Yang Hong-Fa, Shi Bin, Zhou Yun-Qiao, Yang Lu, Meng Jing, Chen Li-Qiang, Wang Tie-Yu
School of Ecology and Environmental Science, Yunnan University, Kunming 650091, China.
State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Huan Jing Ke Xue. 2020 Apr 8;41(4):1607-1618. doi: 10.13227/j.hjkx.201910153.
This study concentrated on the 15 perfluoroalkyl substances (PFASs) in the coastal areas of China and South Korea, an urbanized area with intensive human activities. In total, 126 water samples and 125 sediment samples were collected and determined by HPLC-MS/MS. Fifteen PFASs were detected at least once in all the sites. The total concentrations of PFASs in water and sediment samples ranged from 6.75 ng·L to 20982 ng·L and from 0.229 ng·g to 53.8 ng·g (dw), respectively. The concentrations of PFASs in waters and sediments were relatively high in China, and PFOA was the predominant PFAS. In contrast, short chain compounds such as PFBA and PFPeA played a major role in water, and PFOS, PFBA, and PFOA dominated the sediment samples in South Korea. The partition coefficients of PFASs were closely related to the fraction of organic carbon in the sediment and the carbon chain length of PFASs. Among the 15 compounds, the partition coefficients of 9 were significantly correlated with the fraction of organic carbon (>0.21, <0.05), and the partition coefficient steadily increased with the increase of the carbon chain length. The results of ecological risk assessment suggested that the coastal urbanized areas of China and South Korea are still at a low risk. However, some specific areas also showed PFAS pollution. More attention should be paid to the potential health risks.
本研究聚焦于中国和韩国沿海地区这一人类活动密集的城市化区域中的15种全氟烷基物质（PFASs）。总共采集了126份水样和125份沉积物样本，并通过高效液相色谱 - 串联质谱法（HPLC-MS/MS）进行测定。在所有采样点均至少检测到了15种PFASs中的一种。水样和沉积物样本中PFASs的总浓度范围分别为6.75纳克/升至20982纳克/升以及0.229纳克/克至53.8纳克/克（干重）。中国水域和沉积物中PFASs的浓度相对较高，且全氟辛酸（PFOA）是主要的PFAS。相比之下，短链化合物如全氟丁酸（PFBA）和全氟戊酸（PFPeA）在水中起主要作用，而全氟辛烷磺酸（PFOS）、PFBA和PFOA在韩国的沉积物样本中占主导地位。PFASs的分配系数与沉积物中有机碳的含量以及PFASs的碳链长度密切相关。在这15种化合物中，9种的分配系数与有机碳含量显著相关（>0.21，<0.05），且分配系数随碳链长度的增加而稳步上升。生态风险评估结果表明，中国和韩国的沿海城市化地区仍处于低风险水平。然而，一些特定区域也显示出PFAS污染。应更加关注其潜在的健康风险。
