Simultaneous analysis of neutral and ionizable per- and polyfluoroalkyl substances in air
Simultaneous analysis of neutral and ionizable per- and polyfluoroalkyl substances in air
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同时分析空气中的中性和可电离的全氟烷基和多氟烷基物质
DOI：
10.1016/j.chemosphere.2021.130607
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发表时间：
2021
期刊：
影响因子：
8.8
通讯作者：
Yamashita Nobuyoshi
中科院分区：
文献类型：
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作者：
Wu Rongben;Lin Huiju;Yamazaki Eriko;Taniyasu Sachi;Soerengaard Mattias;Ahrens Lutz;Lam Paul K.S.;Eun Heesoo;Yamashita Nobuyoshi
采用由石英纤维过滤器（QFF）、聚氨酯泡沫（PUF）和人工活性炭（GAIAC™）组成的Nanosampler-20空气采样器（NS 20），对空气中离子型和中性全氟烷基和多氟烷基物质（PFASs）的颗粒相和气相同时分析进行了初步验证。全氟烷磺酰氨基乙醇（FOSE）主要残留在PUF中，而其他中性分析物主要存在于GAIAC中。全氟烯烃、氟调聚物醇（FTOH）、氟调聚物碘（FTIs）的回收率在70%~ 120%之间，全氟碘烷烃（FIA）和二碘氟烷烃（FDIA）的回收率在50%~ 70%之间，全氟烷烃磺酰胺（FOSA）的回收率较低。突破性实验表明，几乎所有的目标分析物都被很好地捕获在GAIAC™中，包括非常挥发的4：2 FTOH。应用于真实的采样，我们的结果表明，6：2和8：2 FTOH是最丰富的物种，检测到的水平为190 pg/m3和160 pg/m3。据我们所知，首次在环境空气中检测到FDIA，平均水平为8.3 pg/m3。总体而言，从真实的空气样品中观察到的分布反映了目前PFAS生产中从长链到短链的工业过渡。我们的研究结果表明，目前的方法是有前途的更全面的了解PFASs在空气中的命运。
A new method is preliminarily validated for the simultaneous analysis of ionic and neutral per- and polyfluoroalkyl substances (PFASs) in both particulate and gaseous phases in air using a nanosampler-20 air sampler (NS20) composed of quartz fiber filters (QFFs), polyurethane foam (PUF) and artificial activated charcoal (GAIAC™). Perfluoroalkane sulfonamido ethanols (FOSEs) mainly remained in PUF, whereas the other neutral analytes were mainly found in GAIAC. Satisfactory recoveries were obtained for FOSEs, fluorotelomer alcohols (FTOHs), fluorotelomer iodides (FTIs), ranging fron 70%–120%, moderate recoveries were achieved for perfluorinated iodine alkanes (FIAs) and diiodofluoroalkanes (FDIAs), ranging from 50%–70%, while poor recoveries were found for perfluoroalkane sulfonamides (FOSAs). Breakthrough experiments revealed that almost all the target analytes were well trapped in GAIAC™, including the very volatile 4:2 FTOH. Applying to real sampling, our results showed that 6:2 and 8:2 FTOH were the most abundant species, with levels detected at 190 pg/m3and 160 pg/m3. To the best of our knowledge, FDIAs were detected in ambient air for the first time at an average level of 8.3 pg/m3. Overall, the profiles observed from the real air samples reflected current industrial transition from longer chain to shorter chain in PFAS production. Our results revealed that the current method is promising for a more comprehensive understanding on the fates of PFASs in air.