Prevalence of per- and polyfluoroalkyl substances (PFASs) in drinking and source water from two Asian countries.

Autor: Guardian MGE; Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY, 14260, United States., Boongaling EG; BEST Environmental Services & Testing Corp., Prime Building, Barangay Salawag, Dasmariñas, Cavite, 4114, Philippines., Bernardo-Boongaling VRR; BEST Environmental Services & Testing Corp., Prime Building, Barangay Salawag, Dasmariñas, Cavite, 4114, Philippines., Gamonchuang J; Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand., Boontongto T; Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand., Burakham R; Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand., Arnnok P; Department of Chemistry, Faculty of Science, Ramkhamhaeng University, Bangkok, 10240, Thailand., Aga DS; Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY, 14260, United States. Electronic address: dianaaga@buffalo.edu.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2020 Oct; Vol. 256, pp. 127115. Date of Electronic Publication: 2020 May 19.
DOI: 10.1016/j.chemosphere.2020.127115
Abstrakt: 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 (∑PFASs) levels ranging from 7.16 to 59.49 ng/L; 15 PFASs were detected in source water with ∑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 (C 5 H 5 OF 8, C 6 H 4 O 2 F 6 , and C 9 H 2 O 2 F 16 ) 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 ≤6) which could be explained by their high mobility in the environment. The detected PFASs levels in drinking water will not likely pose immediate health risk to consumers according to US EPA health advisory for PFOS and PFOA of 70 ng/L, but inclusion of bottled and drinking water from re-fill stations in monitoring programs is warranted.
(Copyright © 2020 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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