| 悬浮体制样石墨炉原子吸收光谱法直接测定琥珀中微量镉 |
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| 引用本文： | 陈世忠,陆登波.悬浮体制样石墨炉原子吸收光谱法直接测定琥珀中微量镉[J].光谱学与光谱分析,2006,26(10):1928-1930. |
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| 作者姓名： | 陈世忠 陆登波 |
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| 作者单位： | 武汉工业学院重点实验室,湖北,武汉,430023 |
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| 摘 要： | 报道了以硝酸钯为基体改进剂,采用悬浮体制样石墨炉原子吸收光谱法直接测定琥珀中微量Cd的方法.研究了悬浮剂、试样粒度、基体改进剂、灰化/原子化温度和共存金属离子对分析信号的影响.在优化实验条件下,方法的检出限为9.4ng·g-1,相对标准偏差(RSD)为6.1%.
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| 关 键 词： | 石墨炉原子吸收光谱法 悬浮体制样 琥珀 硝酸钯 镉 |
| 文章编号： | 1000-0593（2006）10-1928-03 |
| 收稿时间： | 2005-08-10 |
| 修稿时间： | 2005-12-20 |
Slurry Sampling for Direct Determination of Trace Cadmium in Amber by Graphite Furnace Atomic Absorption Spectrometry |
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| CHEN Shi-zhong,LU Deng-bo.Slurry Sampling for Direct Determination of Trace Cadmium in Amber by Graphite Furnace Atomic Absorption Spectrometry[J].Spectroscopy and Spectral Analysis,2006,26(10):1928-1930. |
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| Authors: | CHEN Shi-zhong LU Deng-bo |
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| Institution: | Key Laboratory, Wuhan Polytechnic University, Wuhan 430023, China. |
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| Abstract: | A method for the direct determination of trace cadmium in amber by graphite furnace atomic absorption spectrometry (GFAAS) with slurry sampling was described. Palladium nitrate was used as a matrix modifier to eliminate the interference. Slurry stability and the influences of the matrix modifier, ashing/atomization temperature and coexistent ions on analytical signals were investigated in detail. Under the optimized experimental conditions, the detection limit of this method was 9.4 ng x g(-1) with a precision of 6.1%. |
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| Keywords: | Graphite furnace atomic absorption spectrometry Slurry sampling Palladium nitrate Amber Cadmium |
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