GKSS Research Centre, Institute for Coastal Research, Max Planck Str. 1, 21502 Geesthacht, Germany.
Environ Pollut. 2010 May;158(5):1221-7. doi: 10.1016/j.envpol.2010.01.030. Epub 2010 Feb 24.
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 SigmaPFC 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 SigmaPFC 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.
2007 年和 2008 年期间，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。通过固相萃取和高效液相色谱-串联质谱分析，在雨水样本中测定了 34 种多氟和全氟化合物（PFC）。在雨水中检测到 17 种化合物，西格玛 PFC 浓度范围为 1.6 ng/L 至 48.6 ng/L。全氟辛烷酸（PFOA）和全氟丁烷酸（PFBA）是通常观察到浓度最高的化合物。计算得出的 SigmaPFC 沉积速率在 2 至 91 ng/m2/d 之间。这些发现表明，颗粒相 PFC 通过降水从大气中沉积。可以通过降水量建立 PFC 湿沉积与空气浓度之间的关系。轨迹分析表明，如果考虑详细的空气团历史，才能解释降水对 PFC 浓度和沉积量的估计。
