高压离子色谱法快速测定水中7种无机阴离子
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(1. 广州检验检测认证集团有限公司,广东 广州 510000;2. 国家加工食品质量检测中心,广东 广州 510000)

作者简介:

李倩盈,女,广州检验检测认证集团有限公司助理工程师。

通讯作者:

梁志森(1989—),男,广州检验检测认证集团有限公司工程师,博士。E-mail:1061656375@qq.com

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Rapid determination of seven inorganic anions in water by high pressure ion chromatography
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(1. Guangzhou Inspection and Certification Group Co., Ltd., Guangzhou, Guangdong 510000, China;2. National Centre for Quality Inspection of Processed Food, Guangzhou, Guangdong 510000, China)

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    摘要:

    目的:建立高压离子色谱法快速测定水中氟离子、亚氯酸根离子、氯离子、硝酸根离子、氯酸根离子、溴离子、硫酸根离子7种无机阴离子含量的方法。方法:选用Dionex Integrion高压离子色谱仪和Ionpac AS19色谱分析柱,KOH淋洗液浓度为20 mmol/L、流速为2.00 mL/min条件下,通过抑制型电导检测器测定水中7种无机阴离子含量。结果:7种无机阴离子在7 min内实现分离,该方法的线性相关系数≥ 0.999,相对标准偏差<2%,7种阴离子的样品加标回收率为95.3%~105.8%。结论:该方法具有简便快速、准确灵敏、环保高效等优点,适用于水质分析中7种无机阴离子的同时快速测定。

    Abstract:

    Objective: To establish a method for the rapid determination of seven kinds of inorganic anions in water by high pressure ion chromatography(HPIC), including fluoride ion, chloride ion, bromide ion, nitrate ion, sulfate ion, chlorite ion and chlorate ion. Methods: Dionex Integrion high pressure ion chromatography and Ionpac AS19 analytical column were used. Under the conditions of KOH eluent concentration of 20 mmol/L and flow rate of 2.00 mL/min, the content of seven inorganic anions in water was determined by inhibition conductivity detector. Results: The results showed that seven kinds of inorganic anions could be separated within 7 min. The linear correlation coefficient of this method was ≥0.999, the relative standard deviation was less than 2%, and the recovery of seven kinds of inorganic anions were 95.3%~105.8%. Conclusion: This method has the advantages of simplicity, rapidity, accuracy, sensitivity, environmentally friendly and high efficiency, which was suitable for the rapid determination of seven inorganic anions in water quality analysis.

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李倩盈,黄少漫,陈景周,等.高压离子色谱法快速测定水中7种无机阴离子[J].食品与机械,2021,37(8):77-81.
LIQianying, HUANGShaoman, CHENJingzhou, et al. Rapid determination of seven inorganic anions in water by high pressure ion chromatography[J]. Food & Machinery,2021,37(8):77-81.

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  • 收稿日期:2021-05-08
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  • 在线发布日期: 2023-02-15
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