Wet deposition of poly- and perfluorinated compounds in Northern Germany
Wet deposition of poly- and perfluorinated compounds in Northern Germany
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DOI：
10.1016/j.envpol.2010.01.030
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发表时间：
2010-05-01
影响因子：
8.9
通讯作者：
Ebinghaus, Ralf
中科院分区：
文献类型：
--
作者：
Dreyer, Annekatrin;Matthias, Volker;Ebinghaus, Ralf
在2007年和2008年的7个月期间，在德国北部的一个监测点同时采集了20个降水样本和空气样本。采用固相萃取法和HPLC-MS/MS法测定了雨水样品中的34种多氟化合物和全氟化合物（PFC）。在雨水中检测到17种化合物，其Sigma PFC浓度范围为1.6 ~ 48.6 ng L（-1）。全氟辛酸盐（PFOA）和全氟丁酸盐（PFBA）是通常观察到的浓度最高的化合物。计算的Sigma PFC沉积速率在2到91 ng m(-2) d（-1）之间。这些结果表明，颗粒相PFC是通过降水从大气中沉积下来的。PFC湿沉积与空气浓度之间的关系可以通过降水量来确定。轨迹分析表明，只有考虑到详细的气团历史，才能解释降水中的PFC浓度和沉积估计。(C) 2010 Elsevier Ltd.版权所有。
Twenty precipitation samples were taken concurrently with air samples at a northern German monitoring site over a period of 7 months in 2007 and 2008. Thirty four poly- and perfluorinated compounds (PFC) were determined in rain water samples by solid phase extraction and HPLC-MS/MS analysis. Seventeen compounds were detected in rain water with Sigma PFC concentrations ranging from 1.6 ng L(-1) to 48.6 ng L(-1). Perfluorooctanoate (PFOA) and perfluorobutanate (PFBA) were the compounds that were usually observed in highest concentrations. Calculated Sigma PFC deposition rates were between 2 and 91 ng m(-2) d(-1). These findings indicate that particle phase PFC are deposited from the atmosphere by precipitation. A relationship between PFC wet deposition and air concentration may be established via precipitation amounts. Trajectory analysis revealed that PFC concentration and deposition estimates in precipitation can only be explained if a detailed air mass history is considered. (C) 2010 Elsevier Ltd. All rights reserved.