全氟化合物在北江顺德水道表层水、悬浮颗粒物以及沉积物中的污染特征及风险评估  

Pollution characteristics and risk assessment of perfluoroalkyl substances in surface water,suspended particulate matter,and sediment in the Shunde Waterway of the Beijiang River

作　　者：乔磊 张汝频 杨余[1] 冉勇[1] QIAO Lei;ZHANG Rupin;YANG Yu;RAN Yong(State Key Laboratory of Organic Geochemistry/Guangdong Key Laboratory of Environment and Resources,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,Guangdong,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院广州地球化学研究所,有机地球化学国家重点实验室/广东省环境资源利用与保护重点实验室,广东广州510640 [2]中国科学院大学,北京100049

出　　处：《地球化学》2022年第6期617-624,共8页Geochimica

基　　金：国家自然科学基金和广东省的重点联合项目(U1701244);国家自然科学基金项目(41473103);广东省科学技术计划基金项目(2017B030314057);国家重点实验室专项基金会项目(SKLOGA201603B)联合资助。

摘　　要：在北江顺德水道采集表层水、悬浮颗粒物(SPM)和沉积物样品,分析其中全氟化合物(PFASs)的残留水平和污染特征。结果表明,溶解相、悬浮颗粒相以及沉积物中∑PFASs的浓度范围分别为135~192、96.7~185、0.794~2.26ng/g。溶解相以全氟辛酸(PFOA)为主,贡献率为91.7%~95.0%;SPM以PFOA和全氟癸酸(PFDA)为主;沉积物以PFOA和全氟辛烷磺酸(PFOS)为主。中短链PFASs更多存在于溶解相中随着水流迁移,长链PFASs则更易与SPM以及沉积物结合。与其他河流相比,北江顺德水道中PFASs处于中等污染水平。周边的电器工厂和货轮码头可能是区域水环境PFASs的重要来源。此外,北江顺德水道暂无水生生态风险,但按照较严格的饮用水PFASs健康参考值,该水域作为饮用水源地存在一定程度的健康风险。To investigate the residual levels and pollution characteristics of 11 perfluoroalkyl substances(PFASs),water, suspended particulate matter(SPM), and sediment samples were collected from the Beijiang River(Shunde section).The results showed that the concentration ranges of ∑PFASs in dissolved phase, SPM, and sediment were 135–192 ng/L,96.7–185 ng/g, and 0.794–2.26 ng/g, respectively. Perfluorooctanoic acid(PFOA) was the most frequently detected compound in the dissolved phases, and its contribution ratio was between 91.7% and 95.0%. SPM was dominated by PFOA and perfluorodecanoic acid(PFDA), while the sediments were dominated by PFOA and perfluorooctanesulfonic acid(PFOS). Short-and medium-chain PFASs are more abundant in the dissolved phase and can migrate with water flow, while long-chain PFASs bind more easily to SPM and sediments. Compared with other studies, PFASs in the Shunde Waterway of the Beijiang River had a moderate pollution level. The surrounding electrical factories and cargo terminals may be important sources of PFASs in this region. Additionally, the Shunde Waterway of the Beijiang River shows no aquatic ecological risk. However, according to the stricter drinking water health advisories, PFASs in the Shunde Waterway of the Beijiang River, a source of drinking water, may cause potential health problems.

关 键 词：全氟化合物 北江顺德水道 表层水 悬浮颗粒物 沉积物 污染特征 危害评估 

分 类 号：X142[环境科学与工程—环境科学] X522