Biodilution of Organic Species of Arsenic in Freshwater Food Webs DOI Creative Commons
Adam T. Lepage, Gretchen L. Lescord, Alan Lock

et al.

Environmental Toxicology and Chemistry, Journal Year: 2023, Volume and Issue: 43(4), P. 833 - 846

Published: Dec. 26, 2023

Abstract Arsenic can accumulate in freshwater biota, sometimes reaching potentially harmful levels. However, the toxicity of arsenic strongly depends on which species are present. Although organic considered less than inorganic ones, they have not been extensively studied environments, and drivers variation speciation among sites taxa remain unclear. We assessed concentrations two species, arsenobetaine (AsB) dimethylarsinic acid (DMA), fish invertebrates from three lakes near Sudbury, Ontario, Canada—a region with widespread mining impacts. Both AsB DMA were detected most samples ( n = 212), varying across a wide range (<0.001–30.144 <0.006–5.262 mg/kg dry wt, respectively). The lake severe impacts typically had highest (designated by square brackets []) DMA. In contrast, percentage total made up (%AsB) (%DMA) did vary significantly between lakes. muscle varied size, selenium concentrations, trophic elevation (inferred nitrogen stable isotope ratios δ 15 N), but relationships dietary carbon source 13 C) more varied. Within all food webs, [AsB] [DMA] underwent biodilution, decreasing (i.e., N). aforementioned factors explained some speciation, there remains considerable unexplained variation. Further studies biota should target wider diversity to better understand speciation. addition, research emphasizing other is needed improve environmental human health risk assessments. Environ Toxicol Chem 2024;43:833–846. © 2024 Authors. Environmental Toxicology Chemistry published Wiley Periodicals LLC behalf SETAC.

Language: Английский

Source-oriented health risk assessment of groundwater nitrate by using EMMTE coupled with HHRA model DOI
Huanhuan Shi, Yao Du,

Yaojin Xiong

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 934, P. 173283 - 173283

Published: May 15, 2024

Language: Английский

Citations

12
Arsenic Speciation, an Evaluation of Health Risk Due to the Consumption of Two Fishes from Coastal Marine Areas of the Southwestern Atlantic Ocean (SWAO) DOI
Sabrina Ignacio,

Jonatan Schlotthauer,

Mirna Sigrist

et al.

Archives of Environmental Contamination and Toxicology, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Language: Английский

Citations

0
Diazotrophic community difference between specialists and generalists in response to arsenic and antimony contaminations DOI

Yan Wang,

Yiqun Xiong, Yongbin Li

et al.

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121676 - 121676

Published: April 1, 2025

Language: Английский

Citations

0
A review of arsenic speciation in freshwater fish: Perspectives on monitoring approaches and analytical methods DOI
Adam T. Lepage, Brian Laird, Kelly Skinner

et al.

Environmental Reviews, Journal Year: 2024, Volume and Issue: 32(4), P. 539 - 556

Published: May 22, 2024

Arsenic accumulation in fish poses concerns for subsistence and recreational fishers worldwide. However, the toxicity of arsenic to consumers strongly depends on chemical forms, or species, present. Risk assessments often rely total concentrations ([As]), adjusting assumed small percentages most harmful inorganic species. While studies speciation marine are widespread, commonly report less toxic arsenobetaine (AsB) as dominant form, fewer have been conducted freshwater fish, where may be more variable. To assess these findings, we a systematic literature review using Covidence © management software. From over 1100 screened studies, 41 were selected inclusion based predefined criteria. These reported highly variable patterns calling into question assumption that AsB is form Sites with suspected known contamination issues prominent, >50% data reviewed originating from contaminated river lake, but effect was Although other organic forms typically dominated, some (6/41; 15%) identified elevated (>1 mg/kg dry wt.), corresponding 20% arsenic. Furthermore, results accounted proportion [As] than 50%. Assuming appears poor approximation cannot applied all fish. Based this considerable variability, recommend direct measurement species whenever possible, especially when above relevant guidelines (e.g., 0.1–2 wet wt.). We also future works communicate their detail, including complete description quality assurance control protocols, improve potential meta-analyses. Additional work needed characterize various accurately evaluate environmental human health risks associated

Language: Английский

Citations

2
Biodilution of Organic Species of Arsenic in Freshwater Food Webs DOI Creative Commons
Adam T. Lepage, Gretchen L. Lescord, Alan Lock

et al.

Environmental Toxicology and Chemistry, Journal Year: 2023, Volume and Issue: 43(4), P. 833 - 846

Published: Dec. 26, 2023

Abstract Arsenic can accumulate in freshwater biota, sometimes reaching potentially harmful levels. However, the toxicity of arsenic strongly depends on which species are present. Although organic considered less than inorganic ones, they have not been extensively studied environments, and drivers variation speciation among sites taxa remain unclear. We assessed concentrations two species, arsenobetaine (AsB) dimethylarsinic acid (DMA), fish invertebrates from three lakes near Sudbury, Ontario, Canada—a region with widespread mining impacts. Both AsB DMA were detected most samples ( n = 212), varying across a wide range (<0.001–30.144 <0.006–5.262 mg/kg dry wt, respectively). The lake severe impacts typically had highest (designated by square brackets []) DMA. In contrast, percentage total made up (%AsB) (%DMA) did vary significantly between lakes. muscle varied size, selenium concentrations, trophic elevation (inferred nitrogen stable isotope ratios δ 15 N), but relationships dietary carbon source 13 C) more varied. Within all food webs, [AsB] [DMA] underwent biodilution, decreasing (i.e., N). aforementioned factors explained some speciation, there remains considerable unexplained variation. Further studies biota should target wider diversity to better understand speciation. addition, research emphasizing other is needed improve environmental human health risk assessments. Environ Toxicol Chem 2024;43:833–846. © 2024 Authors. Environmental Toxicology Chemistry published Wiley Periodicals LLC behalf SETAC.

Language: Английский

Citations

5