Vertical profiles of dissolved PFASs in Arctic shelf waters

This data set reports dissolved concentrations of several poly- and perfluorinated alkyl substances (PFASs) in vertical water column profiles from the Arctic shelf. Samples were collected from seven locations on the Beaufort Chukchi Shelf from surface to bottom (up to 385 m) by the United States Coast Guard icebreaker in October 2012. Concentrations of PFASs in water samples collected along the Arctic shelf at different depths from nearshore to offshore were always dominated by PFOA, followed by PFOS and PFNA. Other PFASs were not routinely detected. Different PFAS composition profiles were observed between the samples collected along the Arctic shelf and the Arctic Ocean.

本数据集报道了北极陆架垂直水柱剖面中多种全氟和多氟烷基物质（poly- and perfluorinated alkyl substances, PFASs）的溶解态浓度。2012年10月，美国海岸警卫队破冰船在波弗特-楚科奇陆架的7个站位采集了水样，采样深度覆盖从表层至水底（最大深度达385米）。在北极陆架不同深度、从近岸到离岸海域采集的水样中，PFASs的浓度始终以全氟辛酸（Perfluorooctanoic Acid, PFOA）占主导，其次为全氟辛烷磺酸（Perfluorooctanesulfonic Acid, PFOS）与全氟壬酸（Perfluorononanoic Acid, PFNA）。其余PFASs未被常规检出。沿北极陆架采集的样本与北冰洋海域的样本相比，PFAS组成剖面存在显著差异。