色谱

色谱 ›› 2016, Vol. 34 ›› Issue (10): 968-971.DOI: 10.3724/SP.J.1123.2016.06024

• 特别策划:离子态化合物色谱分析专栏 • 上一篇    下一篇

高压离子色谱法快速测定饮用水中7种无机阴离子

宋小卫1, 高立红2, 史亚利1, 蔡亚岐1, 李仁勇2   

  1. 1. 中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室, 北京 100085;
    2. 赛默飞世尔科技(中国)有限公司应用研发中心, 北京 100102
  • 收稿日期:2016-06-16 出版日期:2016-10-08 发布日期:2013-04-03
  • 通讯作者: 史亚利
  • 基金资助:

    国家重大科学仪器设备开发专项（2012YQ09022907）.

Rapid determination of seven inorganic anions by high pressure ion chromatography in drinking water

SONG Xiaowei1, GAO Lihong2, SHI Yali1, CAI Yaqi1, LI Renyong2   

  1. 1. State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
    2. Application Development Center, Thermo Fisher Scientific, Beijing 100102, China
  • Received:2016-06-16 Online:2016-10-08 Published:2013-04-03
  • Supported by:

    National Key Scientific Instrument and Equipment Development Projects (No. 2012YQ09022907).

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102

被引次数

3

摘要：

建立了使用高压离子色谱快速测定饮用水中7种无机阴离子的方法。环境水样经0.22 μm尼龙滤膜过滤后可直接进样分析。采用Dionex Integrion高压离子色谱仪和AS22-Fast-4 μm阴离子交换柱（150 mm×4 mm），可在5 min内完成对F-、Cl-、Br-、NO2-、NO3-、SO42-和PO43-这7种阴离子的分析。以4.5 mmol/L碳酸钠和1.4 mmol/L碳酸氢钠为淋洗液，流速为2mL/min。7种阴离子的检出限为0.007~0.07 mg/L（S/N=3），在较宽范围内有良好的线性关系（相关系数不小于0.999）和重现性（相对标准偏差不大于0.48%，n=8）。实际样品加标回收率为91.4%~109.7%，相对标准偏差为0.30%~0.45%（n=5）。将该方法应用于饮用水厂进出水的分析，结果表明在进出水中检出6种阴离子，以Cl-、NO3-和SO42-为主。该方法简便快速、灵敏准确，尤其适合高通量样品中阴离子的快速分析。

关键词: 高压离子色谱, 快速分析, 阴离子, 饮用水

Abstract:

A new method was developed for the determination of inorganic anions in drinking water by high pressure ion chromatography (HPIC). Water samples were analyzed directly after filtered by 0.22 μm nylon membrane. Seven anions (F-, Cl-, Br-, NO2-, NO3-, SO42- and PO43-) were separated well in 5 min by Dionex Integrion HPIC and AS22-Fast-4 μm anion exchange column. In this study, 4.5 mmol/L sodium carbonate and 1.4 mmol/L sodium bicarbonate were used as the mobile phases with the flow rate of 2 mL/min. The limits of detection of the analytes (S/N=3) ranged from 0.007 to 0.07 mg/L, and they all had good linear relationships (r≥0.999) in a wide range with good relative standard deviations (RSDs≤0.48%, n=8). The recoveries of the seven anions in drinking water ranged in 91.4%-109.7% with RSDs of 0.30%-0.45% (n=5). The developed method was applied to analyze the drinking water samples from seven tap waterworks. The results showed that six anions were detected in these samples, and Cl-, NO3- and SO42- were the predominant anions. The method is simple, rapid, accurate, reliable, and suitable for the rapid determination of common anions in water samples.

Key words: anions, drinking water, high pressure ion chromatography (HPIC), rapid determination

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