Temporal and spatial trends of perfluorinated compounds in ringed seal (Phoca hispida) from Greenland
Temporal and spatial trends of perfluorinated compounds in ringed seal (Phoca hispida) from Greenland
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DOI：
10.1021/es0508469
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发表时间：
2005-10-01
影响因子：
11.4
通讯作者：
Dietz, R
中科院分区：
文献类型：
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作者：
Bossi, R;Riget, FF;Dietz, R
全氟化合物(PFC)，如全氟辛烷磺酸(PFOS)及其相关化合物，已被确定为全球污染物，并已显示出它们在食物链中的较高营养水平的生物积累。在远离污染源的偏远地区发现了全氟化碳，如北极。在这项研究中，使用格陵兰岛东部和西部的环状海豹(Phoca Hispida)的存档肝脏样本，测量了选定的PFC浓度的空间和时间趋势。样本是在每个地点的四个不同年份收集的，分别是1986年至2003年在东格陵兰岛和1982年至2003年在西格陵兰岛。全氟辛烷磺酸是样品中全氟碳化物负担的主要贡献者，其次是全氟十一酸。大多数样品中还检出了全氟农酸(PFNA)和全氟十一酸(PFDA)。全氟己烷磺酸盐(PFHxS)和全氟辛烷磺胺(PFOSA)仅零星存在。在任何样品中均未发现可检测浓度的全氟辛酸。对数转换后的全氟辛烷磺酸、PFDA和全氟辛烷中位数浓度的回归分析表明，随着两个地点浓度的增加，存在显著的时间趋势。在两个采样点之间观察到全氟辛烷磺酸浓度的空间趋势(方差分析，p<；0.0001)，东格陵兰岛的海豹中的浓度明显更高。
Perfluorinated compounds (PFCs), such as perfluorooctane sulfonate (PFOS) and related compounds, have been identified as global pollutants and have shown their bioaccumulation into higher trophic levels in the food chain. PFCs have been found in remote areas far from sources, such as the Arctic. In this study spatial and temporal trends in the concentrations of selected PFCs were measured using archived liver samples of ringed seal (Phoca hispida) from East and West Greenland. The samples were collected in four different years at each location, between 1986 and 2003 in East Greenland and between 1982 and 2003 in West Greenland. PFOS was the major contributor to the burden of PFCs in samples, followed by perfluoroundecanoic acid (PFUnA). Perfluorononanoic acid (PFNA) and perfluorodecanoic acid (PFDA) were also detected in most samples. Perfluorohexane sulfonate (PFHxS) and perfluorooctane sulfonamide (PFOSA) were only found sporadically. Perfluorooctanoic acid was not found in detectable concentrations in any sample. Regression analysis of logarithmic transformed PFOS, PFDA, and PFUnA median concentrations indicated a significant temporal trend with increasing concentrations at both locations. A spatial trend in PFOS concentrations (ANOVA, p < 0.0001) was observed between the two sampling locations, with significantly higher concentrations in seals from East Greenland.