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EVALUATION OF LEGACY AND EMERGING ORGANIC CHEMICALS USING PASSIVE SAMPLING DEVICES ON THE NORTH BRANCH AU SABLE RIVER NEAR LOVELLS, MICHIGAN, JUNE 2018
Brennan, A.K. and D.A. Alvarez, USGS Scientific Investigations Report 2020-5002, 32 pp, 2020
Passive sampling was conducted on the North Branch Au Sable River to assess if organic chemical concentrations were present in quantities harmful to aquatic species and establish current baseline concentrations of organic chemicals. Semi-permeable membrane devices and polar organic chemical integrative passive samplers were used to collect information on the concentration, occurrence, transport, and fate of organic chemicals. The chemical classes investigated included pesticides (both legacy and current use), PCBs, polybrominated diphenyl ethers, and PAHs. The samplers were deployed at four locations along the river in June 2018 for a total of 28 days. Though organic chemical concentrations were below almost all water-quality benchmarks, they may still pose a risk to aquatic organisms and throughout the trophic hierarchy because of low-dose additive and synergistic mixture effects, transgenerational effects, and a lack of established water-quality benchmarks for many organic chemicals. https://pubs.usgs.gov/sir/2020/5002/sir20205002.pdf
Passive sampling was conducted on the North Branch Au Sable River to assess if organic chemical concentrations were present in quantities harmful to aquatic species and establish current baseline concentrations of organic chemicals. Semi-permeable membrane devices and polar organic chemical integrative passive samplers were used to collect information on the concentration, occurrence, transport, and fate of organic chemicals. The chemical classes investigated included pesticides (both legacy and current use), PCBs, polybrominated diphenyl ethers, and PAHs. The samplers were deployed at four locations along the river in June 2018 for a total of 28 days. Though organic chemical concentrations were below almost all water-quality benchmarks, they may still pose a risk to aquatic organisms and throughout the trophic hierarchy because of low-dose additive and synergistic mixture effects, transgenerational effects, and a lack of established water-quality benchmarks for many organic chemicals. https://pubs.usgs.gov/sir/2020/5002/sir20205002.pdf
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