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Community Structure and Water Quality Assessment of Benthic Macroinvertebrates in Hongze Lake
This study investigated the species, density, biomass and physicochemical factors of benthic macroinvertebrates in Hongze Lake from 2016 to 2020. Redundancy analysis (RDA) was used to analyze the relationship between physicochemical parameters and the community structure of macroinvertebrates. Macroinvertebrate-based indices were used to evaluate the water quality conditions in Hongze Lake. The results showed that a total of 50 benthic species (10 annelids, 21 arthropods and 19 mollusks) were collected. The community structure of benthic macroinvertebrates varied in time and space. The dominant species were Limnodrilus hof...
Source: Bulletin of Environmental Contamination and Toxicology - April 9, 2024 Category: Environmental Health Authors: Lixiao Ni Lin Zhou Amar Ali Adam Hamad Chu Xu Wenlu Sang Cunhao Du Yun Nie Haoyue Li Jiahui Shi Shiyin Li Source Type: research

Does livestock-Manure-Derived Biochar Suitable for the Stabilization of Cadmium and Zinc in Contaminated Soil?
Bull Environ Contam Toxicol. 2024 Apr 2;112(4):57. doi: 10.1007/s00128-024-03881-2.ABSTRACTBoth livestock-manure and livestock-manure-derived biochar have been used to remediate heavy metal-contaminated soil. However, direct comparisons of the heavy metal stabilization efficiency of livestock-manure and EQC-manure-biochar (derived from an equal quantity of corresponding livestock-manure) are limited. In the present study, the effect of livestock-manures and EQC-manure-biochars on soil properties and heavy metal bioavailability and leachability were compared using two contrasting soils (Ferralsols and Fluvisols). The result...
Source: Bulletin of Environmental Contamination and Toxicology - April 2, 2024 Category: Environmental Health Authors: Zhiqiang Jiao Shiji Ge Ming Chen Paramsothy Jeyakumar Hailong Wang Xiaojun Xu Yangyang Wang Source Type: research

Quantification of Major Inorganic Contaminants in a Mediterranean Coastal Lagoon with a Large Dystrophic Crisis
Bull Environ Contam Toxicol. 2024 Apr 2;112(4):55. doi: 10.1007/s00128-024-03886-x.ABSTRACTIn August 2021, the Mar Menor, a saltwater lagoon located in the Region of Murcia (Spain), suffered a tragic environmental episode of dystrophic crisis and anoxia. The appearance of numerous dead fish in different areas of the lagoon over the course of days put all the authorities and the population of the area on alert. This paper shows a case study of what happened in the lagoon in terms of the presence of the most common inorganic pollutants. Measurements of the concentration of nitrogen species, phosphates and main heavy metals w...
Source: Bulletin of Environmental Contamination and Toxicology - April 2, 2024 Category: Environmental Health Authors: M C Garc ía-Onsurbe M Caravaca A Soto-Meca Y Vicente-Mart ínez Source Type: research

Exposure Assessment of Pesticides in Surface Waters of Ontario, Canada Reveals Low Probability of Exceeding Acute Regulatory Thresholds
The objectives of this study were to: (1) characterize the exposure of aquatic ecosystems in Southern Ontario, Canada to pesticides between 2002 and 2016 by constructing environmental exposure distributions (EEDs), including censored data; and (2) predict the probability of exceeding acute regulatory guidelines. Surface water samples were collected over a 15-year period by Environment and Climate Change Canada. The dataset contained 167 compounds, sampled across 114 sites, with a total of 2,213 samples. There were 67,920 total observations of which 55,058 were non-detects (81%), and 12,862 detects (19%). The most commonly ...
Source: Bulletin of Environmental Contamination and Toxicology - April 2, 2024 Category: Environmental Health Authors: Danielle Desrochers Ryan S Prosser Mark L Hanson Jose Luis Rodr íguez-Gil Source Type: research

Evaluation Health Risks and Sorption of Hexavalent Chromium (Cr(VI) by Biochar and Iron Doped Zinc Oxide Modified Biochar (Fe-ZnO@BC) Using Trifolium: A Green Synthesis Technique
Bull Environ Contam Toxicol. 2024 Apr 2;112(4):54. doi: 10.1007/s00128-024-03880-3.ABSTRACTContamination of aquatic and terrestrial environment with hexavalent chromium Cr(VI) is one of the major hazards worldwide due its carcinogenicity, persistency and immobility. Different research techniques have been adopted for Cr(VI) remediation present in terrestrial and aquatic media, while adsorption being the most advance, low cost, environmentally friendly and common method. The present study discussed the mechanisms of Parthenium hysterophorus derived biochar, iron-doped zinc oxide nanoparticles (nFe-ZnO) and Fe-ZnO modified b...
Source: Bulletin of Environmental Contamination and Toxicology - April 2, 2024 Category: Environmental Health Authors: Shah Jehan Seema A Khattak Muhammad Waqas Sardar Khan Liaqat Ali Source Type: research

Bioavailability and Toxicity of nano Copper Oxide to Pakchoi (Brassica Campestris L.) as Compared with bulk Copper Oxide and Ionic Copper
In this study, two nCuO with different shapes, namely spherical nCuO (CuO NPs) and tubular nCuO (CuO NTs), were selected to investigate their bioavailability and toxicity to pakchoi in two soils with different properties. At the meantime, CuO bulk particles (CuO BPs) and Cu(NO3)2 were used for comparison. Results showed that all the Cu treatments increased the DTPA extractable (DTPA-Cu) concentrations in GD soil (acidic) more than in HN soil (alkaline). The DTPA-Cu concentrations increased in the order of Cu(NO3)2 ≈ CuO NPs > CuO BPs ≈ CuO NTs in GD soil and Cu(NO3)2 > CuO NPs > CuO BPs ≈ CuO NTs in HN soil....
Source: Bulletin of Environmental Contamination and Toxicology - April 2, 2024 Category: Environmental Health Authors: Yuqing Zhang Helian Li Yanhua Qiu Yinghao Liu Source Type: research

Does the Symbiotic Relationship Between Hydra Viridissima and Photoautotrophic Alga Provide an Evolutionary Advantage in Protecting DNA against Damage by the Cytotoxic or Genotoxic Mode of Action of Environmental Stressors?
Bull Environ Contam Toxicol. 2024 Apr 2;112(4):56. doi: 10.1007/s00128-024-03884-z.ABSTRACTThe aim of this paper was to evaluate whether symbiotic cooperation between green hydra (Hydra viridissima) and photoautotrophic alga gives higher resistance of the preservation of DNA integrity compared to brown hydra (Hydra oligactis). Norflurazon concentrations were 0.061 or 0.61 mg/L and UV-B light 254 nm, 0.023mWcm- 2 applied separately or simultaneously. By alkaline comet assay primary DNA damage was assessed and cytotoxicity by fluorescent staining. Norflurazon at 0.61 mg L- 1 significantly increased DNA damage in brown hydras...
Source: Bulletin of Environmental Contamination and Toxicology - April 2, 2024 Category: Environmental Health Authors: Davor Želježić Goran Kova čević Ana Matijevi ć Petra Kora ć Katarina Caput Mihali ć Source Type: research