【引用本文】 李大勇, 朱志雄, 李靖, 等. X射线荧光光谱半定量分析高烧失量矿物的准确度研究[J]. 岩矿测试, 2020, 39(1): 135-142. doi: 10.15898/j.cnki.11-2131/td.201903080034
LI Da-yong , ZHU Zhi-xiong , LI Jing , et al. Accuracy Research of Minerals with High Loss of Ignition during X-ray Fluorescence Spectrometry Semi-quantitative Analysis[J]. Rock and Mineral Analysis, 2020, 39(1): 135-142. doi: 10.15898/j.cnki.11-2131/td.201903080034

X射线荧光光谱半定量分析高烧失量矿物的准确度研究

贵州省地质矿产中心实验室, 贵州 贵阳 550018

收稿日期: 2019-03-08  修回日期: 2019-07-05 

基金项目: 贵州省地质矿产勘查开发局科研项目(35号黔地矿科合[2017]35号)

作者简介: 李大勇,高级工程师,长期从事化学分析及X射线荧光光谱分析工作。E-mail:48304206@qq.com。。

通信作者:

Accuracy Research of Minerals with High Loss of Ignition during X-ray Fluorescence Spectrometry Semi-quantitative Analysis

Guizhou Central Laboratory of Geology and Mineral Resources, Guiyang 550018, China

Corresponding author: ZHU Zhi-xiong , 长期从事分析技术及质量管理工作。2366635624@qq.com。

Received Date: 2019-03-08
Revised Date: 2019-07-05

摘要:应用X射线荧光光谱半定量分析软件(SQX)分析未知样品时,SQX软件可对样品中的9F~92U元素进行半定量分析,而对H2O、C这些参数不能直接测定。对于烧失量和结晶水含量较高的铝土矿,CO2含量较高的碳酸盐矿物,硫碳含量较高的硫化物金属矿等类样品,平衡归一化计算时,未测定参数对样品中的Al2O3、SiO2、CaO、MgO、Fe等主要元素分析结果影响较大,半定量分析数据的准确度较低。本文通过试验研究,提出了一个新的校正模式。该校正模式根据XRF半定量分析初步结果,选择性地对未知样品中的烧失量、结晶水、二氧化碳、硫等参数进行化学定量分析,将化学定量分析结果输入SQX,二次平衡归一计算得出新的半定量分析结果。实验结果表明,使用该校正模式分析铝土矿、碳酸盐矿物、硫化物金属矿中多元素的平均准确度提高了2.6~4.5倍。本方法可快速、较为准确地测定铝土矿、碳酸盐矿物、硫化物金属矿等高烧失量矿物中的多元素。

关键词: 铝土矿, 碳酸盐矿物, 硫化物金属矿, X射线荧光光谱法, 半定量

Accuracy Research of Minerals with High Loss of Ignition during X-ray Fluorescence Spectrometry Semi-quantitative Analysis

KEY WORDS: bauxite, carbonate minerals, sulfide metal ore, X-ray fluorescence spectrometry, semi-quantitation

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X射线荧光光谱半定量分析高烧失量矿物的准确度研究

李大勇, 朱志雄, 李靖, 王亮