Effect of heavy metal co-contaminants on the sorption of thirteen anionic per- and poly-fluoroalkyl substances (PFAS) in soils
文献类型：期刊论文
| 作者 | Cai, Wenwen1,2; Navarro, Divina A.4,5; Du, Jun5; Srivastava, Prashant5; Cao, Zhiguo1; Ying, Guangguo3; Kookana, Rai S.4,5 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2023-12-20 |
| 卷号 | 905页码:9 |
| 关键词 | PFAS Heavy metals Sorption Co-contaminants Soil solution chemistry |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2023.167188 |
| 英文摘要 | Understanding the sorption behavior of per- and poly-fluoroalkyl substances (PFAS) in soils are essential for assessing their mobility and risk in the environment. Heavy metals often coexist with PFAS depending on the source and history of contamination. In this study, we investigated the effect of heavy metal co-contaminants (Pb2+, Cu2+ and Zn2+) on the sorption of 13 anionic PFAS with different perfluorocarbon chain length (C3 C9) in two soils with different properties. Results revealed that Pb2+, Cu2+ and Zn2+ had little effect on the sorption of most short-chain compounds, while the presence of these heavy metals enhanced the sorption of long chain PFAS in two soils. The distribution coefficients (Kd) of several long-chain PFAS linearly increased with increasing concentrations of heavy metal, especially in the presence of Pb2+ (Delta K-d/Delta [Pb2+] > 3 for PFOS and PFNA vs <1 for PFPeS and PFHxS). While several mechanisms may have contributed to the enhancement of sorption of PFAS, the heavy metals most likely contributed through enhanced hydrophobic interactions of PFAS by neutralizing the negative charge of adsorption surfaces in soils and thus making it more favorable for their partitioning onto the solid phase. Moreover, the increase in the concentrations of heavy metals led to a decrease in the pH of the system and promoted sorption of long-chain compounds, especially in soil with lower organic carbon content. Overall, this study provides evidence that the presence of co-existing heavy metal cations in soils can significantly enhance the sorption of long-chain PFAS onto soil, thereby potentially limiting their mobility in the environment. |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001085275600001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74975]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Navarro, Divina A. |
| 作者单位 | 1.Henan Normal Univ, Sch Environm, Key Lab Yellow River & Huai River Water Environm &, Henan Key Lab Environm Pollut Control,Minist Educ, Xinxiang 453007, Peoples R China 2.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 3.South China Normal Univ, Sch Environm, Guangzhou 510006, Peoples R China 4.Univ Adelaide, Sch Agr Food & Wine, Waite Campus,Locked Bag 1, Glen Osmond, SA 5064, Australia 5.CSIRO Environm, Locked Bag 2, Glen Osmond 5064, Australia |
| 推荐引用方式 GB/T 7714 | Cai, Wenwen,Navarro, Divina A.,Du, Jun,et al. Effect of heavy metal co-contaminants on the sorption of thirteen anionic per- and poly-fluoroalkyl substances (PFAS) in soils[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,905:9. |
| APA | Cai, Wenwen.,Navarro, Divina A..,Du, Jun.,Srivastava, Prashant.,Cao, Zhiguo.,...&Kookana, Rai S..(2023).Effect of heavy metal co-contaminants on the sorption of thirteen anionic per- and poly-fluoroalkyl substances (PFAS) in soils.SCIENCE OF THE TOTAL ENVIRONMENT,905,9. |
| MLA | Cai, Wenwen,et al."Effect of heavy metal co-contaminants on the sorption of thirteen anionic per- and poly-fluoroalkyl substances (PFAS) in soils".SCIENCE OF THE TOTAL ENVIRONMENT 905(2023):9. |
入库方式： OAI收割
来源：广州地球化学研究所
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