Three-dimensional spatial distribution of legacy and novel poly/perfluoroalkyl substances in the Tibetan Plateau soil: Implications for transport and sources

Driven by increasingly stringent regulations on the legacy poly/perfluoroalkyl (PFASs), a variety of fluorinated alternatives have emerged on the market. Tibetan Plateau (TP) plays an important role in accumulation of organic pollutants due to its high altitude and wet deposition. In this study, the...

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Autores principales:	Jian Zhou, Guoqing Zhao, Min Li, Jiaqian Li, Xiaoxue Liang, Xinyi Yang, Jia Guo, Tiecheng Wang, Lingyan Zhu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	Novel per- and polyfluoroalkyl substances Soil Tibetan Plateau Spatial distribution Vertical migration Sources Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/6390ede9e3454de2a57fe49f49ab1614
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spelling	oai:doaj.org-article:6390ede9e3454de2a57fe49f49ab16142021-11-28T04:27:38ZThree-dimensional spatial distribution of legacy and novel poly/perfluoroalkyl substances in the Tibetan Plateau soil: Implications for transport and sources0160-412010.1016/j.envint.2021.107007https://doaj.org/article/6390ede9e3454de2a57fe49f49ab16142022-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0160412021006322https://doaj.org/toc/0160-4120Driven by increasingly stringent regulations on the legacy poly/perfluoroalkyl (PFASs), a variety of fluorinated alternatives have emerged on the market. Tibetan Plateau (TP) plays an important role in accumulation of organic pollutants due to its high altitude and wet deposition. In this study, the occurrence, spatial distribution and sources of PFASs in the TP soils were investigated. The total concentrations of PFASs ranged from 0.814–4.51 ng/g in the TP soils, with the identification of a variety of novel PFASs, including fluorotelomer sulfonates (FTSs), chlorinated polyfluorinated ether sulfonic acid (Cl-PFESAs), and hexafluoropropylene oxide (HFPO) homologues. Generally, the PFAS concentrations exhibited an increase trend from the west to east, and gradually increased with the altitude increasing, suggesting the impacts of human activities and mountain cold-trapping. The PFASs decreased with the increase of soil depth, but at different extents, which were related to their occurrence time, interactions with organic matters, and microbial transformation in soil. Most of the PFASs were present as free fractions in soil, particularly for the short-chain perfluoroalkyl acids (PFAAs), implying that they were liable to be accumulated in organisms and transport to groundwater. Multiple source apportionment analyses indicated that PFASs in the soil of TP were not only derived from the local pollution, but also from the atmospheric migration influenced by Indian Monsoon and westerly winds.Jian ZhouGuoqing ZhaoMin LiJiaqian LiXiaoxue LiangXinyi YangJia GuoTiecheng WangLingyan ZhuElsevierarticleNovel per- and polyfluoroalkyl substancesSoilTibetan PlateauSpatial distributionVertical migrationSourcesEnvironmental sciencesGE1-350ENEnvironment International, Vol 158, Iss , Pp 107007- (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Novel per- and polyfluoroalkyl substances Soil Tibetan Plateau Spatial distribution Vertical migration Sources Environmental sciences GE1-350
spellingShingle	Novel per- and polyfluoroalkyl substances Soil Tibetan Plateau Spatial distribution Vertical migration Sources Environmental sciences GE1-350 Jian Zhou Guoqing Zhao Min Li Jiaqian Li Xiaoxue Liang Xinyi Yang Jia Guo Tiecheng Wang Lingyan Zhu Three-dimensional spatial distribution of legacy and novel poly/perfluoroalkyl substances in the Tibetan Plateau soil: Implications for transport and sources
description	Driven by increasingly stringent regulations on the legacy poly/perfluoroalkyl (PFASs), a variety of fluorinated alternatives have emerged on the market. Tibetan Plateau (TP) plays an important role in accumulation of organic pollutants due to its high altitude and wet deposition. In this study, the occurrence, spatial distribution and sources of PFASs in the TP soils were investigated. The total concentrations of PFASs ranged from 0.814–4.51 ng/g in the TP soils, with the identification of a variety of novel PFASs, including fluorotelomer sulfonates (FTSs), chlorinated polyfluorinated ether sulfonic acid (Cl-PFESAs), and hexafluoropropylene oxide (HFPO) homologues. Generally, the PFAS concentrations exhibited an increase trend from the west to east, and gradually increased with the altitude increasing, suggesting the impacts of human activities and mountain cold-trapping. The PFASs decreased with the increase of soil depth, but at different extents, which were related to their occurrence time, interactions with organic matters, and microbial transformation in soil. Most of the PFASs were present as free fractions in soil, particularly for the short-chain perfluoroalkyl acids (PFAAs), implying that they were liable to be accumulated in organisms and transport to groundwater. Multiple source apportionment analyses indicated that PFASs in the soil of TP were not only derived from the local pollution, but also from the atmospheric migration influenced by Indian Monsoon and westerly winds.
format	article
author	Jian Zhou Guoqing Zhao Min Li Jiaqian Li Xiaoxue Liang Xinyi Yang Jia Guo Tiecheng Wang Lingyan Zhu
author_facet	Jian Zhou Guoqing Zhao Min Li Jiaqian Li Xiaoxue Liang Xinyi Yang Jia Guo Tiecheng Wang Lingyan Zhu
author_sort	Jian Zhou
title	Three-dimensional spatial distribution of legacy and novel poly/perfluoroalkyl substances in the Tibetan Plateau soil: Implications for transport and sources
title_short	Three-dimensional spatial distribution of legacy and novel poly/perfluoroalkyl substances in the Tibetan Plateau soil: Implications for transport and sources
title_full	Three-dimensional spatial distribution of legacy and novel poly/perfluoroalkyl substances in the Tibetan Plateau soil: Implications for transport and sources
title_fullStr	Three-dimensional spatial distribution of legacy and novel poly/perfluoroalkyl substances in the Tibetan Plateau soil: Implications for transport and sources
title_full_unstemmed	Three-dimensional spatial distribution of legacy and novel poly/perfluoroalkyl substances in the Tibetan Plateau soil: Implications for transport and sources
title_sort	three-dimensional spatial distribution of legacy and novel poly/perfluoroalkyl substances in the tibetan plateau soil: implications for transport and sources
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/6390ede9e3454de2a57fe49f49ab1614
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Three-dimensional spatial distribution of legacy and novel poly/perfluoroalkyl substances in the Tibetan Plateau soil: Implications for transport and sources

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