| Z-2000石墨炉原子吸收光谱法测定化探样品中的痕量金 |
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| 引用本文： | 刘涛,李念占,李君强,刘玖芬,谢璐.Z-2000石墨炉原子吸收光谱法测定化探样品中的痕量金[J].黄金科学技术,2009,17(1):53-55. |
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| 作者姓名： | 刘涛 李念占 李君强 刘玖芬 谢璐 |
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| 作者单位： | 1. 武警黄金第七支队,山东,烟台,264004
2. 烟台黄金设计院,山东,烟台,264004 |
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| 摘 要： | 使用泡沫塑料富集金,经硫脲解脱,采用斜坡升温模式和热解涂层石墨管,经管壁原子化,分析测定化探样品中的痕量金,讨论不同曲线对测定结果的影响。通过标准回收实验和不同分析方法结果对照及对国家一级标准物质的分析测定,表明该方法具有良好的准确度和精密度,方法检出限为0.1×10-9,方法回收率在97%～106%之间,精密度(RSD,n=12)为3%～11% ,满足1∶5万化探样品中痕量金的分析要求。
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| 关 键 词： | Z-2000石墨炉 原子吸收光谱法 痕量金 泡沫塑料 化探样品 |
| 收稿时间： | 2008-08-21 |
Determination of Trace Gold in Geochemical Sample by Z-2000 GFAAS |
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| LIU Tao,LI Nianzhan,LI Junqiang,LIU Jiufen,XIE Lu.Determination of Trace Gold in Geochemical Sample by Z-2000 GFAAS[J].Gold Science and Technololgy,2009,17(1):53-55. |
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| Authors: | LIU Tao LI Nianzhan LI Junqiang LIU Jiufen XIE Lu |
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| Affiliation: | LIU Tao1,LI Nianzhan2,LI Junqiang1,LIU Jiufen1,XIE Lu11.No.7 Gold Geological Party of CAPF,Yantai 264004,Sh,ong,China,2.The Gold Design Institute of Yantai |
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| Abstract: | Trace gold is concentrated with foam plastics, by extrication of sulfur thiourea solution, using the technology of slope-heating and pyrolytic coated graphite tube formeasure trace gold by Z-2000 graphite furnace atomic absorption spectrometry(GFAAS),we discuss the influences of standard curve and working curve on the determination result.By standard recovery experiment,variousmethods compare and determination of the first class national standard materials,the detection limit of the method is 0.1×10-9,the recovery rate is 96%～110% and the p recision is 3%～11%,which satisfy analysis requirements of trace gold in 1∶50 000 geochemical sample. |
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| Keywords: | Z-2000 graphite furnace Atomic absorption spectrometry Trace gold Foam plastics Geochemical samples |
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