Targeted analysis and Total Oxidizable Precursor assay of several insecticides for PFAS

IF 6.6 Q1 ENGINEERING, ENVIRONMENTAL Journal of hazardous materials letters Pub Date : 2022-11-01 DOI:10.1016/j.hazl.2022.100067

Steven Lasee , Kaylin McDermett , Naveen Kumar , Jennifer Guelfo , Paxton Payton , Zhao Yang , Todd A. Anderson

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Abstract

Targeted analysis for 24 Per- and Polyfluoroalkyl Substances (PFAS) was conducted on 10 insecticide formulations used on a United States Department of Agriculture crop research field. Perfluorooctane sulfonic acid (PFOS) was found in 6 of the 10 formulations with concentrations ranging from 3.92 to 19.2 mg/kg. Further analysis of soil and plant samples collected at the site found several additional PFAS, with PFOS being the most prominent. Suspect screening was then conducted on the formulations and provided several suspected PFAS in addition to the 24 targeted analyzed PFAS in 7 of the 10 samples, one of which showed no PFAS during targeted analysis. PFAS-precursor oxidation was then conducted on the two insecticide formulations with the greatest lists of suspected PFAS as validation of potential unknown PFAS in the formulations. This study revealed a previously unknown potential PFAS contamination source for rural and agricultural environments.

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几种杀虫剂对PFAS的靶向分析及总氧化前体测定

对美国农业部作物研究领域使用的10种杀虫剂配方进行了24种全氟和多氟烷基物质(PFAS)的针对性分析。10种配方中有6种含有全氟辛烷磺酸，浓度范围为3.92至19.2毫克/千克。对现场收集的土壤和植物样本的进一步分析发现了几种额外的全氟辛烷化合物，其中全氟辛烷磺酸最为突出。然后对配方进行可疑筛选，在10个样品中的7个样品中，除了24个目标分析的PFAS外，还提供了几个可疑的PFAS，其中一个样品在靶向分析时没有显示PFAS。然后对可疑PFAS列表最多的两种杀虫剂配方进行PFAS前体氧化，以验证配方中潜在的未知PFAS。这项研究揭示了一个以前未知的农村和农业环境的潜在PFAS污染源。

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来源期刊

Journal of hazardous materials letters Pollution, Health, Toxicology and Mutagenesis, Environmental Chemistry, Waste Management and Disposal, Environmental Engineering

CiteScore

10.30

自引率

0.00%

发文量

审稿时长

20 days