in Water-Soil Systems Along the Agro-Landscapes of the Cauvery Delta Region, South India
Bull Environ Contam Toxicol. 2021 Apr 20. doi: 10.1007/s00128-021-03233-4. Online ahead of print.ABSTRACTThe prophylactic use of neonicotinoids in paddy fields has raised concern due to its toxicity to ecological systems and human health. The present study evaluated the concentrations of neonicotinoids such as clothianidin, imidacloprid, thiamethoxam, acetamiprid, and thiacloprid in the water-soil systems of the paddy fields, and their potential discharge into the groundwater along the Cauvery delta region, South India. Though neonicotinoids are extensively sprayed in the paddy fields, the concentration of residues analyze...
Source: Bulletin of Environmental Contamination and Toxicology - April 20, 2021 Category: Environmental Health Authors: Manjula Menon Rangaswamy Mohanraj Wangkheirakpam Sujata Source Type: research

Biomonitoring as a Nature-Based Solution to Assess Atmospheric Pollution and Impacts on Public Health
In this study, biomonitoring with Tillandsia usneoides was applied as a NbS tool to evaluate air quality in an important port urban area in the city of Guarujá, Brazil, affected by industrial and vehicular emissions. It was observed that cadmium mass fractions were at least forty times higher than the control area with one-month exposition.PMID:33877373 | DOI:10.1007/s00128-021-03205-8 (Source: Bulletin of Environmental Contamination and Toxicology)
Source: Bulletin of Environmental Contamination and Toxicology - April 20, 2021 Category: Environmental Health Authors: Carolina Yume Sawamura Theophilo Andreza Portella Ribeiro Edson Gon çalves Moreira Sidnei Aranha Harry Alberto Bollmann Cleiton Jord ão Santos Anderson de Oliveira Sidney Dos Santos Mitiko Saiki Paulo Hil ário Nascimento Saldiva Maur ício Lamano Ferre Source Type: research

Dominant Contribution of a Lake's Internal Pollution to Eutrophication During Rapid Urbanization
In this study, a lake that had been formed during ten years of urbanization had become hyper-eutrophic. TP mainly contributed to the eutrophication and algal bloom in the lake. While the release potential of TP fluctuated, TN, particularly NH3-N, was constantly released from the sediment. Concentrations of anthropogenic metals (Pb, Cu and Cr) increased with the increasing depth of the sediment. Even for a lake that had formed rapidly in a short period, the internal phosphorus released from sediment was 1.9-times higher than that of the external discharge. The dominating contribution of internal pollution from sediment requ...
Source: Bulletin of Environmental Contamination and Toxicology - April 20, 2021 Category: Environmental Health Authors: Xiaolei Zheng Gaoxiang Liu Wei Yang Xinxin Peng Huazu Liu Hong Li Wei Li Source Type: research

Monitoring of Neonicotinoid Pesticides in Water-Soil Systems Along the Agro-Landscapes of the Cauvery Delta Region, South India
Bull Environ Contam Toxicol. 2021 Apr 20. doi: 10.1007/s00128-021-03233-4. Online ahead of print.ABSTRACTThe prophylactic use of neonicotinoids in paddy fields has raised concern due to its toxicity to ecological systems and human health. The present study evaluated the concentrations of neonicotinoids such as clothianidin, imidacloprid, thiamethoxam, acetamiprid, and thiacloprid in the water-soil systems of the paddy fields, and their potential discharge into the groundwater along the Cauvery delta region, South India. Though neonicotinoids are extensively sprayed in the paddy fields, the concentration of residues analyze...
Source: Bulletin of Environmental Contamination and Toxicology - April 20, 2021 Category: Environmental Health Authors: Manjula Menon Rangaswamy Mohanraj Wangkheirakpam Sujata Source Type: research

Biomonitoring as a Nature-Based Solution to Assess Atmospheric Pollution and Impacts on Public Health
In this study, biomonitoring with Tillandsia usneoides was applied as a NbS tool to evaluate air quality in an important port urban area in the city of Guarujá, Brazil, affected by industrial and vehicular emissions. It was observed that cadmium mass fractions were at least forty times higher than the control area with one-month exposition.PMID:33877373 | DOI:10.1007/s00128-021-03205-8 (Source: Bulletin of Environmental Contamination and Toxicology)
Source: Bulletin of Environmental Contamination and Toxicology - April 20, 2021 Category: Environmental Health Authors: Carolina Yume Sawamura Theophilo Andreza Portella Ribeiro Edson Gon çalves Moreira Sidnei Aranha Harry Alberto Bollmann Cleiton Jord ão Santos Anderson de Oliveira Sidney Dos Santos Mitiko Saiki Paulo Hil ário Nascimento Saldiva Maur ício Lamano Ferre Source Type: research

Dominant Contribution of a Lake's Internal Pollution to Eutrophication During Rapid Urbanization
In this study, a lake that had been formed during ten years of urbanization had become hyper-eutrophic. TP mainly contributed to the eutrophication and algal bloom in the lake. While the release potential of TP fluctuated, TN, particularly NH3-N, was constantly released from the sediment. Concentrations of anthropogenic metals (Pb, Cu and Cr) increased with the increasing depth of the sediment. Even for a lake that had formed rapidly in a short period, the internal phosphorus released from sediment was 1.9-times higher than that of the external discharge. The dominating contribution of internal pollution from sediment requ...
Source: Bulletin of Environmental Contamination and Toxicology - April 20, 2021 Category: Environmental Health Authors: Xiaolei Zheng Gaoxiang Liu Wei Yang Xinxin Peng Huazu Liu Hong Li Wei Li Source Type: research

Associations of Dietary Exposure to Organochlorine Pesticides from Plant-Origin Foods with Lipid Metabolism and Inflammation in Women: A Multiple Follow-up Study in North China
This study explored effects of dietary OCP intake from plant-origin foods (cereals, fruits, and vegetables) consumption on lipid metabolism and inflammation of women using a multiple follow-up study. The results showed that dietary intake of p,p'-dichlorodiphenyltrichloroethane (DDT) [β = - 10.11, 95% confidence interval (95%CI): - 17.32, - 2.905] and o,p'-dichlorodiphenyldichloroethylene (DDE) (β = - 6.077, 95%CI: - 9.954, - 2.200) were overall negatively associated with serum high-density lipoprotein cholesterol (HDL), whereas other OCPs were not. Serum interleukin (IL)-8 was positively associated with intake o...
Source: Bulletin of Environmental Contamination and Toxicology - April 18, 2021 Category: Environmental Health Authors: Xuepeng Wang Miaomiao Gao Yixi Tan Qi Li Junxi Chen Changxin Lan Bahabieke Jiangtulu Bin Wang Guofeng Shen Yanxin Yu Zhiwen Li Source Type: research

Associations of Dietary Exposure to Organochlorine Pesticides from Plant-Origin Foods with Lipid Metabolism and Inflammation in Women: A Multiple Follow-up Study in North China
This study explored effects of dietary OCP intake from plant-origin foods (cereals, fruits, and vegetables) consumption on lipid metabolism and inflammation of women using a multiple follow-up study. The results showed that dietary intake of p,p'-dichlorodiphenyltrichloroethane (DDT) [β = - 10.11, 95% confidence interval (95%CI): - 17.32, - 2.905] and o,p'-dichlorodiphenyldichloroethylene (DDE) (β = - 6.077, 95%CI: - 9.954, - 2.200) were overall negatively associated with serum high-density lipoprotein cholesterol (HDL), whereas other OCPs were not. Serum interleukin (IL)-8 was positively associated with intake o...
Source: Bulletin of Environmental Contamination and Toxicology - April 18, 2021 Category: Environmental Health Authors: Xuepeng Wang Miaomiao Gao Yixi Tan Qi Li Junxi Chen Changxin Lan Bahabieke Jiangtulu Bin Wang Guofeng Shen Yanxin Yu Zhiwen Li Source Type: research

Effect of Polystyrene Microplastics of Different Sizes to Escherichia coli and Bacillus cereus
Bull Environ Contam Toxicol. 2021 Apr 16. doi: 10.1007/s00128-021-03215-6. Online ahead of print.ABSTRACTThe toxicity of polystyrene (PS) particles of different sizes was investigated using Gram-negative Escherichia coli and Gram-positive Bacillus cereus. PS particles could inhibit the cell growth of E. coli but promote the cell growth of B. cereus, and this difference might be attributed to different composition in their cell walls and the different interactions between the two bacteria and PS particles. Direct adhesion of E. coli cells on the surface of 5 μm PS microbeads by flagella was observed, indicating the putat...
Source: Bulletin of Environmental Contamination and Toxicology - April 17, 2021 Category: Environmental Health Authors: Xianliang Yi Wentao Li Yang Liu Kaiming Yang Minghuo Wu Hao Zhou Source Type: research

Effect of Polystyrene Microplastics of Different Sizes to Escherichia coli and Bacillus cereus
Bull Environ Contam Toxicol. 2021 Apr 16. doi: 10.1007/s00128-021-03215-6. Online ahead of print.ABSTRACTThe toxicity of polystyrene (PS) particles of different sizes was investigated using Gram-negative Escherichia coli and Gram-positive Bacillus cereus. PS particles could inhibit the cell growth of E. coli but promote the cell growth of B. cereus, and this difference might be attributed to different composition in their cell walls and the different interactions between the two bacteria and PS particles. Direct adhesion of E. coli cells on the surface of 5 μm PS microbeads by flagella was observed, indicating the putat...
Source: Bulletin of Environmental Contamination and Toxicology - April 17, 2021 Category: Environmental Health Authors: Xianliang Yi Wentao Li Yang Liu Kaiming Yang Minghuo Wu Hao Zhou Source Type: research

Socioeconomic Relation with Plastic Consumption on 61 Countries Classified by Continent, Income Status and Coastal Regions
In this study, World Bank socioeconomic data of 61 countries during 2009-2015 combine with a semi-systematic literature review was applied to analyze the relationship between plastic consumptions and socioeconomic levels statistically. Based on a total data volume of 5551, we found that all countries can be divided into different groups like the continent, income status, and coastal countries. It is showed that most plastics were consumed by North America, Europe, high-income countries, and coastal countries in the Pacific and the Atlantic Ocean. A potential relation occurred in plastic consumptions with different socioeco...
Source: Bulletin of Environmental Contamination and Toxicology - April 16, 2021 Category: Environmental Health Authors: Kazi Belayet Hossain Kai Chen Piao Chen Chunhui Wang Minggang Cai Source Type: research

Screening and Optimization of Zinc Removal Potential in Pseudomonas aeruginosa-HMR1 and its Plant Growth-Promoting Attributes
Bull Environ Contam Toxicol. 2021 Apr 16. doi: 10.1007/s00128-021-03232-5. Online ahead of print.ABSTRACTThe soil samples of old Zawar mine sites were sandy texture, basic, electric conductivity range from 16 to 59 dSm-1 with a high content of heavy metals of Zn, Pb, Cd, and Fe, indicating poor soil-health. Two bacterial isolates Pseudomonas aeruginosa HMR1 and P. aeruginosa HMR16 (GenBank-accession-number KJ191700 and KU174205, respectively), differed in the Phylogenetic tree based on 16S-rDNA sequences. HMR1 isolate showed the high potential of Plant growth-promoting attributes like IAA, Phosphate-solubilization, Exopoly...
Source: Bulletin of Environmental Contamination and Toxicology - April 16, 2021 Category: Environmental Health Authors: Ali Asger Bhojiya Harshada Joshi Sudhir K Upadhyay Abhishek K Srivastava Vinayak Vandan Pathak Vimal Chandra Pandey Devendra Jain Source Type: research