岩矿测试2011，Vol.30Issue(3)：343-348,6.
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
Determination of Micro-amount and Trace Gold in Geological Samples by Chemical Vapor Generation-non-Dispersive Atomic Fluorescence Spectrometry
马建学 1路学东 1许卓1
作者信息
- 1. 中国人民武装警察部队黄金第一支队,黑龙江牡丹江,157021
- 折叠
摘要
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 to the determination of micro-amount and trace of gold in geological samples with high sensitivity, low detection limit (0. 23 ng/g), small matrix effect and rapid determination. The accuracy of the method was -0. 004 -0. 02 ( △lgC, n = 12) with precision of 2. 62％ - 8. 79％ ( RSD, n = 12). The results are in agreement with certified values of first grade national standard reference materials.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Key words
chemical vapor generation/ non-dispersive atomic fluorescence spectrometry/ sensitization reagent/ gold/thiourea resin引用本文复制引用
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):343-348,6.
