| 等离子体质谱测定干扰及动态反应池应用——天然物料中痕量Al,As,Cr,Fe,Zn,Mn,Se测定 |
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| 引用本文： | 李展强,杨晓艳,李海萍,李其英.等离子体质谱测定干扰及动态反应池应用——天然物料中痕量Al,As,Cr,Fe,Zn,Mn,Se测定[J].现代仪器,2010,16(1). |
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| 作者姓名： | 李展强 杨晓艳 李海萍 李其英 |
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| 作者单位： | 国土资源部广州矿产资源监督检测中心,广州,510080 |
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| 摘 要： | 本文针对电感耦合质谱法(ICP-MS)测定天然物料(水、土壤、植物)中痕量元素Al含量时产生的干扰问题,研究采用动态反应池(DRC)技术,选择甲烷(CH_4)作为反应气体,设定合适的仪器工作参数,使得CeO/Ce<2.5%,Ba~(++)<2.5%,220amu<1.0,以及选择测定元素的同位素相结合的方法消除干扰。实验结果表明,方法灵敏度和精密度(RSD%)不会降低,与标准模式一致,线性相关>0.999,标淮加入回收率85%～110%。
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| 关 键 词： | ICP-MS 质谱干扰 动态反应池 甲烷 |
Determination interference and DRC application of ICP-MS——Determination the content of trace elements,such as Al,As,Cr,Fe,Zn,Mn and Se,in nature material |
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| Li Zhanqiang,Yang xiaoyan,Li Haiping,Li Qiying.Determination interference and DRC application of ICP-MS——Determination the content of trace elements,such as Al,As,Cr,Fe,Zn,Mn and Se,in nature material[J].Modern Instruments,2010,16(1). |
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| Authors: | Li Zhanqiang Yang xiaoyan Li Haiping Li Qiying |
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| Abstract: | When determinating the content of these trace elements,such as Al,As,Cr,Fe,Zn,Mn and Se,in nature material (water,soil and plant),it would bring about some interference..The article researched how to eliminate these interference by Using the DRC technology,methane as the reactant gas,setting the appropriate parameter of apparatus which made CeO/Ce<2.5%,Ba~(++)<2.5% and 220amu<1.0,and determinating the isotope of elements. The results showed that sensitivity and precision of this method was the same as standard mode,R>0.999, and the rate of recovery between 85% to 110%. |
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| Keywords: | ICP-MS |
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