Key Laboratory of the Ministry of Education for Coastal Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Fujian 361102, China; State Key Lab of Urban and Regional Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Key Laboratory of the Ministry of Education for Coastal Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Fujian 361102, China; State Key Lab of Urban and Regional Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Environ Int. 2020 May;138:105621. doi: 10.1016/j.envint.2020.105621. Epub 2020 Mar 3.
Substantial perfluoroalkyl acids (PFAAs) production still occurs in China, and the consumption of aquatic products is a critical exposure pathway of PFAAs in humans. In this study, specimens of 16 freshwater and 40 marine species were collected in the river-estuary-sea environment affected by a mega fluorochemical industry park in China in 2015, and the edible tissues of these organisms were analyzed for PFAA levels. Perfluorooctanoic acid (PFOA) was the dominating contaminant with an overall contribution of more than 90%, and concentrations as high as 2161 ng/g wet weight (measured in the freshwater winkle). All species with the greatest PFOA levels were benthic. The trophic magnification factor (TMF) of PFOA was 1.10 for freshwater species and 1.28 for marine species, indicating that PFOA was slightly magnifying. Analysis of carbon source indicated that freshwater species were more benthic feeding, while marine species were more pelagic feeding. Aquatic food consumption screening values of PFOA were modified according to estimated daily intake (EDI) values, which generated recommendations for limited meal categories and the do-not-eat category. Thus, this study provides recommendations for mitigating the health risks of PFAA-contaminated aquatic food, ranging from food selection to consumption frequency and proper food processing.
在中国，大量全氟烷基酸（PFAAs）仍在生产，而食用水产品是人类接触 PFAAs 的一个关键途径。本研究于 2015 年在受中国大型氟化学工业园影响的河口水域采集了 16 种淡水和 40 种海洋物种样本，并分析了这些生物体的可食用组织中的 PFAA 水平。全氟辛酸（PFOA）是主要污染物，其总体贡献率超过 90%，最高浓度高达 2161ng/g 湿重（在淡水贻贝中检测到）。所有 PFOA 水平最高的物种都是底栖生物。PFOA 的营养级放大因子（TMF）为 1.10（淡水物种）和 1.28（海洋物种），表明 PFOA 略有放大。碳源分析表明，淡水物种更多地是底栖觅食，而海洋物种更多地是浮游觅食。根据估计的每日摄入量（EDI）值，对 PFOA 的水生食品消费筛查值进行了修正，这为有限的膳食类别和禁食类别提供了建议。因此，本研究从食物选择、食用频率和适当的食物处理等方面，为减轻受 PFAA 污染的水生食品对健康的风险提供了建议。
