Assessment of emerging polar organic pollutants linked to contaminant pathways within an urban estuary using non-targeted analysis,Environmental Science: Processes & Impacts

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Assessment of emerging polar organic pollutants linked to contaminant pathways within an urban estuary using non-targeted analysis
Environmental Science: Processes & Impacts ( IF 4.3 ) Pub Date : 2021-2-1 , DOI: 10.1039/d0em00463d
Kirsten E Overdahl ₁ , Rebecca Sutton , Jennifer Sun , Noelle J DeStefano , Gordon J Getzinger , P Lee Ferguson

Affiliation

A comprehensive, non-targeted analysis of polar organic pollutants using high resolution/accurate mass (HR/AM) mass spectrometry approaches has been applied to water samples from San Francisco (SF) Bay, a major urban estuary on the western coast of the United States, to assess occurrence of emerging contaminants and inform future monitoring and management activities. Polar Organic Chemical Integrative Samplers (POCIS) were deployed selectively to evaluate the influence of three contaminant pathways: urban stormwater runoff (San Leandro Bay), wastewater effluent (Coyote Creek, Lower South Bay), and agricultural runoff (Napa River). Grab samples were collected before and after deployment of the passive samplers to provide a quantitative snapshot of contaminants for comparison. Composite samples of wastewater effluent (24 hours) were also collected from several wastewater dischargers. Samples were analyzed using liquid-chromatography coupled to high resolution mass spectrometry. Resulting data were analyzed using a customized workflow designed for high-fidelity detection, prioritization, identification, and semi-quantitation of detected molecular features. Approximately 6350 compounds were detected in the combined data set, with 424 of those compounds tentatively identified through high quality spectral library match scores. Compounds identified included ethoxylated surfactants, pesticide and pharmaceutical transformation products, polymer additives, and rubber vulcanization agents. Compounds identified in samples were reflective of the apparent sources and pathways of organic pollutant inputs, with stormwater-influenced samples dominated by additive chemicals likely derived from plastics and vehicle tires, as well as ethoxylated surfactants.

中文翻译：

使用非靶向分析评估与城市河口污染途径相关的新兴极地有机污染物

使用高分辨率/精确质量 (HR/AM) 质谱法对极性有机污染物进行全面的非靶向分析，已应用于美国西海岸主要城市河口旧金山 (SF) 湾的水样各州评估新出现污染物的发生情况，并为未来的监测和管理活动提供信息。有选择地部署了极地有机化学综合采样器 (POCIS) 以评估三种污染物途径的影响：城市雨水径流（圣莱安德罗湾）、废水流出物（Coyote Creek、下南湾）和农业径流（纳帕河）。在部署被动采样器之前和之后收集抓取样本，以提供污染物的定量快照以供比较。废水流出物的复合样本（24 小时）也从几个废水排放者处收集。使用与高分辨率质谱联用的液相色谱分析样品。使用专为检测到的分子特征的高保真检测、优先级排序、识别和半定量而设计的定制工作流程分析结果数据。在组合数据集中检测到大约 6350 种化合物，其中 424 种化合物通过高质量光谱库匹配分数初步鉴定。鉴定出的化合物包括乙氧基化表面活性剂、农药和药物转化产物、聚合物添加剂和橡胶硫化剂。样品中鉴定出的化合物反映了有机污染物输入的明显来源和途径，

更新日期：2021-03-03

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