| ICP-MS测定重金属含量及其不确定度评价 |
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| 引用本文： | 邓桂春,贾丽娜,鞠政楠,吕改芳,叶琳琳.ICP-MS测定重金属含量及其不确定度评价[J].辽宁大学学报(自然科学版),2009,36(3):267-270. |
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| 作者姓名： | 邓桂春 贾丽娜 鞠政楠 吕改芳 叶琳琳 |
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| 作者单位： | 辽宁大学,化学学院,辽宁,沈阳,110036 |
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| 基金项目： | 辽宁省创新团队项目基金资助 |
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| 摘 要： | 采用ICP-MS测定了人发、蔬菜、洗发剂、奶粉中几种重金属含量,研究了不同的消解条件对测定重金属的影响.应用扩展不确定度和合成不确定度对实验过程中的质量称量、消解过程、溶液体积,实验的重现性等引起的不确定性进行评价,确定了样品中重金属含量的区间范围,各个元素测定结果的相对标准偏差均小于5%,标准加入法测得样品中各元素回收率在98.56%-99.82%之间.
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| 关 键 词： | ICP-MS 重金属 人发 蔬菜 牛奶 不确定度 |
Determination of Heavy Metal by ICP-MS and Its Evaluation of Measurement Uncertainty |
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| DENG Gui-chun,JIA Li-na,JU Zheng-nan,LV Gai-fang,YE Lin-lin.Determination of Heavy Metal by ICP-MS and Its Evaluation of Measurement Uncertainty[J].Journal of Liaoning University(Natural Sciences Edition),2009,36(3):267-270. |
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| Authors: | DENG Gui-chun JIA Li-na JU Zheng-nan LV Gai-fang YE Lin-lin |
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| Institution: | College of Chemistry;Liaoning University;Shenyang;China 110036 |
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| Abstract: | Study on effect of different digestion method for the determination of some heavy metals in human hair,green-stuff,milk-powder,shampoo by the ICP-MS.In terns of expanded uncertainty and combined standard uncertainty,to estimate the indeterminacy caused in weighing mass,digesting,solution volume,reappearance for the experiment process.So that,the region-limits of heavy metals content was confidence in samples,and measurement uncertainty of determination results on ICP-MS is estimated.The results indicate tha... |
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| Keywords: | ICP-MS |
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