Residues, bioaccumulations and biomagnification of perfluoroalkyl acids (PFAAs) in aquatic animals from Lake Chaohu, China

Environmental Pollution
Wenxiu LiuFuliu Xu

Abstract

Residual levels of perfluoroalkyl acids (PFAAs) in seven species of aquatic animals were analyzed by liquid chromatography-mass spectrometry. The distribution, composition, bioaccumulation, and biomagnification of PFAAs and their effect factors were studied. The results showed that: 1) Wet weight concentrations of 17 PFAAs in the aquatic animals ranged from 1.77 to 38.65 ng/g, with a mean value of 12.71 ± 9.21 ng/g. PFOS was the predominant contaminant (4.57 ± 4.57 ng/g, 6.76%-46.25%), followed by PFDA (1.95 ± 1.37 ng/g, 11.68%-21.25%) and PFUdA (1.84 ± 1.21 ng/g, 9.73%-35.34%. 2) PFAA residual levels in Culter erythropterus (30.98 ± 6.65 ng/g) were the highest, followed by Hemibarbus maculatus (16.79 ± 1.88 ng/g), while the PFAA levels in Carassius auratus were the lowest (2.22 ± 0.60 ng/g). 3) Biota-water bioaccumulation factors (BAFs), biota-suspended solid accumulation factors (BSSAFs) and biota-sediment accumulation factors (BSAFs) ranged from 0.35 to 12,370.51, 7.77 to 8452.92 and 9.10 to 6984.61, respectively. Bioaccumulation by shrimp and snails was significantly affected by Kow. 4) Food web magnification factors were greater than 1, indicating that biomagnification of PFAAs occurs across trophic levels. The bioaccumula...Continue Reading

Citations

Mar 13, 2020·Environmental Toxicology and Chemistry·Sarah A AbercrombieJason T Hoverman
May 17, 2019·International Journal of Environmental Research and Public Health·Xu PanDandan Pan
Dec 2, 2020·The Science of the Total Environment·Daniele A MirandaVanessa Hatje
Apr 20, 2019·Ecotoxicology and Environmental Safety·Sarah A AbercrombieJason T Hoverman
Apr 30, 2020·Environmental Science & Technology·Tiffany N PenlandForrest W Sessions

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