车载台式能量色散X射线荧光光谱仪在地球化学勘查现场分析中的应用

樊兴涛; 李迎春; 王广; 白金峰; 姚文生; 袁继海; 詹秀春

车载台式能量色散X射线荧光光谱仪在地球化学勘查现场分析中的应用

1.
国家地质实验测试中心, 北京 100037
2.
国家地质实验测试中心, 北京 100037
3.
国家地质实验测试中心, 北京 100037
4.
中国地质科学院地球物理地球化学勘查研究所, 河北廊坊 065000
5.
中国地质科学院地球物理地球化学勘查研究所, 河北廊坊 065000
6.
国家地质实验测试中心, 北京 100037
7.
国家地质实验测试中心, 北京 100037

基金项目:

国家地质实验测试中心基本科研业务费项目资助(2009CSJ01)

国家高技术研究发展计划(863计划)项目资助(2006AA06Z135)

国土资源地质大调查项目资助(1212010816027)

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出版历程
- 收稿日期: 2009-03-18
- 修回日期: 2010-10-24

On-site Geochemical Exploration Analysis by Vehicle-Loaded Energy Dispersive X-ray Fluorescence Spectrometer

1.
National Research Center for Geoanalysis, Beijing 100037, China
2.
National Research Center for Geoanalysis, Beijing 100037, China
3.
National Research Center for Geoanalysis, Beijing 100037, China
4.
Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China
5.
Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China
6.
National Research Center for Geoanalysis, Beijing 100037, China
7.
National Research Center for Geoanalysis, Beijing 100037, China

摘要

摘要: 充分发挥小型实验室设备的功能以提高现场快速分析的能力。在内蒙和新疆两地覆盖区的钻探现场,采用车载化台式偏振能量色散X射线荧光光谱仪,对由轻便钻采集的覆盖层和基岩样品进行了贱金属分析。共采集、制备和分析了约400件钻探样品,采用能量色散X射线荧光光谱法、波长色散X射线荧光光谱法和电感耦合等离子体质谱法对这些样品进行比对分析。现场分析数据与实验室分析数据(各方法的平均值)的比对结果表明,K、Ca、Ti、V、Cr、Mn、Fe、Ni、Cu、Zn、Ga、As、Rb、Sr、Y、Zr、Nb、Ba、Pb、Th 等20余种元素的分析数据的一致性良好;含量超过10 μg/g时,除了V和Ba外,其他元素的平均相对偏差均小于25%。在现场作为质控样品分析4个地质标准物质GBW 07301~GBW 07304,测定结果表明,除了低含量的Cu和Ga外,上述其他18种元素均符合地质行业标准地质矿产实验室测试质量管理规范(1∶20万)规定的误差要求。应用研究表明,设计的仪器车载化方案可行,现场分析方法快速、准确,适用于野外钻探、化探等急需现场数据支持的工作。
- 现场分析 /
- 能量色散X射线荧光光谱仪 /
- 地球化学勘查
Abstract: The vehicle-loaded energy dispersive X-ray fluorescence(EDXRF) spectrometry instruments were utilized for on-site analysis of superstratum and bedrock samples from light drilling at drilling fields in Inner Mongolia and Xinjiang. About 400 drilling samples were collected, prepared and analyzed on-site. The on-site EDXRF data were assessed by comparing with in-lab data obtained from the same samples by wavelength dispersive X-ray fluorescence spectrometry instruments and ICP-MS. Good consistencies were found between on-site and laboratory analysis data (the average of the various methods) for K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Ga, As, Rb, Sr, Y, Zr, Nb, Ba, Pb and Th. As long as concentration levels exceeded 10 μg/g, average relative deviations better than 25% were achieved for all of the above-mentioned elements except for V and Ba. Smaller relative deviations were achieved with increasing elemental concentrations. On-site analysis data of the 18 above-mentioned elements in geological reference materials GBW 07301-GBW 07304 were in good accordance with the specification of testing quality management for geological laboratories (1∶200000), except for Cu and Ga which were low in concentrations. The applied research results show that the vehicle-loaded instrument works properly and the on-site analysis method is rapidity, accurate and suitable for field drilling and geochemical exploration.
- on-site /
- analysis /
- energy

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参考文献(18)

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车载台式能量色散X射线荧光光谱仪在地球化学勘查现场分析中的应用

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出版历程

On-site Geochemical Exploration Analysis by Vehicle-Loaded Energy Dispersive X-ray Fluorescence Spectrometer

计量

出版历程

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