Influence of microplastics on the photodegradation of perfluorooctane sulfonamide (FOSA)  

作　　者：Lingyi Meng Haoting Tian Jitao Lv YaweiWang Guibin Jiang 

机构地区：[1]State Key Laboratory of Environmental Chemistry and Ecotoxicology,Research Centre for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]School of Environment,Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences,Hangzhou 310000,China

出　　处：《Journal of Environmental Sciences》2023年第5期791-798,共8页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.21625702,22021003).

摘　　要：PFAS(per-and polyfluoroalkyl substances)are omnipresent in the environment and their transportation and transformation have attracted increased attention.Microplastics are another potential risk substances that can serve as a carrier for ubiquitous pollutants,thus affecting the presence of PFAS in the environment.In this study,the adsorption of perfluorooctane sulfonamide(FOSA)and perfluorooctanoic acid(PFOA)on four microplastics(PE,PVC,PS,and PTFE)and their effect on the photodegradation of FOSA were studied.The adsorption capacity of FOSA by PS was the highest,in similar,PS displayed the highest adsorption capacity in the presence of PFOA.Different effects of pH and salinity on the adsorption of FOSA and PFOA were observed among different microplastics indicating inconsistent interaction mechanisms.Furthermore,FOSA could be photodegraded,with PFOA as the main product,while the presence of microplastics had a negligible effect on the degradation of this contaminant.The results indicated that microplastics could act as PFAS concentrators.Moreover,their photochemical inertiasmake the pollutants enriched onmicroplastics more resistant to degradation.

关 键 词：Microplastic Per-and polyfluoroalkyl substances (PFAS) TRANSPORTATION TRANSFORMATION 

分 类 号：X505[环境科学与工程—环境工程]