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    陈曦, 关清, 孙琦, 王政凯, 丁亮, 白雪涛, 林少彬. ICP-MS分析生活饮用水中稀土元素[J]. 环境卫生学杂志, 2015, 5(3): 267-271. DOI: 10.13421/j.cnki.hjwsxzz.2015.03.019
    引用本文: 陈曦, 关清, 孙琦, 王政凯, 丁亮, 白雪涛, 林少彬. ICP-MS分析生活饮用水中稀土元素[J]. 环境卫生学杂志, 2015, 5(3): 267-271. DOI: 10.13421/j.cnki.hjwsxzz.2015.03.019
    shu
    CHEN Xi, GUAN Qing, SUN Qi, WANG Zhengkai, DING Liang, BAI Xuetao, LIN Shaobin. Rare Earth Elements Analysis in Drinking Water by ICP-MS[J]. Journal of Environmental Hygiene, 2015, 5(3): 267-271. DOI: 10.13421/j.cnki.hjwsxzz.2015.03.019
    Citation: CHEN Xi, GUAN Qing, SUN Qi, WANG Zhengkai, DING Liang, BAI Xuetao, LIN Shaobin. Rare Earth Elements Analysis in Drinking Water by ICP-MS[J]. Journal of Environmental Hygiene, 2015, 5(3): 267-271. DOI: 10.13421/j.cnki.hjwsxzz.2015.03.019
    shu

    ICP-MS分析生活饮用水中稀土元素

    Rare Earth Elements Analysis in Drinking Water by ICP-MS

      摘要
    • 摘要: 目的 建立基于电感耦合等离子体质谱技术开展生活饮用水中稀土元素的定量分析方法, 采用本方法分析北京市城区部分末梢水稀土元素的含量。方法 采集饮用水样品, 用2% HNO3在线稀释处理, 对仪器条件进行优化, 选择合适的气体流量克服基体杂质对测试稳定性的影响, 选取Rh作为在线内标校正仪器漂移、基体效应等对测定结果的影响。在优化的条件下, 对实际饮水样品进行加标试验, 计算加标回收率。结果 测定稀土元素标准曲线的线性相关系数均优于0.9996, 各元素测定的方法检出限在0.002~0.12 μg/L间, 加标回收率在85.6%~114.4%间, 精密度小于10%。结论 该分析方法的准确性、稳定性良好, 直接进样测定, 操作简便、快速, 适用于生活饮用水中稀土元素定量分析。

       

      Abstract: Objective To explore the method of detecting rare earth elements (REEs) in drinking water with inductively coupled plasma mass spectrometry (ICP-MS), and to analyze the concentrations of REEs in tap water in urban Beijing. Methods The collected drinking water samples were diluted with 2% nitric acid; appropriate rate of gas flow was selected to overcome the influence of impurities on stability; while rhodium (Rh) was used as an online internal standard to conquer the impact of instrumental fluctuation and matrix effect. Under optimal parameters of instrumentation, the recovery rate was calculated by standard addition.Results The coefficient of linear correlation was above 0.9996 and the limit of detection was 0.002~0.12 μg/L, the recover was 85.6%~114.4% and the RSD was below 10%. Conclusion The method established in this study was accurate and stable, and was facilitated for analyzing REEs in drinking water conveniently and quickly.

       

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