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首页> 外文期刊>Journal of Hazardous Materials >Rapid determination of trace level N-nitrosamine precursors in secondary-treated wastewater by using two dimensional-ion chromatography
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Rapid determination of trace level N-nitrosamine precursors in secondary-treated wastewater by using two dimensional-ion chromatography

机译：二维离子色谱法快速测定二次处理废水中的痕量N-亚硝胺前体

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摘要

Nowadays, drinking water treatment involves large usage of chloramines making control of N-nitrosamines formation very challenging. Detecting and removing N-nitrosamine precursors in water is the most effective method to reduce N-nitrosamine formation. Therefore, it is essential to develop methods to detect N-nitrosamine precursors. In this paper, a method based on two-dimensional ion chromatography (2D-IC) is presented for detecting the trace levels of N-nitrosamines precursors, including dimethylamine, trimethylamine, diethylamine, methylethylamine, morpholine and piperidine, in relatively short time with minimized sample preparation. The 2D-IC method exhibits better sensitivity for analytes suffering from matrix interference, by eliminating interfering sample matrix ions, than conventional one-dimensional (1D) IC. Detection limits of the six amines were within the range of 0.035 mu g/L to 0.1 mu g/L. Excellent linearity was achieved for all the target amines with the method developed. The proposed method in this study was applied in the analysis of real wastewater samples. High recoveries ranging from 91.7 to 109.8% and relative standard deviation of less than 5.3% were obtained. The fully automated and simple method shows high selectivity against interfering metal ions and low detection limits, making routine detection of N-nitrosamines precursors practical.
机译：如今，饮用水处理涉及大量使用氯胺，因此控制N-亚硝胺的形成非常困难。检测和去除水中的N-亚硝胺前体是减少N-亚硝胺形成的最有效方法。因此，开发检测N-亚硝胺前体的方法至关重要。本文提出了一种基于二维离子色谱法（2D-IC）的方法，可在相对短的时间内以最小化方法检测痕量N-亚硝胺前体，包括二甲胺，三甲胺，二乙胺，甲乙胺，吗啉和哌啶样品制备。与传统的一维（1D）IC相比，2D-IC方法通过消除干扰的样品基质离子，对遭受基质干扰的分析物具有更高的灵敏度。六种胺的检出限为0.035μg/ L至0.1μg/ L。通过开发的方法，所有目标胺均具有出色的线性。本研究中提出的方法用于实际废水样品的分析。获得了91.7％至109.8％的高回收率，相对标准偏差小于5.3％。全自动，简单的方法显示出对干扰金属离子的高选择性和低检测限，使常规检测N-亚硝胺前体成为现实。

著录项

  • 来源
    《Journal of Hazardous Materials》 |2019年第15期|452-458|共7页
  • 作者

    Ji Ya; Guo Rui; Lee Soon Fatt; Li Sam Fong Yau;

  • 作者单位

    Natl Univ Singapore, Fac Sci, Dept Chem, Singapore 117543, Singapore;

    Natl Univ Singapore, NUS Environm Res Inst, Singapore 117411, Singapore;

    Singapore CMD Applicat & Training Ctr, Thermo Fisher Sci, Singapore 739256, Singapore;

    Natl Univ Singapore, Fac Sci, Dept Chem, Singapore 117543, Singapore|Natl Univ Singapore, NUS Environm Res Inst, Singapore 117411, Singapore;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    N-nitrosamines precursors; Ion chromatography; Two-dimensional; Secondary-treated wastewater; Chloramines;

    机译：N-亚硝胺前体;离子色谱;二维;二次处理废水;氯胺;

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