| 石墨炉原子吸收光谱法测定岩石和土壤中痕量镉 |
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| 引用本文： | 邵文军,张激光,刘晶晶.石墨炉原子吸收光谱法测定岩石和土壤中痕量镉[J].岩矿测试,2008,27(4):310-312. |
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| 作者姓名： | 邵文军 张激光 刘晶晶 |
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| 作者单位： | 国土资源部沈阳矿产资源监督检测中心,辽宁,沈阳,110032 |
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| 基金项目： | 国土资源部地质人调查项目资助 |
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| 摘 要： | 试样用王水、高氯酸分解。在高氯酸介质中,不经分离富集,无需添加任何基体改进剂,用石墨炉原子吸收光谱法直接测定岩石和土壤样品中的痕量镉。对试样分解、灰化和原子化温度进行了选择,优化了仪器工作条件。方法检出限为0.0066μg/g,精密度(RSD,n=12)低于8.0%。方法简单、快速、准确,适用于大批量岩石和土壤样品中痕量镉的分析。
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| 关 键 词： | 石墨炉原子吸收光谱法 镉 岩石 土壤 |
Determination of Trace Cadmium in Rock and Soil Samples by Graphite Furnace Atomic Absorption Spectrometry |
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| SHAO Wen jun,ZHANG Ji guang,LIU Jing jing.Determination of Trace Cadmium in Rock and Soil Samples by Graphite Furnace Atomic Absorption Spectrometry[J].Rock and Mineral Analysis,2008,27(4):310-312. |
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| Authors: | SHAO Wen jun ZHANG Ji guang LIU Jing jing |
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| Institution: | (Shenyang Testing and Quality Supervision Center for Geological and Mineral Products,The Ministry of Land and Resources,Shenyang 110032,China) |
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| Abstract: | A method for the determination of trace cadmium in rock and soil samples by graphite furnace atomic absorption spectrometry(GFAAS) was developed.The samples were decomposed by aqua regia-perchloric acid,and trace cadmium in perchloric acid medium was then directly determined by GFAAS without any separation,pre-concentration and without any matrix modifier.The conditions for sample decomposition,temperature of ashing and atomization in GFAAS determination were optimized.The detection limit of the method for cadmium is 0.0066 μg/g with precision of less than 8.0%RSD(n=12).The method provides the advantages of simple operation,high efficiency,accuracy,and suitable for the determination of trace cadmium in bulk rock and soil samples. |
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| Keywords: | graphite furnace atomic absorption spectrometry(GFAAS) cadmium rock soil |
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