Per- and Polyfluoroalkyl Substances in Dust Collected from Residential Homes and Fire Stations in North America.

Per- and Polyfluoroalkyl Substances in Dust Collected from Residential Homes and Fire Stations in North America.
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从北美住宅和消防局收集的粉尘中的全氟烷基和多氟烷基物质。

DOI:
10.1021/acs.est.0c04869
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发表时间:
2020-11-17
影响因子:
11.4
通讯作者:
Stapleton HM
Stapleton HM
中科院分区:
环境科学与生态学1区
文献类型:
--
作者:
Hall SM;Patton S;Petreas M;Zhang S;Phillips AL;Hoffman K;Stapleton HM

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在过去的几年中,人类接触全氟烷基物质和多氟烷基物质(PFAS)引起了越来越多的关注。研究重点是通过饮用水和饮食接触 PFAS,很少有研究关注室内环境中的接触。为了支持对后一种暴露途径的更多研究,我们进行了一项评估室内灰尘中 PFAS 的研究。我们收集了北卡罗来纳州 184 个家庭以及美国和加拿大 49 个消防站的灰尘样本,并使用液相和气相色谱-质谱法分析了一套 PFAS。 FTOH 和 diPAP 是消防站和室内灰尘中最常见的 PFAS,中值约为 100 ng/g 灰尘或更高。值得注意的是,消防站粉尘中的 PFOS、PFOA、PFHxS、PFNA 和 6:2 diPAP 显着高于家庭粉尘,8:2 FTOH 家庭粉尘显着高于消防站粉尘。此外,将我们的结果与之前发布的值进行比较时,我们发现住宅灰尘中的 PFAA 含量似乎随着时间的推移而下降,特别是 PFOA 和 PFOS。这些结果强调需要更好地了解哪些因素影响灰尘中的 PFAS 含量,并了解灰尘对人类总体 PFAS 暴露的贡献程度。
Over the past few years, human exposure to per- and polyfluoroalkyl substances (PFAS) has garnered increased attention. Research has focused on PFAS exposure via drinking water and diet, and fewer studies have focused on exposure in the indoor environment. To support more research on the latter exposure pathway, we conducted a study to evaluate PFAS in indoor dust. Dust samples from 184 homes in North Carolina and 49 fire stations across the United States and Canada were collected and analyzed for a suite of PFAS using liquid and gas chromatography-mass spectrometry. FTOHs and diPAPs were the most prevalent PFAS in both fire station and house dust, with medians approximately 100 ng/g dust or greater. Notably, PFOS, PFOA, PFHxS, PFNA, and 6:2 diPAP were significantly higher in dust from fire stations than from homes, and 8:2 FTOH was significantly higher in homes than fire stations. Additionally, when comparing our results to earlier published values, we see PFAA levels in residential dust appear to be decreasing over time, particularly for PFOA and PFOS. These results highlight a need to better understand what factors contribute to PFAS levels in dust and to understand how much dust contributes to overall human PFAS exposure.
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影响因子: 11.8
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