文献类型：期刊文献

英文题名：Occurrence, distribution, and input pathways of per- and polyfluoroalkyl substances in soils near different sources in Shanghai

作者：Zhu, Qinghe[1,2];Qian, Jiahao[2,3];Huang, Shenfa[2];Li, Qingqing[2];Guo, Lin[2];Zeng, Jun[4];Zhang, Wei[3];Cao, Xinde[1];Yang, Jie[2,5]

机构：[1]Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China;[2]Shanghai Acad Environm Sci, State Environm Protect Engn Ctr Urban Soil Contami, Shanghai 200233, Peoples R China;[3]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China;[4]Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China;[5]Shanghai Acad Environm Sci, Shanghai 200233, Peoples R China

年份：2022

卷号：308

外文期刊名：ENVIRONMENTAL POLLUTION

收录：;EI(收录号：20222812338495);WOS:【SCI-EXPANDED(收录号:WOS:000822715000003)】；

基金：Acknowledgements We thank Dr. Liu Jie for helping create the sampling map using Arcgis software. This work was supported by the Program of Shanghai Academic/Technology Research Leader under the Science and Tech-nology Innovation Action Plan (19XD1434900) , the National Natural Science Foundation of China (32061133001) , and the Youth Innovative Funding of the Shanghai Academy of Environmental Sciences (CX2021140324) .

语种：英文

外文关键词：Per; and polyfluoroalkyl substances; Soil; Sources; Distribution pattern; Correlation analysis

摘要：Per- and polyfluoroalkyl substances (PFAS) are complex emerging pollutants that are widely distributed in soils. The compositions of PFAS vary according to the emission sources. However, the soil distributions of PFAS from different sources are still poorly understood. In this study, the concentrations and compositions of 18 PFAS in soils close to potential sources (industrial areas, airports, landfills, fire stations and agricultural areas) were investigated in Shanghai. The total PFAS concentrations varied from 0.64 to 294 mu g kgc.;.w.. Among the sites, the highest PFAS concentration was found near the fire station (average = 57.9 mu g kgc,1.w.), followed by the industrial area (average = 8.53 mu g kg 1d.w.). The detection frequencies of the 18 PFAS ranged from 47.5% to 100%. Perfluorooctanoic acid (PFOA) and perfluoroheptanoic acid (PFHpA) were detected in all samples. The detection frequencies of PFAS near the fire station were higher than those near other sources. The PFAS in soils were mainly composed of short-chain perfluoroalkyl carboxylic acids (C <= 8). Elevated concentrations of long-chain perfluoroalkyl carboxylic acids (C > 12) were found in industrial area. Principal component analysis revealed that long-chain PFAS had different factor loadings compared to short-chain PFAS. With the exception of agricultural soils, the correlations between individual PFAS were more positive than negative. Strong positive correlations were found within three groups of perfluoroalkyl carboxylic acids (C5-C7, C9-C12, and C14-C18), suggesting their similar inputs and transportation pathways. The PFAS in soils around the fire station were likely directly emitted from a point source. In contrast, the PFAS in soils near the other sites had multiple input pathways, including both direct emission and precursor degradation.