State Key Laboratory in Marine Pollution, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, PR China; Research Centre for the Oceans and Human Health, Shenzhen Key Laboratory for Sustainable Use of Marine Biodiversity, City University of Hong Kong Shenzhen Research Institute Building, Shenzhen 518057, PR China.
State Key Laboratory of Marine Environmental Science, Environmental Science Research Center, Xiamen University, Xiamen 361005, China.
J Hazard Mater. 2015 Mar 21;285:389-97. doi: 10.1016/j.jhazmat.2014.10.065. Epub 2014 Dec 12.
Concentrations of 23 per- and polyfluoroalkyl substances (PFASs), including new classes of PFASs, in seawater samples were investigated for their occurrence and the interaction of the ocean currents with the distribution of PFASs in the South China Sea. This study revealed that socio-economic development was associated with the PFAS contamination in coastal regions of South China. Significant correlations between concentration of total PFASs with gross domestic product (GDP) per capita and population density were found in the areas, suggesting that the influence of intense human activities in these areas may have resulted in higher PFAS contamination to the adjacent environment. Di-substituted polyfluoroalkyl phosphate (diPAP), one of the potential replacements for PFASs, was only detected in the heavily developed region, namely Pearl River Delta (PRD). Total PFAS concentrations, ranging from 195 to 4925 pg/L, were detected at 51 sampling stations of the South China Sea. The results also confirmed that PFAS contamination in the South China Sea is strongly affected by the ocean currents. In comparison to perfluoroactane sulfonate (PFOS) concentrations measured nine years ago at the same locations, the concentrations in this study were found to be two times higher. This indicated that the use and production of perfluoroalkyl sulfonates (PFSAs) has been continuing in the region.
本研究调查了南海海水样本中 23 种全氟和多氟烷基物质（PFASs）的浓度，包括新型 PFASs，以研究其存在情况以及海流与 PFASs 分布之间的相互作用。本研究表明，社会经济发展与中国南海沿海地区的 PFAS 污染有关。在所研究的地区，总 PFAS 浓度与人均国内生产总值（GDP）和人口密度呈显著正相关，表明这些地区人类活动的强烈影响可能导致对相邻环境的更高 PFAS 污染。双取代的多氟烷基磷酸酯（diPAP）是 PFASs 的潜在替代品之一，仅在高度发达的地区，即珠江三角洲（PRD）检测到。在南海的 51 个采样站检测到 195 至 4925 pg/L 的总 PFAS 浓度。研究结果还证实，南海的 PFAS 污染受海流的强烈影响。与九年前在同一地点测量的全氟己烷磺酸（PFOS）浓度相比，本研究中的浓度高出两倍。这表明该地区仍在继续使用和生产全氟烷基磺酸盐（PFSAs）。
