| 非抑制型离子色谱法检测矿泉水中硅酸盐 |
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| 引用本文： | 刘肖,蔡亚岐,刘京生,牟世芬.非抑制型离子色谱法检测矿泉水中硅酸盐[J].净水技术,2006,25(5):69-71. |
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| 作者姓名： | 刘肖 蔡亚岐 刘京生 牟世芬 |
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| 作者单位： | 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 |
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| 基金项目： | 国家重点基础研究发展计划(973计划);国家自然科学基金;中国科学院科研项目 |
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| 摘 要： | 该文介绍了一种采用阴离子色谱交换柱进行分离，非抑制型电导离子色谱法检测，直接进样测定矿泉水中硅酸盐（偏硅酸）含量的方法。选择的色谱条件为：氢氧化物选择性的IonPac AS11-HC阴离子交换柱，淋洗液自动发生装置在线产生KOH梯度淋洗，非抑制型电导检测。样品无需任何前处理直接进样。此方法具有选择性好，操作简单，适用性广，节省时间，对环境友好等特点，用于实际样品测定，所得结果令人满意。
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| 关 键 词： | 离子色谱 硅酸盐 非抑制型电导检测 矿泉水 |
| 收稿时间： | 2005-11-14 |
| 修稿时间： | 2005-11-14 |
Determination of Silicate in Mineral Waters by Non-Suppressed Ion Chromatography |
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| Liu Xiao,Cai Yaqi,Liu Jingsheng,Mou Shifen.Determination of Silicate in Mineral Waters by Non-Suppressed Ion Chromatography[J].Water Purifcation Technology,2006,25(5):69-71. |
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| Authors: | Liu Xiao Cai Yaqi Liu Jingsheng Mou Shifen |
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| Affiliation: | State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Enviromental Science, Chinese Academy of Sciences,Beijing 100085,China |
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| Abstract: | This paper introduced a method in which samples were directly injected and followed by separating analytes by ion Chromatography and detecting silicate in mineral waters by non-Suppressed conductivity detector. The separation of silicate was obtained by IonPac AS11-HC column which is a hydroxyl selective column, and KOH gradient eluent obtained by Eluent Generator was selected. In analysis of a standard solution of silicate of 25 mg/L, the relative standard deviations of retention time, peak and height of chrematogram obtained were 0.18% ,0.94% and 0.82% respectively. In standard solution addition analysis, a recovery rate obtained was 92%-106% when 25mg/L or 2mg/L were added to water samples with concentrations of silicate around 25 mg/L or 2.5mg/L. |
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| Keywords: | ion chromatography silicate non-suppressed conductivity detection mineral water |
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