岩矿测试2009，Vol.28Issue(6)：587-589,3.
三乙醇胺增敏火焰原子吸收光谱法测定地质样品中的钼
Determination of Molybdenum in Geological Samples by Triethanolamine Sensitizer-Air Acetylene Flame Atomic Absorption Spectrometry
黄仁忠1
作者信息
- 1. 环闽矿业有限公司,福建,福州,350008
- 折叠
摘要
Abstract
The geological sample was decomposed by aqua regia and suitable amount of triethanolamine (TEA) sensitizer was added in the sample solution. Molybdenum in the sample was then determined by air-acetylene flame atomic absorption spectrometry. The dosage of triethanolamine was optimized through experiments. The characteristic concentration of molybdenum in four different kinds of media including HCl-H_3PO_4-AlCl_3, HCl-TEA, HCl-TEA-H_3PO_4 and HCl-TEA-H_3PO_4-AlCl_3 was investigated. The results showed that in the HCl-TEA-H_3PO_4-AlCl_3 medium, a wide dynamic linear range was obtained with Mo concentration up to 40 μg/mL. The detection limit of this method is 0.2 mg/L for Mo. The recovery of standard addition is 96%～102% with precision of 5.6% RSD (n=6). The method has been applied to the determination of Mo in national primary standard reference materials and the results are in good agreement with the certified values.关键词
三乙醇胺/火焰原子吸收光谱法/钼/地质样品Key words
triethanolamine/ flame atomic absorption spectrometry/ molybdenum/ geological sample分类
化学化工引用本文复制引用
黄仁忠..三乙醇胺增敏火焰原子吸收光谱法测定地质样品中的钼[J].岩矿测试,2009,28(6):587-589,3.
