| 化学蒸气发生-无色散原子荧光光谱法测定地质样品中微量和痕量金 |
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| 引用本文： | 马建学,路学东,许卓.化学蒸气发生-无色散原子荧光光谱法测定地质样品中微量和痕量金[J].岩矿测试,2011,30(3):343-348. |
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| 作者姓名： | 马建学 路学东 许卓 |
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| 作者单位： | 中国人民武装警察部队黄金第一支队,黑龙江牡丹江,157021 |
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| 摘 要： | 试样用王水分解,采用特定的金化学发生增敏试剂使金在硼氢化物-酸体系中产生挥发物质,将其导入原子荧光光谱检测系统,检测金的原子荧光信号。通过对仪器工作参数和化学蒸气发生参数的优化,使金的可检测信号同比提高20倍以上,同时降低共存离子对金的化学蒸气发生的干扰。对微量和痕量金的测定方法具有灵敏度高、检出限低、基体干扰少等优点。方法检出限为0.23 ng/g,准确度(ΔlgC,n=12)为-0.004~0.02,精密度(RSD,n=12)为2.62%~8.79%。经国家一级标准物质分析验证,测定值与标准值相符。
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| 关 键 词： | 化学蒸气发生 无色散原子荧光光谱法 增敏剂 金 硫脲树脂 |
| 收稿时间： | 2010/11/5 0:00:00 |
| 修稿时间： | 2010/12/28 0:00:00 |
Determination of Micro-amount and Trace Gold in Geological Samples by Chemical Vapor Generation-non-Dispersive Atomic Fluorescence Spectrometry |
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| MA Jian-xue,LU Xue-dong and XU Zhuo.Determination of Micro-amount and Trace Gold in Geological Samples by Chemical Vapor Generation-non-Dispersive Atomic Fluorescence Spectrometry[J].Rock and Mineral Analysis,2011,30(3):343-348. |
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| Authors: | MA Jian-xue LU Xue-dong and XU Zhuo |
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| Institution: | MA Jian-xue,LU Xue-dong,XU Zhuo(No.1 Gold Geological Detachment of CAPF,Mudanjiang 157021,China) |
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| Abstract: | Samples of gold were dissolved by aqua regia.Volatile substances were produced by using special gold sensitization reagent in boron hydrate-acid system and were loaded into atomic fluorescence spectrometry(AFS) to determine the gold atomic fluorescence signal.Signals were twenty times stronger than other methods after optimized the parameter of instrument and chemical vapor generation.Meanwhile,this method reduced interference of coexistent ions during chemical vapor generation.The method has been applied t... |
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| Keywords: | chemical vapor generation non-dispersive atomic fluorescence spectrometry sensitization reagent gold thiourea resin |
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