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环境中微量有机污染物的高通量分析方法·A high throughout semi-quantification method for screening organic contaminants in river sediments

本文建立了一种能够同时分析测定沉积物中约900种污染物的高通量方法,对于大多数物质,半定量准确度可以控制在4倍以内,方法回收率为84.1%-128.6%。该方法成功的应用于海河沉积物种有机污染物的识别和定量,共识别出70余种尚未监管的物质,如阻燃剂、药品及个人护理品等,最高浓度达2600 ng/g。该方法可用于沉积物中有机污染物的综合分析,对流域管理中优先污染物识别和排序具有重要价值。该成果发表在Journal of Environmental Management上。【全文链接

Abstract

A high throughout semi-quantification method for screening nearly 900 organic contaminants (OCs) in river sediments has been developed. For most OCs tested, concentrations calculated from the proposed semi-quantification method deviated from actual values by a factor of 4. The overall recovery tests indicated that most OCs can be successfully extracted from sediments with recovery rates from 84.1 to 128.6%. To demonstrate the effectiveness of our method towards OC quantification, we screened OCs from sediments collected from the Haihe River basin. Seventy unregulated OCs (including pesticides, flame retardants, PPCPs, etc.) were identified and quantified at concentrations up to 2600 ng/g from 24 sediment samples. From these results, it is confirmed that the developed method is a useful way to fulfill a comprehensive analysis of OCs in sediments and would be valuable for the identification and prioritization of priority pollutants in watershed management.

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