| ICP-MS 法直接测定冰芯样品中超痕量镉 |
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| 引用本文： | 李月芳,唐富荣.ICP-MS 法直接测定冰芯样品中超痕量镉[J].分析试验室,2001,20(3):25-27. |
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| 作者姓名： | 李月芳 唐富荣 |
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| 作者单位： | 中国科学院寒区旱区环境与工程研究所冰芯与寒区环境研究开放实验室!兰州730000 |
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| 基金项目： | 国家自然科学基金 !(4 980 1 0 0 4 )，国家重点基础研究发展规划 !(G1 9980 4 0 80 0 )，中国科学院知识创新工程项目!(KZCX1 -1 0 -0 |
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| 摘 要： | 采用 ICP- MS法对冰芯样品中超痕量 Cd的直接测定进行了研究。确定了直接测定浓度为 pg/m L 级的 Cd的最佳仪器参数、载气流速、进样速度等与灵敏度之间的关系以及浓度和扫描参数对分析精度的影响。本方法对浓度 5～2 0 0 pg/m L Cd的分析 ,RSD<1 0 % ,回收率在 88%～ 1 0 5%之间 ,检测限为0 .1 5pg/m L
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| 关 键 词： | ICP-MS 镉 冰芯 |
| 文章编号： | 1000-0720(2001)03-0025-03 |
| 修稿时间： | 2000年6月12日 |
Direct determination of Cd in ice core samples by ICP-MS |
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| LI Yue-fang,TANG Fu-rong.Direct determination of Cd in ice core samples by ICP-MS[J].Chinese Journal of Analysis Laboratory,2001,20(3):25-27. |
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| Authors: | LI Yue-fang TANG Fu-rong |
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| Abstract: | A new method for determination of trace Cd in ice core samples by ICP-MS was developed. The analysis parameters for measuring Cd was optimized. The relationship of sensitivity with flow rate of sample gas and auxilliary gas were studied. The influence of concentrations and scan parameters on analysis precision were also studied. The precision(RSD) is less 10%, corresponding to the concentration range of 5～200 pg/mL. The recovery from standard solutions is in the range of 88%～105%. The detection limit is 0.15 pg/mL. |
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| Keywords: | Trace Cd Ice core samples ICP MS |
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