中文关键词滨海带城市化区域全氟化合物(PFASs)空间特征风险评估 英文关键词coastal regionrapid urbanizationperfluoroalkyl substances(PFASs)spatial distributionrisk assessment

作者	单位	E-mail
杨洪法	云南大学生态学与环境学院, 昆明 650091 中国科学院生态环境研究中心城市与区域生态国家重点实验室, 北京 100085	f1108108@126.com
史斌	中国科学院生态环境研究中心城市与区域生态国家重点实验室, 北京 100085	binshi@rcees.ac.cn
周云桥	中国科学院生态环境研究中心城市与区域生态国家重点实验室, 北京 100085 中国科学院大学, 北京 100049
杨璐	中国科学院生态环境研究中心城市与区域生态国家重点实验室, 北京 100085 中国科学院大学, 北京 100049
孟晶	中国科学院生态环境研究中心城市与区域生态国家重点实验室, 北京 100085
陈礼强	云南大学国际河流与生态安全研究院, 昆明 650091	chenlq@ynu.edu.cn
王铁宇	中国科学院生态环境研究中心城市与区域生态国家重点实验室, 北京 100085

中文摘要 本研究以全氟化合物（perfluoroalkyl substances，PFASs）为研究对象，选择人类活动强度大的中、韩滨海城市化地区为研究区域，采集了126份水体及125份沉积物样品，通过固相萃取和高效液相色谱-串联质谱（HPLC/MS-MS）的方法，分析了水体及沉积物中的15种PFASs.结果表明，PFASs在水体和沉积物中全部检出，水体中PFASs总质量浓度范围为6.75~20982 ng·L^-1，沉积物中PFASs含量（以干重计）范围为0.229~53.8 ng·g^-1.区域对比发现，中国滨海城市化地区水体和沉积物中PFASs含量相对较高以长链PFOA为主，而韩国水体中则以短链PFBA和PFPeA为主，沉积物中以PFOS、PFBA和PFOA为主.PFASs在水体和沉积物中的分配系数与沉积物中有机碳的含量、PFASs碳链长度有密切关联，15种化合物中有9种化合物的分配系数与有机碳含量存在显著相关性（r>0.21，P<0.05），随着碳链长度的增加分配系数也平稳增加.生态风险分析结果表明，中、韩滨海城市化地区水体和沉积物中PFASs含量整体较低，尚处于较低风险水平，但存在严重局部污染问题，应当重视其对人体造成的潜在健康风险. 英文摘要 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^-1 to 20982 ng·L^-1 and from 0.229 ng·g^-1 to 53.8 ng·g^-1 (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 (r>0.21, P<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.

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