摘要
全氟烷基酸(perfluoroalkyl acids,PFAAs)是一类持久性有机污染物并且在水体中被普遍检出.本文采集了中国东南13条主要河流52份水样并分析了17种PFAAs的浓度,采用因子分析、相关分析和主成分分析等方法分别探究了表层水中PFAAs的赋存特征、入海通量、污染来源及其对流域水生生物的生态风险和对人体的健康风险.研究结果表明该流域∑_(17)PFAAs的浓度范围是0.90-231.52 ng·L^(−1),平均浓度为46.82 ng·L^(−1).PFAAs的主要污染来源是工业源,排放估算为7.12 t·a^(−1).生态风险和人体健康风险评价结果表明东南主要河流全氟烷基酸的整体风险较低,但钱塘江、闽江等部分河段PFOA和PFOS的生态风险熵大于1,部分河段具有潜在的生态风险,可能对水生生物产生不利影响.此外,钱塘江部分河段饮水健康风险熵大于1,可能对人群健康产生潜在风险.
Perfluoroalkyl acids(PFAAs)are a class of persistent organic pollutants,and ubiquitous in aquatic environment.In this study,the concentrations of 17 PFAAs were analyzed in 52 surface water samples of 13 major rivers in southeast China.Factor analysis,correlation analysis,principle component analysis and other methods were used to identify the occurrence,mass flux and source of PFAAs,their ecological risk to aquatic organisms and the potential health risk to human.The results showed that the concentration range of Σ_(17)PFAAs was 0.90-231.52 ng·L^(−1),with an average value of 46.82 ng·L^(−1).The main source of PFAAs was the industrial source,and the emission load was estimated to be 7.12 t·a^(−1).The ecological risk and human health risk assessment results showed that the overall risks of PFAAs in the major rivers of the southeast China were relatively low.However,the ecological risk index of PFOA and PFOS in some reaches of Qiantang River and Minjiang River was greater than 1,and the potential ecological risk in these reaches was relatively high,which might pose adversely affect on aquatic organism.In addition,the human health risk index in some sections of the Qiantang River was more than 1,indicating the existing potential health risk.
作者
秦文友
周云桥
张梦
王佩
刘敏超
史雅娟
吕永龙
QIN Wenyou;ZHOU Yunqiao;ZHANG Meng;WANG Pei;LIU Minchao;SHI Yajuan;LV Yonglong(School of Biotechnology and Health Sciences,Wuyi University,Jiangmen,529020,China;State Key Laboratory of Urban and Regional Ecology,Research Centre for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing,100085,China)
出处
《环境化学》
CAS
CSCD
北大核心
2021年第6期1749-1762,共14页
Environmental Chemistry
基金
国家重点研发计划项目(2017YFC0505704,2018YFC1801103,2019YFC1407803)资助.
关键词
全氟烷基酸
排放通量
源解析
风险评价
perfluoroalkyl acids
mass flux
pollution source
risk assessment
