Exposure to polybrominated diphenyl ethers and perfluoroalkyl substances in a remote population of Alaska Natives.
Exposure to polybrominated diphenyl ethers and perfluoroalkyl substances in a remote population of Alaska Natives.
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DOI：
10.1016/j.envpol.2017.08.020
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发表时间：
2017-12
期刊：
影响因子：
--
通讯作者：
Carpenter DO
中科院分区：
文献类型：
--
作者：
Byrne S;Seguinot-Medina S;Miller P;Waghiyi V;von Hippel FA;Buck CL;Carpenter DO
许多阿拉斯加土著社区依赖传统的海洋饮食，其中含有持久性有机污染物（POPs）。室内环境也是持久性有机污染物的来源之一。多溴联苯醚（PBDEs）和全氟烷基物质（PFASs）存在于传统饮食和家庭室内环境中。我们评估了圣劳伦斯岛上两个偏远阿拉斯加原住民村庄居民对多溴二苯醚和全氟辛烷磺酸的暴露情况。用九棘棘鱼（Pungitious Pungitious）和阿拉斯加黑鱼（Dallia pectoralis）检测这些化合物在当地环境中的积累。测量了从圣劳伦斯岛49个家庭收集的灰尘以及85名岛上居民的血清中多溴二苯醚和全氟辛烷磺酸的浓度。以九棘棘鱼和阿拉斯加黑鱼为哨兵，检测食物网中多溴二苯醚和全氟辛烷磺酸的积累。尽管粉尘样品中全氟辛酸（PFASs）浓度较低，但血清中全氟辛酸（PFNA）和全氟癸酸（PFUnDA）浓度升高。多溴二苯醚在粉尘和血清中的浓度与来自美国邻近地区的浓度相似。对于少数多溴二苯醚，粉尘和血清浓度之间的统计关联是明显的，这表明可能的暴露途径在人血清和棘鱼之间的主要化合物是相似的；然而，黑鱼积累的全氟磺酸在棘鱼和人类血清中都没有发现。家庭灰尘会导致多溴二苯醚暴露，但不会导致PFAS暴露。血清中长链PFAS浓度升高可能是由于接触传统食品所致。哨兵鱼类中全氟辛烷醚和多溴二苯醚的存在表明大气沉积和生物积累以及局部环境污染。圣劳伦斯岛上的阿拉斯加原住民通过全球运输和当地污染源暴露于多溴二苯醚和全氟辛烷。
Many Alaska Native communities rely on a traditional marine diet that contains persistent organic pollutants (POPs). The indoor environment is also a source of POPs. Polybrominated diphenyl ethers (PBDEs) and perfluoroalkyl substances (PFASs) are present both in the traditional diet and the home indoor environment. We assessed exposure to PBDEs and PFASs among residents of two remote Alaska Native villages on St. Lawrence Island. Ninespine stickleback (Pungitious pungitious) and Alaska blackfish (Dallia pectoralis) were used to detect accumulation of these compounds in the local environment. Concentrations of PBDEs and PFASs were measured in dust collected from 49 households on St. Lawrence Island, as well as in blood serum from 85 island residents. Resident ninespine stickleback and Alaska blackfish were used as sentinels to detect accumulation of PBDEs and PFASs in the food web. Serum concentrations of perfluorononanoic acid (PFNA) and perfluoroundecanoic acid (PFUnDA) were elevated, despite low concentrations of PFASs in dust samples. Concentrations of PBDEs in dust and serum were similar to those from the contiguous United States. Statistical associations between dust and serum concentrations are apparent for a small number of PBDEs, suggesting a possible route of exposure Predominant compounds were similar between human sera and stickleback; however, blackfish accumulated PFASs not found in either stickleback or human sera. Household dust contributes to PBDE exposure, but not PFAS exposure. Elevated concentrations of long chain PFAS in serum are likely due to exposure from traditional foods. The presence of both PFASs and PBDEs in sentinel fish species suggests atmospheric deposition and bioaccumulation, as well as local environmental contamination. Alaska Natives on St. Lawrence Island are exposed to PBDEs and PFASs through global transport as well as local sources of pollution.
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