Statistical Survey of Persistent Organic Pollutants: Risk Estimations to Humans and Wildlife through Consumption of Fish from U.S. Rivers
| Autor: | John B. Wathen, Anthony R. Olsen, James M. Lazorchak, Thomas M. Kincaid, Angela L. Batt |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010504 meteorology & atmospheric sciences
Population Wildlife Chlordane 010501 environmental sciences 01 natural sciences Article chemistry.chemical_compound Rivers Environmental monitoring Hydrocarbons Chlorinated Animals Humans Environmental Chemistry education Statistical survey 0105 earth and related environmental sciences Pollutant education.field_of_study Fishes General Chemistry Contamination Polychlorinated Biphenyls chemistry Environmental chemistry Environmental science Fish Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Environ Sci Technol |
| ISSN: | 1520-5851 0013-936X |
| DOI: | 10.1021/acs.est.6b05162 |
| Popis: | U.S. EPA conducted a national statistical survey of fish tissue contamination at 540 river sites (representing 82 954 river km) in 2008–2009, and analyzed samples for 50 persistent organic pollutants (POPs), including 21 PCB congeners, 8 PBDE congeners, and 21 organochlorine pesticides. The survey results were used to provide national estimates of contamination for these POPs. PCBs were the most abundant, being measured in 93.5% of samples. Summed concentrations of the 21 PCB congeners had a national weighted mean of 32.7 μg/kg and a maximum concentration of 857 μg/kg, and exceeded the human health cancer screening value of 12 μg/kg in 48% of the national sampled population of river km, and in 70% of the urban sampled population. PBDEs (92.0%), chlordane (88.5%) and DDT (98.7%) were also detected frequently, although at lower concentrations. Results were examined by subpopulations of rivers, including urban or nonurban and three defined ecoregions. PCBs, PBDEs, and DDT occur at significantly higher concentrations in fish from urban rivers versus nonurban; however, the distribution varied more among the ecoregions. Wildlife screening values previously published for bird and mammalian species were converted from whole fish to fillet screening values, and used to estimate risk for wildlife through fish consumption. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|