Observation of emerging per- and polyfluoroalkyl substances (PFASs) in Greenland marine mammals
Observation of emerging per- and polyfluoroalkyl substances (PFASs) in Greenland marine mammals
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DOI：
10.1016/j.chemosphere.2015.10.116
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发表时间：
2016-02-01
期刊：
影响因子：
8.8
通讯作者：
Dietz, Rune
中科院分区：
文献类型：
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作者：
Gebbink, Wouter A.;Bossi, Rossana;Dietz, Rune
本试点研究审查了2012-2013年从东格陵兰采集的环海豹、北极熊以及首次从东格陵兰岛采集的虎鲸肝脏中新出现的全氟烷基和多氟烷基物质，即一套短链全氟烷酸、PFAA前体和替代化学品，以及遗留的全氟烷基物质(长链长PFAA)。在新出现的全氟辛烷磺酸中，在北极野生动物中检测到了全氟丁烷磺酸(PFBS)和F-53B(一种氯化多氟醚磺酸)，尽管与全氟辛烷磺酸(PFOS)相比，其浓度约低四个数量级。在三个物种中，全氟辛烷磺酸与F-53B呈正相关，而与全氟辛烷磺酸无关。总共在虎鲸身上检测到17种PFASs，其中包括一对母婴，这证明了母体转移。虎鲸体内的Sigma全氟辛烷磺酸浓度(269+/-90 ng/g)与环斑海豹中的浓度(138+/-7 ng/g)相当，但与北极熊肝脏中的浓度(2336+/-263 ng/g)相比，低了一个数量级。虎鲸的长链PFAA的模式与环海豹和北极熊的模式不同。在监测的PFAA前体中，所有三个物种中都只检测到全氟辛烷磺酰胺(FOSA)，FOSA/全氟辛烷磺酸比率和异构体模式表明，与北极熊和环斑海豹相比，虎鲸降解FOSA的代谢能力潜在较低。(C)2015爱思唯尔有限公司。保留所有权利。
The present pilot study examined emerging per- and polyfluoroalkyl substances (PFASs), i.e., a suite of short chain perfluoroalkyl acids (PFAAs), PFAA precursors and replacement chemicals, and legacy PFASs (long chain length PFAAs) in livers from ringed seals, polar bears and, for the first time, killer whales from East Greenland collected in 2012-2013. Among the emerging PFASs, perfluorobutanesulfonic acid (PFBS) and F-53B (a chlorinated polyfluorinated ether sulfonic acid) were detected in Arctic wildlife, albeit at concentrations approximately four orders of magnitude lower compared to perfluorooctanesulfonic acid (PFOS). PFOS was positively correlated with F-53B, but not PFBS in all three species. A total of 17 PFASs were detected in killer whales, including in a mother-fetus pair, demonstrating maternal transfer. Sigma PFAS concentrations in killer whales (269 +/- 90 ng/g) were comparable to concentrations found in ringed seals (138 +/- 7 ng/g), however, an order of magnitude lower compared to concentrations found in polar bear livers (2336 +/- 263 ng/g). Patterns of long chain PFAAs in killer whales differed from the pattern in ringed seals and polar bears. Of the monitored PFAA precursors, only perfluorooctanesulfonamide (FOSA) was detected in all three species, and FOSA/PFOS ratios and isomer patterns indicated that killer whales have a potential lower metabolic capacity to degrade FOSA compared to polar bears and ringed seals. (C) 2015 Elsevier Ltd. All rights reserved.