Comprehensive Analysis of Multiresidue Pesticides from Process Water Obtained from Wastewater Treatment Facilities Using Solid-Phase Microextraction,Environmental Science & Technology

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Comprehensive Analysis of Multiresidue Pesticides from Process Water Obtained from Wastewater Treatment Facilities Using Solid-Phase Microextraction
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2020-11-25 , DOI: 10.1021/acs.est.0c04875
Daniel A. Rickert ₁ , Varoon Singh ₁ , Milaan Thirukumaran ₁ , Jonathan J. Grandy ₁ , João Raul Belinato ₁ , Maryam Lashgari ₁ , Janusz Pawliszyn ₁

Affiliation

A novel magnetic blade spray–tandem mass spectrometry (MBS-MS/MS) assay was developed and optimized, and its performance was characterized for the analysis of 204 pesticides from wastewater treatment facility (WWTF) process water. These results were compared and experimentally validated with an untargeted, high-resolution MS (HRMS) approach that employed liquid chromatography (LC)-amenable thin-film microextraction (TFME) devices to further elucidate the fate of pesticides through the WWTF process. As a result of our optimizations, we report an optimized workflow with an extraction time of 10 min, 150 μg of magnetic HLB particles, and 5 s of desorption. Excellent linearity was obtained for 168 of the 204 pesticides in deionized water, where 90% of the quantifiable pesticides had a determination coefficient (R²) of 0.99 across 3 orders of magnitude and 80% had limits of quantification below 0.5 ng/mL. We subsequently applied our optimized MBS-MS/MS method for the analysis of samples collected during the various stages of wastewater treatment from two WWTFs in Southern Ontario. This article presents a new streamlined methodology with a fast turnaround time for analyzing a large panel of pesticides, ultimately providing us the opportunity to evaluate the performance of two WWTFs for their efficacy in removing these toxic chemicals.

中文翻译：

固相微萃取技术综合分析废水处理设施工艺水中的多残留农药

新型磁叶片喷雾串联质谱分析法（MBS-MS / MS）已开发和优化，其性能可用于分析废水处理设施（WWTF）工艺水中的204种农药。比较了这些结果，并使用了无目标的高分辨率MS（HRMS）方法进行了实验验证，该方法采用液相色谱（LC）-适合的薄膜微萃取（TFME）装置，通过WWTF工艺进一步阐明了农药的命运。作为优化的结果，我们报告了优化的工作流程，其提取时间为10分钟，磁性HLB颗粒为150μg，解吸时间为5 s。去离子水中204种农药中的168种获得了极好的线性，其中90％的可定量农药的测定系数为（R ²在3个数量级上的0.99）和80％的定量限低于0.5 ng / mL。随后，我们应用优化的MBS-MS / MS方法分析了安大略省南部两个污水处理厂在废水处理各个阶段收集的样品。本文介绍了一种新的简化方法，该方法具有快速的周转时间，可用于分析大量农药，最终为我们提供了机会来评估两种WWTF在清除这些有毒化学药品方面的功效。

更新日期：2020-12-15

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