| 石墨炉原子吸收光谱法测定植物样品中的痕量金 |
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| 引用本文： | 牛娜,何超君,刘敏,陈海英.石墨炉原子吸收光谱法测定植物样品中的痕量金[J].农业机械化与电气化,2009(1):86-88. |
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| 作者姓名： | 牛娜 何超君 刘敏 陈海英 |
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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; |
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| 摘 要： | 确立了植物样品在650℃灰化、用王水溶解、聚醚型聚氨酯泡沫塑料分离富集金、石墨炉原子吸收光谱法测定植物样品中痕量金的方法。对植物样品的灰化温度和分解方法进行试验研究并优化仪器条件。该方法灵敏度高，操作简单、快速。该方法的检出限为0．29ng/g，加标回收率为95％-105％，精密度试验表明其相对标准偏差分别为5．3％和7．4％。
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| 关 键 词： | 石墨炉原子吸收光谱法 植物样品 金 聚醚型聚氨酯泡沫塑料 痕量分析 |
Determination of Trace Gold in Plant Samples by Graphite Furnace Atomic Absorption Spectrometry |
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| Authors: | NIU Na HE Chaojun LIU Min CHEN Haiying |
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| Institution: | Ministry of Land and Resources;Shenyang Supervision and Test Center of Mineral Resources;Shenyang 110032;China |
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| Abstract: | A method for determination of trace gold in plan by graphite furnace atomic absorption spectrometry （GFAAS） after pre-concentration with polyether-based polyurethane foam was described. The conditions for sample decomposition, temperature of ashing and atomization in GFAAS determination were optimized. The detection limit was 0.29 ng/g, and the recovery of standard addition was 95%~ 104%. The precision test showed that the relative standard deviation of the method were 5.3% and 7.4% respectively. |
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| Keywords: | graphite furnace atomic absorption spectrometry plant sample gold polyether-based polyurethane foam trace analysis |
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