PFOS dominates PFAS composition in ambient fine particulate matter (PM2.5) collected across North Carolina nearly 20 years after the end of its US production

被引：34

作者：

Zhou, J. ^{[1
]}

Baumann, K. ^{[1
]}

Mead, R. N. ^{[2
]}

Skrabal, S. A. ^{[2
]}

Kieber, R. J. ^{[2
]}

Avery, G. B. ^{[2
]}

Shimizu, M. ^{[2
]}

DeWitt, J. C. ^{[3
]}

Sun, M. ^{[4
]}

Vance, S. A. ^{[3
]}

Bodnar, W. ^{[1
]}

Zhang, Z. ^{[1
]}

Collins, L. B. ^{[5
]}

Surratt, J. D. ^{[1
,6
]}

Turpin, B. J. ^{[1
]}

机构：

[1] Univ North Carolina Chapel Hill, Gillings Sch Global Publ Hlth, Dept Environm Sci & Engn, Chapel Hill, NC 27599 USA

[2] Univ North Carolina Wilmington, Ctr Marine Sci, Dept Chem & Biochem, Wilmington, NC USA

[3] East Carolina Univ, Brody Sch Med, Dept Pharmacol & Toxicol, Greenville, NC USA

[4] Univ North Carolina Charlotte, Dept Civil & Environm Engn, Charlotte, NC USA

[5] North Carolina State Univ, Mol Educ Technol & Res Innovat Ctr, Raleigh, NC USA

[6] Univ North Carolina Chapel Hill, Dept Chem, Chapel Hill, NC 27599 USA

来源：

ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS | 2021年 / 23卷 / 04期

关键词：

PERFLUOROALKYL SUBSTANCES PFAS; PERFLUOROOCTANE SULFONATE PFOS; CAPE FEAR RIVER; POLYFLUORINATED ALKYL SUBSTANCES; ANNULAR DIFFUSION DENUDER; POLYFLUOROALKYL SUBSTANCES; WASTE-WATER; AIR CONCENTRATIONS; SURFACE-WATER; OUTDOOR AIR;

D O I：

10.1039/d0em00497a

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Contamination of drinking water by per- and polyfluoroalkyl substances (PFASs) emitted from manufacturing plants, fire-fighting foams, and urban waste streams has received considerable attention due to concerns over toxicity and environmental persistence; however, PFASs in ambient air remain poorly understood, especially in the United States (US). We measured PFAS concentrations in ambient fine particulate matter (PM2.5) at 5 locations across North Carolina over a 1 year period in 2019. Thirty-four PFASs, including perfluoroalkyl carboxylic, perfluoroalkane sulfonic, perfluoroalkyl ether carboxylic and sulfonic acids were analyzed by UHPLC/ESI-MS/MS. Quarterly averaged concentrations ranged from <0.004-14.1 pg m(-3). Perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) ranged from <0.18 to 14.1 pg m(-3), comparable to previous PM2.5 measurements from Canada and Europe (<0.02-3.5 pg m(-3)). Concentrations above 1 pg m(-3) were observed in July-September at Charlotte (14.1 pg m(-3), PFOA), Wilmington (4.75 pg m(-3), PFOS), and Research Triangle Park (1.37 pg m(-3), PFOS). Notably, PM2.5 has a short atmospheric lifetime (<2 weeks), and thus, the presence of PFOS in these samples raises questions about their sources, since PFOS production was phased out in the US similar to 20 years ago. This is the first US study to provide insights into ambient PFAS concentrations in PM2.5.

引用

页码：580 / 587

页数：8