%0 Journal Article %A LÜ Ming %A ZHU Youchang %A PAN Baozhu %A XU Nan %T Distribution of Per- and Polyfluoroalkyl Substances (PFASs) in Lower Reach of Yellow River, China %D 2022 %R 10.13209/j.0479-8023.2022.025 %J Acta Scientiarum Naturalium Universitatis Pekinensis %P 575-586 %V 58 %N 3 %X
Fifty PFASs were measured in water and sediment samples collected from the lower reach of Yellow River in spring and autumn to understand their distribution and ecological risk. The results indicated that the total concentrations of PFASs in water ranged from 29.83–54.44 ng/L in spring and 16.18–57.81 ng/L in autumn, while the total contents in sediment ranged from 18.12–36.16 ng/g in spring and 13.01–36.78 ng/g in autumn. Perfluoroalkyl carboxylic acids (PFCAs), perfluoroalkane sulfonic acids (PFSAs) and n:2 fluorotelomer sulfonic acids (n:2 FTSs) were the three dominant types of PFASs in both seasons, and n:2 FTSs, as emerging PFASs, were detected with high concentrations in both water and sediment. Short-chain PFCAs were the main substitutes of perfluorooctanoic acid (PFOA) in water and sediment, while hexafluoropropylene oxide dimer acid (HFPO-DA) presented a higher substitution trend to PFOA in sediment; the main substitute of perfluorooctane sulfonic acid (PFOS) in water and sediment was 6:2 FTS. The results of risk quotient analysis showed that the PFASs target compounds in water posed no ecological risks to aquatic environment. 
%U http://xbna.pku.edu.cn/EN/10.13209/j.0479-8023.2022.025