Occurrence of fluorotelomer alcohols at two Alpine summits: sources, transport and temporal trends

文献类型： 外文期刊

第一作者： Xu, Zhenlan

作者： Xu, Zhenlan;Xu, Zhenlan;Henkelmann, Bernhard;Schramm, Karl-Werner;Xu, Zhenlan;Schramm, Karl-Werner;Li, Lingxiangyu

作者机构：

期刊名称：ENVIRONMENTAL CHEMISTRY （ 影响因子：3.088； 五年影响因子：4.417 ）

ISSN： 1448-2517

年卷期： 2017 年 14 卷 4 期

页码：

收录情况： SCI

摘要： The transport and fate of fluorotelomer alcohols (FTOHs) in the atmosphere affect their risks to the environment and human health. In this study, we aimed to investigate the sources, transport and temporal variations of FTOHs (6:2, 8:2 and 10:2 FTOH) at two Alpine summits (Sonnblick and Zugspitze). The active air sampler consisting of four XAD cartridges was applied to collect FTOHs from 2007 to 2010. Four separate cartridges were assigned for four air flow regimes (three European sectors and one mixed source origin), and switched and controlled on the basis of an hourly trajectory prediction. FTOH (6:2, 8:2 and 10:2) was measured with individual concentrations ranging from less than the limit of detection to 72.4pgm(-3). Also, 8:2 FTOH was the dominant compound, accounting for 41-72% of the total FTOH (sigma FTOH) concentration. Significant differences were not observed in FTOH concentrations between Sonnblick and Zugspitze since the two sites are relatively close compared with the geographic extent of the area studied. Air-flow regime was an important factor determining the atmospheric FTOH levels. Particularly at Zugspitze, air mass from the NE (regions north-east of the Alps) showed the highest median sigma FTOH concentration (36.9pgm(-3)), followed by S (the Po basin in Italy), NW (regions north-west of Alps) and M (mixed source origin, polar regions or high altitudes). Furthermore, the seasonal variation in FTOH concentrations was not correlated with the site temperatures, but was dependent on the wind speed. Overall, the results indicated low FTOH concentrations at these two Alpine summits compared with European populated cities and provided important information for understanding the fate of FTOHs in the Alpine atmosphere.

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