Prevalence of per- and polyfluoroalkyl substances (PFASs) in drinking and source water from two Asian countries
Prevalence of per- and polyfluoroalkyl substances (PFASs) in drinking and source water from two Asian countries
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DOI：
10.1016/j.chemosphere.2020.127115
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发表时间：
2020-10-01
期刊：
影响因子：
8.8
通讯作者：
Aga, Diana S.
中科院分区：
文献类型：
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作者：
Guardian, Mary Grace E.;Boongaling, Edison G.;Aga, Diana S.
本研究的重点是确定来自菲律宾和泰国的饮用水和水源中全氟烷基和多氟烷基物质（PFASs）的含量和水平。采用液相色谱-串联高分辨率质谱法分析了46个样品（18个商业瓶装水，5个自动售货机（再加注站）饮用水和23个水源水）。采用靶向法，在饮用水样品中检测到12种不同的PFASs，总可量化PFASs （Sigma PFASs）水平范围为7.16 ~ 59.49 ng/L；源水中检出15种PFASs， Sigma PFASs范围为15.55 ~ 65.65 ng/L。所有水样中全氟庚酸（PFHpA）、全氟辛酸（PFOA）、全氟壬酸（PFNA）和全氟磺酸（PFOS）的检出率均为100%。使用可疑筛选方法检测到其他六种PFASs，未包括在目标分析中。首次报道了饮用水中存在2-（n -甲基全氟辛烷磺酰胺）乙酸（N-MeFOSAA），并通过可疑筛选在水源水中检测到3种新型PFASs （C5H5OF8、C6H4O2F6和C9H2O2F16）。目标筛选和可疑筛选分析结果表明，检测到的PFASs主要为短链（52%），具有氟化烷基链
The present study focuses on the determination of the occurrence and levels of per- and polyfluoroalkyl substances (PFASs) in the drinking and source water from the Philippines and Thailand. A total of 46 samples (18 commercial bottled waters, 5 drinking water from vending machine (re-fill stations) and 23 source water) were analyzed using liquid chromatography with tandem high-resolution mass spectrometry. Using the targeted method, 12 different PFASs were detected in the drinking water samples with total quantifiable PFASs (Sigma PFASs) levels ranging from 7.16 to 59.49 ng/L; 15 PFASs were detected in source water with Sigma PFASs ranging from 15.55 to 65.65 ng/L. A 100% detection frequency was observed for perfluoroheptanoic acid (PFHpA), perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), and perfluorosulfonic acid (PFOS) in all water samples. Six other PFASs, not included in the targeted analysis, were detected using the suspect screening approach. For the first time, the presence of 2-(N-methylperfluorooctanesulfonamido) acetic acid (N-MeFOSAA) in drinking water is reported, and 3 novel PFASs (C5H5OF8, C6H4O2F6, and C9H2O2F16) were detected using suspect screening in source water. Combined results from target and suspect screening analysis showed that PFASs detected were predominantly (52%) short-chain (with fluorinated alkyl chain of