| 离子色谱法同时测定叶菜中的硝酸盐和亚硝酸盐 |
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| 引用本文： | 王群芳,罗文贱.离子色谱法同时测定叶菜中的硝酸盐和亚硝酸盐[J].化学分析计量,2002,11(2):7-8. |
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| 作者姓名： | 王群芳 罗文贱 |
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| 作者单位： | 1. 华南师范大学分析测试中心,广州,510631
2. 广东省农业科学院土壤肥料研究所,广州,510640 |
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| 摘 要： | 采用抑制型离子色谱法同时测定叶菜中的硝酸盐和亚硝酸盐的含量。色谱柱为Ionpac AS11柱，流动相为21mmol/L NaOH溶液，检测器为电导检测器（CD），流动相流速为1.0mL/min。该方法简便、快捷，准确度和灵敏度高，NO2^-和NO3^-的回收率分别为97％－105％和95％－104％，相对标准偏差RSD＜5．0％。同时考察了样品浸提时间对结果的影响。
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| 关 键 词： | 离子色谱法 硝酸盐 亚硝酸盐 叶菜 蔬菜 分析 测定 |
| 修稿时间： | 2001年12月30 |
SIMULTANEOUS DETERMINATION OF NITRATE AND NITRITE IN VEGETABLES BY ION CHROMATOGRAPHY |
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| Wang Qunfang.SIMULTANEOUS DETERMINATION OF NITRATE AND NITRITE IN VEGETABLES BY ION CHROMATOGRAPHY[J].Chemical Analysis And Meterage,2002,11(2):7-8. |
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| Authors: | Wang Qunfang |
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| Abstract: | Supressed ion chromatography was adopted in developing a method for simultaneous determination of NO3- and NO2- in vegetables. The ASll Ionpas column and the conductivity detector were used in this method. The mobile phase was consisted of 21 mmol NaOH with a flow rate of 1. Oml/min. The relative standard deviations for NO3- and NO2-, were less than 5 % . The recovery of NO3- and NO2- were 97% - 105% and 95% - 104% ,respectively. The method was proved to be fast and effective for simultaneous determination of NO3- and NO2- in vegetables. |
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| Keywords: | ion chromatography nitrate nitrite vegetable |
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