Tracing Urban Wastewater Contaminants into the Atlantic Ocean by Nontarget Screening
Tracing Urban Wastewater Contaminants into the Atlantic Ocean by Nontarget Screening
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DOI：
10.1021/acs.est.9b06114
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发表时间：
2020-04-07
影响因子：
11.4
通讯作者：
Hollender, Juliane
中科院分区：
文献类型：
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作者：
Lara-Martin, Pablo A.;Chiaia-Hernandez, Aurea C.;Hollender, Juliane
海洋是超过1亿种人造物质中许多物质的最终下沉。到目前为止，监测仅限于数量较少的目标持久性有机污染物，主要通过大气沉积到达开放水域。然而，尽管沿海来源排放的废水在很大程度上仍未得到探索，但进入海洋环境的数千种污染物的成分和去向仍未得到探索。通过结合新开发的非目标筛选(NTS)工作流程和高分辨率质谱仪(HRMS)，我们已经识别出500多种来自污水的污染物存在于海洋中。来自东北大西洋的样本包含了这种人为的印记，距离海岸线超过30公里，深度超过500米，超出大陆边缘。已确认化合物的范围从药品和个人护理产品到食品添加剂和工业化学品，其中包括几种从未在环境中报告的化合物，因为它们逃避了传统的有针对性的分析方法。预测持续注入这种化学“鸡尾酒”对海洋生态系统的影响是一项艰巨的挑战，因为40%检测到的化合物缺乏关于其用途和生态毒性的信息。
Oceans are the ultimate sink for many of the over 100 million man-made substances. Until now, monitoring was limited to a reduced number of targeted persistent organic pollutants, reaching open waters mainly via atmospheric deposition. However, the composition and fate of the thousands of pollutants reaching the marine environment though wastewater discharges from coastal sources remain largely unexplored. By combining a newly developed nontarget screening (NTS) workflow and high-resolution mass spectrometry (HRMS), we have identified over 500 sewage-derived contaminants occurring in the ocean. Samples from the NE Atlantic contained this anthropogenic imprint at distances over SO km from the coastline and >500 m depth, beyond the continental margin. The range of identified compounds spans from pharmaceuticals and personal care products to food additives and industrial chemicals, including several that have never been reported in the environment, as they escaped conventional targeted analytical methods. Predicting the effects of the continuous input of this chemical "cocktail" on marine ecosystems is a formidable challenge, since 40% of the detected compounds lack information regarding their use and ecotoxicity.