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INVESTIGATION OF PERFLUOROALKYL ACIDS IN TAIHU LAKE: OCCURRENCE, TRANSPORT AND ENVIRONMENTAL RISK ASSESSMENT
Li, Y., W. Yang, and C. Yao.
IOP Conference Series: Earth and Environmental Science 218:012129(2019)
A polar organic chemical integrative sampler (POCIS) consisting of 200 mg of weak anion-exchange sorbent packed between two polyethersulfone membranes was used to quantify the concentration of PFAAs in surface water and sediment and to evaluate the environmental implications on different aquatic organisms in Taihu Lake, China. PFAAs were also actively measured in surface water and sediment samples for comparison to the passive sampler. Twelve cages were deployed containing three POCIS samplers per cage and exposed for 1, 2, 4, 7, 10, and 14 days (two for each exposure period). The concentrations of PFAAs measured by POCIS ranged from 11.79-390.77 ng/L at the sampling locations. The concentrations of PFAAs in active sediment samples ranged from 0.52-13.58 ng/L. PFOA was the most abundant compound detected with a mean concentration of 289.34 ng/L in water and 12.6 ng/g dry weight in sediments. Risk quotient results indicated that PFAAs had no risk to aquatic organisms in the Taihu Lake system. https://iopscience.iop.org/article/10.1088/1755-1315/218/1/012129/pdf
IOP Conference Series: Earth and Environmental Science 218:012129(2019)
A polar organic chemical integrative sampler (POCIS) consisting of 200 mg of weak anion-exchange sorbent packed between two polyethersulfone membranes was used to quantify the concentration of PFAAs in surface water and sediment and to evaluate the environmental implications on different aquatic organisms in Taihu Lake, China. PFAAs were also actively measured in surface water and sediment samples for comparison to the passive sampler. Twelve cages were deployed containing three POCIS samplers per cage and exposed for 1, 2, 4, 7, 10, and 14 days (two for each exposure period). The concentrations of PFAAs measured by POCIS ranged from 11.79-390.77 ng/L at the sampling locations. The concentrations of PFAAs in active sediment samples ranged from 0.52-13.58 ng/L. PFOA was the most abundant compound detected with a mean concentration of 289.34 ng/L in water and 12.6 ng/g dry weight in sediments. Risk quotient results indicated that PFAAs had no risk to aquatic organisms in the Taihu Lake system. https://iopscience.iop.org/article/10.1088/1755-1315/218/1/012129/pdf
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