School of Geography and Tourism, Qufu Normal University, Rizhao, 276826, Shandong, China; School of History and Culture, Qufu Normal University, Qufu, 273165, Shandong, China.
School of Life Science, Qufu Normal University, Qufu, 273165, Shandong, China.
Environ Pollut. 2023 Jan 1;316(Pt 1):120460. doi: 10.1016/j.envpol.2022.120460. Epub 2022 Oct 20.
Per- and polyfluorolkyl substances (PFAS) were measured in the water and fish from 20 coastal tourist resorts in China, to investigate their sources, seasonal differences, and bioconcentration. An oxidative method with hydroxyl radicals was used to extract potential perfluoroalkyl acid (PFAA) precursors in the water of resorts. The results indicated that the total concentrations of target chemicals (i.e., ΣPFAS) in the original water were 59.4-138, 32.7-77.2, and 14.6-29.9 ng L in December, April, and August, respectively. C-C perfluorocarboxlate (PFCA) and perfluorooctane sulfonate (PFOS) accounted for 67%-92% of the ΣPFAS contents in all water samples. The PFAS concentrations in the muscles and liver of fish were 16.0-162 ng g ww and 186-1240 ng g ww, respectively. The dominant compounds were perfluorobutanoate acid (PFBA) and PFOS in the water, and perfluorooctanoic acid (PFOA) and PFOS in fish tissues. High bioconcentration were observed for PFCA (C ≥ 8) and perfluorosulfonate (PFSA, C ≥ 6). After oxidative conversion, the water exhibited a noticeable increase in the ΣPFAS value. Precursors that generated C-C PFCA were more prevalent than precursors that generated other PFCA upon oxidation. The concentration of C-based precursor was higher than that of C-based precursor in wet and dry seasons. This study is the first to apply an oxidative method to investigate PFAS pollution in the water of coastal tourist resorts. The results verified that PFAA precursors exist in the water of coastal tourist resorts, and more attention should be given to the existence of PFAA precursors and the safety of water in coastal tourist resorts.
全氟和多氟烷基物质（PFAS）在 20 个中国沿海旅游胜地的水和鱼类中进行了测量，以研究其来源、季节性差异和生物浓缩。采用羟基自由基氧化法提取旅游胜地水中潜在的全氟烷基酸（PFAA）前体。结果表明，12 月、4 月和 8 月原始水中目标化学物质（即ΣPFAS）的总浓度分别为 59.4-138、32.7-77.2 和 14.6-29.9 ng L。C-C 全氟羧酸（PFCA）和全氟辛烷磺酸（PFOS）占所有水样ΣPFAS 含量的 67%-92%。鱼肌肉和肝脏中的 PFAS 浓度分别为 16.0-162 ng g ww 和 186-1240 ng g ww。水中的优势化合物为全氟丁烷酸（PFBA）和 PFOS，鱼组织中的优势化合物为全氟辛酸（PFOA）和 PFOS。PFCA（C≥8）和全氟磺酸盐（PFSA，C≥6）表现出高生物浓缩性。氧化后，水中ΣPFAS 值明显增加。氧化后，生成 C-C PFCA 的前体比生成其他 PFCA 的前体更为普遍。湿季和干季 C 基前体的浓度均高于 C 基前体。本研究首次应用氧化法研究沿海旅游胜地水中的 PFAS 污染。结果证实，沿海旅游胜地水中存在 PFAA 前体，应更加关注沿海旅游胜地水中 PFAA 前体的存在及其水质安全。
