Neutral poly-/perfluoroalkyl substances in air and snow from the Arctic.
Neutral poly-/perfluoroalkyl substances in air and snow from the Arctic.
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北极空气和雪中的中性聚/全氟烷基物质
DOI：
10.1038/srep08912
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发表时间：
2015-03-09
影响因子：
4.6
通讯作者：
Ebinghaus R
中科院分区：
文献类型：
--
作者：
Xie Z;Wang Z;Mi W;Möller A;Wolschke H;Ebinghaus R
测量了从纽约采集的空气和雪中中性多/全氟烷基物质(NPFASs)的水平，并测定了它们的气-雪交换，以研究它们是否可以通过气-雪交换的方式重新挥发到大气中。12种中性全氟辛烷磺酸在空气中的总浓度为6.7~39 pg m−3，在雪中的总浓度为330~690 pg L−1。中性PFASs的气体/颗粒分配系数与蒸汽压之间存在显著的对数线性关系。2012年冬春两季，含氟调质醇(FTOHs)和含氟调质丙烯酸酯(FTAs)的气-雪交换通量为正值，表明雪向空气中蒸发净，而全氟辛烷磺胺乙醇(Me/EtFOSEs)向雪中净沉积。FTOHs和FTAs的气雪交换受雪相控制，FOSS的气雪交换受气相控制。气-雪交换可能会显著干扰北极大气中中性全氟辛烷磺酸的浓度。
Levels of neutral poly-/perfluoroalkyl substances (nPFASs) in air and snow collected from Ny-Ålesund were measured and their air-snow exchange was determined to investigate whether they could re-volatilize into the atmosphere driven by means of air-snow exchange. The total concentration of 12 neutral PFASs ranged from 6.7 to 39 pg m−3 in air and from 330 to 690 pg L−1 in snow. A significant log-linear relationship was observed between the gas/particle partition coefficient and vapor pressure of the neutral PFASs. For fluorotelomer alcohol (FTOHs) and fluorotelomer acrylates (FTAs), the air-snow exchange fluxes were positive, indicating net evaporative from snow into air, while net deposition into snow was observed for perfluorooctane sulfonamidoethanols (Me/EtFOSEs) in winter and spring of 2012. The air-snow exchange was snow-phase controlled for FTOHs and FTAs, and controlled by the air-phase for FOSEs. Air-snow exchange may significantly interfere with atmospheric concentrations of neutral PFASs in the Arctic.
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影响因子：
11.4
作者：
Ellis, DA;Martin, JW;Wallington, TJ
通讯作者：
Wallington, TJ
影响因子：
4.4
作者：
Legagneux, L;Cabanes, A;Dominé, F
通讯作者：
Dominé, F
影响因子：
11.4
作者：
Martin, JW;Ellis, DA;Wallington, TJ
通讯作者：
Wallington, TJ
影响因子：
11.4
作者：
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通讯作者：
Simonich, Staci
影响因子：
11.4
作者：
Daly, GL;Wania, F
通讯作者：
Wania, F