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Strategy for Remediation of Polychlorinated Biphenyls-Contaminated Soil Through Redox Management Based on Electronegativity of the Contaminants
In this study, the use of methanol as electron donor with cow dung as the general microbial inoculum resulted in high specific rate of degradation (0.0542-0.0637 /day) for high-chlorinated biphenyls. The % removal of PCBs ranged between 67.7 and 71.7%. It may be the first study on the application of methanol as a cheap electron donor for PCBs biodegradation without bioaugmentation with specifically selected microorganisms.PMID:38151599 | DOI:10.1007/s00128-023-03847-w (Source: Bulletin of Environmental Contamination and Toxicology)
Source: Bulletin of Environmental Contamination and Toxicology - December 27, 2023 Category: Environmental Health Authors: S Subramani Ankita Bagde Aniket Balke Tapan Chakrabarti Amit Bafana Source Type: research

Survival of Nutrient-Starved Diatoms Under Ocean Acidification: Perspective from Nutrient Sensing, Cadmium Detection, and Nitrogen Assimilation
This study aimed to explore how OA affects the diatom dynamics under nutrient-poor conditions and the ability of diatoms to perceive nutrients (nitrogen, phosphorus, silicon, and trace metals) and cadmium (Cd) stimuli and assimilate nitrogen when receiving nutrients or Cd supplementation. Our study observed that diatom population grown under OA condition declined faster than those grown under ambient condition. Ocean acidification greatly lower intracellular Ca2+ concentration in diatom cells. Intracellular Ca2+ burst was involved in phosphorus accumulation but not in nitrogen, silicon, essential metals, and cadmium uptake...
Source: Bulletin of Environmental Contamination and Toxicology - December 27, 2023 Category: Environmental Health Authors: Zhen Zhang Ke Pan Hongbin Liu Source Type: research

Ecotoxicology of Trace Elements in European Oyster (Ostrea edulis), Seawater, and Sedimentsacross Boston Harbor, Massachusetts,USA
Bull Environ Contam Toxicol. 2023 Dec 25;112(1):20. doi: 10.1007/s00128-023-03844-z.ABSTRACTEuropean oyster (Ostrea edulis) can be used for biological monitoring of water and sediment quality and serve as a conduit of trace elements to humans via consumption. Trace element concentrations in seawater, sediment, O. edulis edible tissues and shells from Boston Harbor were studied and found to be elevated relative to comparative studies in native ecosystems in the Adriatic Sea and Bay of Biscay. Average edible oyster tissues concentrations (mg/kg) were: arsenic 6, cadmium 1.7, cobalt 3.1, chromium 1.9, copper 153, mercury 0.26...
Source: Bulletin of Environmental Contamination and Toxicology - December 25, 2023 Category: Environmental Health Authors: Aidan J Buck Katrina A Zarrella-Smith Adrian Jordaan Justin B Richardson Source Type: research

Biodegradation and Detoxification of Low-Density Polyethylene (LDPE) by Stenotrophomonas sp. and Alcaligenaceae bacterium
Bull Environ Contam Toxicol. 2023 Dec 24;112(1):19. doi: 10.1007/s00128-023-03836-z.ABSTRACTEvery year, human activities introduce large amounts of synthetic plastics into the environment. Decomposition of the plastic derivatives is very difficult and time consuming, so it is essential to eliminate these pollutants using different methods. Bioremediation, is suitable option, because of the low cost and environmentally safe. In this research, degradation of low-density polyethylene (LDPE) was investigated by two strains, isolated from Hamadan province (Iran) landfill soil. After identification by 16sr DNA primers, their abi...
Source: Bulletin of Environmental Contamination and Toxicology - December 24, 2023 Category: Environmental Health Authors: Hamide Mazaheri Sonbol Nazeri Source Type: research

Persistent Organic Pollutants in Whale Shark (Rhincodon typus) Skin Biopsies from Bah ía de Los Ángeles, Mexico
This study is the first report of PAH levels in R. typus for the Gulf of California and Mexico.PMID:38141110 | PMC:PMC10748776 | DOI:10.1007/s00128-023-03841-2 (Source: Bulletin of Environmental Contamination and Toxicology)
Source: Bulletin of Environmental Contamination and Toxicology - December 23, 2023 Category: Environmental Health Authors: Stephanie Itzel Villag ómez-Vélez Elsa Nore ña-Barroso Felipe Galv án-Magaña Rogelio Gonz ález-Armas Gabriela Rodr íguez-Fuentes Ana Judith Marmolejo-Rodr íguez Source Type: research

Persistent Organic Pollutants in Whale Shark (Rhincodon typus) Skin Biopsies from Bah ía de Los Ángeles, Mexico
This study is the first report of PAH levels in R. typus for the Gulf of California and Mexico.PMID:38141110 | DOI:10.1007/s00128-023-03841-2 (Source: Bulletin of Environmental Contamination and Toxicology)
Source: Bulletin of Environmental Contamination and Toxicology - December 23, 2023 Category: Environmental Health Authors: Stephanie Itzel Villag ómez-Vélez Elsa Nore ña-Barroso Felipe Galv án-Magaña Rogelio Gonz ález-Armas Gabriela Rodr íguez-Fuentes Ana Judith Marmolejo-Rodr íguez Source Type: research

Pressmud Subdue Phytoremediation Indices in Lead-Contaminated Soils: A Human Health Perspective
In this study, graded levels of pressmud (0, 2.5, 5, 10 g/kg) were applied on lead imposed soil with different contamination levels (0, 100, 150, 300 mg/kg) and metal dynamics was studied in spinach crop. Experimental results showed that the addition of pressmud upto 10 mg/kg had decreased different phytoremediation indices in spinach crop. Whereas, increasing Pb level enhanced the indices' values, indicating accumulation of significant amount of Pb in spinach biomass. However, application of pressmud (upto 10 mg/kg) reduced the bioconcentration factor (BCF) from 0.182 to 0.136, transfer factor (TF) from 0.221 to 0.191, tr...
Source: Bulletin of Environmental Contamination and Toxicology - December 21, 2023 Category: Environmental Health Authors: M L Dotaniya M C Nagar Amita Sharma C K Dotaniya R K Doutaniya Source Type: research

Effects of Lead (Pb) from Smelter Operations in an Urban Terrestrial Food Chain at a Colorado Superfund Site
Bull Environ Contam Toxicol. 2023 Dec 21;112(1):17. doi: 10.1007/s00128-023-03846-x.ABSTRACTLead (Pb) is ubiquitous in urban environments, and it is a risk factor for wildlife. But wildlife are particularly at risk for exposure near smelters in urban areas where higher than safe Pb levels in the soil have the potential to transfer to the food chain. Therefore, we investigated whether wildlife are at risk of Pb exposure and differences in Pb bioaccumulation in trophic levels at a Superfund site in an urban area of Colorado. We sampled soil, vegetation, arthropods, and birds at four sites: two contaminated sites (one at the ...
Source: Bulletin of Environmental Contamination and Toxicology - December 21, 2023 Category: Environmental Health Authors: Elizabeth K Peterson James Carsella Claire W Varian-Ramos Teyah Schiffer Sean Kyle Staples Moussa Diawara Source Type: research