Polyfluoroalkyl compounds in the East Greenland Arctic Ocean
Polyfluoroalkyl compounds in the East Greenland Arctic Ocean
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DOI：
10.1039/c002242j
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发表时间：
2010-01-01
影响因子：
--
通讯作者：
Ebinghaus, Ralf
中科院分区：
文献类型：
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作者：
Busch, Jan;Ahrens, Lutz;Ebinghaus, Ralf
多氟烷基化合物（pfc）在海洋环境中无处不在。假定PFCs通过海洋水流的直接输送或通过挥发性前体化合物的大气输送间接输送到偏远地区。本研究探讨了洋流和大气输送对东格陵兰北冰洋（北纬67.5-80.4度）的影响。本研究在2009年北极夏季采集了38份水样，并采用液相色谱-电喷雾电离-串联质谱（LC-ESI-MS/MS）对其进行了分析。三种PFC类型（即全氟烷基羧酸（PFCAs）、全氟烷基磺酸盐（PFSAs）和全氟烷基磺酰胺）的浓度主要在低pg -1范围内进行量化。主要化合物为PFOSA和PFOA，平均浓度分别为61 pg L-1和51 pg L-1。在北纬75度以北采集的样品中，PFOSA和PFHxA的浓度在统计上显著较高，这表明大气对水样中的浓度有影响。在沿海地区采集的样本中，PFHxS、PFHxA、PFHpA和PFOA的浓度存在显著差异，表明受到了格陵兰大陆的影响。
Polyfluoroalkyl compounds (PFCs) can be found ubiquitously in the marine environment. The transport of PFCs to remote locations is assumed to be by direct transport via oceanic water currents or indirectly via atmospheric transport of volatile precursor compounds. This study investigates the influence of ocean currents and atmospheric transport to the East Greenland Arctic Ocean (67.5-80.4 degrees N). In this study, 38 water samples were collected in the Arctic summer in 2009 and analyzed by liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS). Concentrations of three PFC classes could be quantified (i.e., perfluoroalkyl carboxylic acids (PFCAs), perfluoroalkyl sulfonates (PFSAs) and perfluoroalkyl sulfonamides) predominantly in a low pg L-1 range. Dominating compounds were PFOSA and PFOA with mean concentrations of 61 pg L-1 and 51 pg L-1, respectively. Statistically significant higher concentrations for PFOSA and PFHxA in the samples taken north of 75 degrees N indicate an atmospheric influence on the concentrations found in the water samples. Significant differences in concentrations of PFHxS, PFHxA, PFHpA and PFOA for samples taken in coastal areas indicate an influence from the Greenlandic mainland.