XRFS Determination of Major and Minor Components in V and Ti-Bearing Magnetite with Sample Preparation by Fusion
摘 要
应用X射线荧光光谱法测定了钒钛磁铁矿中主次量组分。0.200 0 g钒钛磁铁矿样品与6.000g混合溶剂(四硼酸锂与偏硼酸锂以质量比67比33混合)于1 050 ℃熔融,在熔样过程中添加20 mg碘化铵作为脱模剂。采用理论α系数校正基体效应。选用标准样品绘制校准曲线,各组分的检出限为2~84 μg·g-1。对同一样品重复测定12次,计算其相对标准偏差小于9%。应用所提出的方法分析CRM(BH 0101),所得测定值与认定值一致。
Abstract
Major and minor components in V and Ti-bearing magnetite were determined by XRFS. 0.200 0 g of sample was mixed with 6.000 g of a mixture of Li2B4O7 (a) and LiBO2 (b) with mixing ratio of ma to mb of 67 to 33, and fused at 1 050 ℃ with addition of 20 mg of NH4I as demoulding agent. Matrix effects were corrected by applying the theoratical α-coefficient. Calibration curves were prepared by using aset of standard samples. Detection limits of the 14 components were found in the range of 2-84 μg·g-1 .Values of RSD′s (n=12) found were less than 9%. In the analysis of a standard sample (BH 0101) by this method, results obtained were in consistency with the certified values.
中图分类号 O657.34
所属栏目 工作简报
基金项目 国土资源地质大调查项目科[2009]05-15-03
收稿日期 2012/8/21
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备注仵利萍(1977-),女,四川人,高级工程师,从事分析测试工作。
引用该论文: WU Li-ping,LIU Wei. XRFS Determination of Major and Minor Components in V and Ti-Bearing Magnetite with Sample Preparation by Fusion[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2013, 49(9): 1107~1109
仵利萍,刘卫. 熔融制样-X射线荧光光谱法测定钒钛磁铁矿中主次组分含量[J]. 理化检验-化学分册, 2013, 49(9): 1107~1109
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参考文献
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【3】李小青.X射线荧光光谱法测定铁矿石的化学成分[J].理化检验-化学分册, 2008,43(4):962-968.
【4】李小莉.X射线荧光光谱法测定铁矿中铁等多种元素[J].岩矿测试, 2006(6):229-231.
【5】罗立强,梁国立,马祖光.地质样品中岩石自动分类XRF研究[J].分析科学导报, 1996,1(3):189-193.
【6】葛良全,章晔.一种校正基体效应的方法[J].成都地质学院学报, 1990,17(4):118-125.
【7】TAO Guang-yi. XRF procedures for analysis of stan-dard reference materials[J]. X-Ray Spectrum, 1990,19:85-88.
【8】PELLA P A. Intercomparision of fundamental param-eter interelement correction methods-Part 2[J]. X-Ray Spectrum, 1986,15:251-258.
【9】马光祖.α系数法在XRF分析中的应用[J].理化检验-化学分册, 1983,19(4):28-29.
【10】刘永明,高祥琪.理论α系数法在X射线荧光光谱法分析钢铁成份中的应用[J].光谱实验室, 1996,13(3):8-12.
【11】谭秉和.X射线荧光光谱分析中基体效应的数学校正方法[J].光谱学与光谱分析, 1998,18(3):36-37.
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