粉末压片制样-波长色散X射线荧光光谱法测定斑岩型钼铜矿中主次量元素钼铜铅锌砷镍硫

夏鹏超; 李明礼; 王祝; 李代琼; 胡亚燕

粉末压片制样-波长色散X射线荧光光谱法测定斑岩型钼铜矿中主次量元素钼铜铅锌砷镍硫

1.
西藏自治区地质矿产勘查开发局中心实验室, 西藏拉萨 850033
2.
西藏自治区地质矿产勘查开发局中心实验室, 西藏拉萨 850033
3.
西藏自治区地质矿产勘查开发局中心实验室, 西藏拉萨 850033
4.
西藏自治区地质矿产勘查开发局中心实验室, 西藏拉萨 850033
5.
西藏自治区地质矿产勘查开发局中心实验室, 西藏拉萨 850033

基金项目:

中国地质大调查项目(1212011120272)

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出版历程
- 收稿日期: 2011-12-20
- 修回日期: 2012-02-17

Determination of Major and Minor Elements of Mo, Cu, Pb, Zn, As, Ni and S in the Porphyry Type Lindgrenite by Wavelength Dispersive X-ray Fluorescence Spectrometry with Pressed-powder Pellets

1.
Central Laboratory of Bureau of Geology and Exploration Tibet, Lhasa 850033, China
2.
Central Laboratory of Bureau of Geology and Exploration Tibet, Lhasa 850033, China
3.
Central Laboratory of Bureau of Geology and Exploration Tibet, Lhasa 850033, China
4.
Central Laboratory of Bureau of Geology and Exploration Tibet, Lhasa 850033, China
5.
Central Laboratory of Bureau of Geology and Exploration Tibet, Lhasa 850033, China

摘要

摘要: 采用粉末压片制样,波长色散X射线荧光光谱法测定西藏某斑岩型钼铜矿中7个主次量元素Mo、Cu、Pb、Zn、As、Ni、S。选择钼矿石、铜矿石国家标准物质及自配标准物质建立工作曲线,使用康普顿散射线作内标,同时采用经验系数法校正基体效应及粒度效应。方法经国家标准物质、自配标准参考物质验证,测定值与标准值吻合,方法分析精密度(RSD,n=12)小于2.18%,与化学法相比,样品不需进行化学前处理,操作简单、快速、准确度高、精密度好,能满足钼铜矿的实际分析需要。利用国家标准物质配制合成了7个校准标准样品,有效地解决了方法建立过程中标准样品种类和数量不足的问题。
- 钼铜矿 /
- 主次量元素 /
- 粉末压片 /
- 波长色散X射线荧光光谱法
Abstract: A method has been developed for the determination of Mo, Cu, Pb, Zn, Ni, As and S in porphyry type lindgrenite from Tibet by Wavelength Dispersive X-ray Fluorescence Spectrometry with pressed powder pellets. The national standard reference materials of molybdenum ore and copper ore, as well as self-synthesized reference materials were used to build the working curve. Using Compton correction as the internal standard, the matrix effect and particle size effect was corrected by empirical coefficients. According to the verification by the national standard reference materials and self-synthesized reference materials, the analytical results were in good agreement with certified values. The relative standard deviation RSD (n=12) of this method was less than 2.18% for all of the elements. Compared with classical chemical methods, this method was simple, fast and highly accurate and provided precision without chemical pretreatment. It is suitable for practical determination of lindgrenite samples. Seven calibration samples were synthesized by the national standard reference materials which solved the problem of lack of calibration samples.
- lindgrenite /
- major /
- and /
- minor