Per- and polyfluoroalkyl substances in surface water, gas and particle in open ocean and coastal environment
Per- and polyfluoroalkyl substances in surface water, gas and particle in open ocean and coastal environment
复制标题
公海和沿海环境中的地表水、气体和颗粒中的全氟烷基和多氟烷基物质
DOI：
10.1016/j.chemosphere.2021.129869
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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：
Yamazaki Eriko;Taniyasu Sachi;Wang Xinhong;Yamashita Nobuyoshi
对台湾海峡西部、北冰洋西部和南极海洋的大气和海水样本进行了同步采样。首次利用串级冲击器、颗粒物分级器、低温空气采样器和活性碳纤维吸附剂对海洋空气中的颗粒物和气相进行了分析，并在台湾海峡西部进行了应用。表层海水和大气样品中S12PFAS的平均浓度在台湾海峡西部分别为1178 pg/L和24 pg/m~3，在北冰洋西部分别为430 pg/L和6 pg/m~3，在南极海洋分别为456pg/L和3 pg/m~3。台湾海峡西部海域空气中含氟调聚醇(FTOH)和离子型全氟烷基磺酸(PFSA)和全氟烷基羧酸(PFCA)的含量分别为76%和7%。海洋环境中全氟化铵的空气/水交换(KAW)和气粒分配系数(Kp)的区域比较表明，离子型全氟化铵在表层海水和海洋空气之间可能存在分配。这些发现突出了通过组合的新技术在大气全氟辛烷磺酸测量方面的进展，即具有低温空气捕集和/或活性碳吸附的粒度分级颗粒采样。用这两种联用技术观察了全氟辛烷磺酸的Kp与碳链长度的相关性。
A simultaneous sampling of atmospheric and seawater samples was performed in the Taiwan Western Strait, western Arctic Ocean, and the Antarctic Ocean. Analysis of both particle and gas phase PFAS in oceanic air was conducted using cascade impactor particle fractionator, cryogenic air sampler and activated charcoal fiber sorbent for the first time with application in the Taiwan Western Strait. Mean concentration of S12PFAS in surface seawater and atmospheric samples were 1178 pg/L and 24 pg/m3 in the Taiwan Western Strait, 430 pg/L and 6 pg/m3 in the western Arctic Ocean, and 456 pg/L and 3 pg/m3 in the Antarctic Ocean. In oceanic air from the Taiwan Western Strait, fluorotelomer alcohol (FTOH) and the ionic PFAS [perfluoroalkyl sulfonic acid (PFSA) and perfluoroalkyl carboxylic acid (PFCA)] were found in 76% and 7% respectively. Regional comparison of air/water exchange (KAW) and gas-particle (Kp) partition coefficients of PFAS in the oceanic environment indicated potential partitioning of ionic PFAS between surface seawater and oceanic air. These findings highlight the advancement in atmospheric PFAS measurements through combined novel technologies, namely size-fractionated particle sampling with cryogenic air trapping and/or activated charcoal sorption. Correlation between Kp and carbon chain length of PFAS was observed using both hyphenated techniques.