湖北农业科学 ›› 2018, Vol. 57 ›› Issue (7): 108-110.doi: 10.14088/j.cnki.issn0439-8114.2018.07.025

• 检测分析 • 上一篇    下一篇

气相色谱-质谱法/MRM测定生活饮用水中N-二甲基亚硝胺(NDMA)的方法研究

赵丽, 师真, 洪雪花, 李文廷, 张瑞雨   

  1. 昆明市疾病预防控制中心,昆明 650228
  • 收稿日期:2017-11-14 发布日期:2020-01-14
  • 通讯作者: 张瑞雨(1984-),男,云南昆明人,初级理化检验师,主要从事理化检验工作,(电子信箱)417640514@qq.com。
  • 作者简介:赵 丽(1984-),女,云南昆明人,中级理化检验师,硕士,主要从事理化检验工作,(电话)13629687652(电子信箱)zhaoli880@126.com;
  • 基金资助:
    昆明市卫生科技项目[s(后备)-69]

GC-MS/MRM determination of N-Nitrosodimethylamine(NDMA) in Drinking water

ZHAO Li, SHI Zhen, HONG Xue-hua,LI Wen-ting, ZHANG Rui-yu   

  1. Kunming City Center for Disease Control and Prevention,Kunming 650228,China
  • Received:2017-11-14 Published:2020-01-14

摘要: 建立了一种适合于测定生活饮用水中的N-二甲基亚硝胺(NDMA)含量的气相色谱-质谱法(GC-MS)/MRM方法。通过对色谱柱、扫描方式、萃取溶剂、pH和浓缩方式的优化,建立了液液萃取气相色谱-质谱/MRM方法测定生活饮用水中的NDMA。NDMA在0.05~1.00 mg/L线性良好,检出限为0.01 μg/L(S/N=3)。对实际水样进行低、中、高3个不同浓度的加标回收率为66.93%~85.32%,相对标准偏差(RSD)为2.93%~4.19%。该方法灵敏度高、线性范围广、优化了生活饮用水中NDMA的检测条件,适用于生活饮用水中NDMA的检测。

关键词: 生活饮用水, N-二甲基亚硝胺(NDMA), 气相色谱-质谱/MRM(GC-MS/MRM)

Abstract: A analytical method was developed for determination on N-nitrosodimethylamine by GC-MS/MRM. The determination of NDMA in drinking water by gas chromatography-mass spectrometry/MRM method was established by the optimization of chromatographic column,scanning mode,extraction solvent,pH and concentration method. Linear relationship between the peak area and concentration of NDMA was obtained in the range of 0.05~1.0 mg/L. The detection limit was 0.01 μg/L(S/N=3).Tests for recovery and precision of this method were 66.93%~85.32% and the relative standard deviation(RSD) was 2.93%~4.19% by adding 2 different concentrations. The method has high sensitivity,wide linear range and optimized the detection conditions of NDMA in drinking water,and it is suitable for the detection of NDMA in drinking water.

Key words: drinking water, N-nitro sodimethylamine(NDMA), GC-MS/MRM

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