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X荧光光谱分析法测定含铬不定形耐火材料 被引量:4

Determination of Components in Chromium-Containing Refractory with X-Ray Fluorescence Spectrometry
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摘要 含铬耐火材料中的SiO2,Al2O3,Fe2O3,TiO2,CaO,MgO和Cr2O3等直接影响着产品质量,属于需控制成分。文章用市售耐火材料标准品和基准试剂配制出适当含量范围且有一定梯度的系列标准样,以四硼酸锂-偏硼酸锂(质量比67∶33)作熔剂、熔样过程中添加碘化铵固体脱模剂的方法制备样品玻璃熔片,通过X射线荧光光谱法(XRF)测定元素的荧光强度,并以理论α系数基体校正法消除吸收与增强效应,从而得到测量上述组分的定量校正曲线。该方法应用于耐火材料标准品的测定,所得结果与标准值吻合。应用于实际样品的测定并和化学法比较,结果准确,精密度好,操作简单、快速,具有良好的实用性。 Components like SiO2, Al2O3, Fe2O3, CaO, MgO and Cr2O3 dominate the performance of chromium-containing amorphous refractory. That's still a hard task for product evaluation and quality control for amorphous refractory due to various component content, less available standard product and difficulty in fusion bead preparation. In the present study, series calibration standards were made from reagents and marked standards depend upon the content of components in real samples. The fusion bead was prepared with lithium tetraborate-lithium metaborate (67 : 33 by weight) as mixed flux and ammonium iodide as release agent, which was added during fusion process. The calibration curve derivated from the relationship between light intensity and components concentration and calibrated by theoretical α coefficient. The results of measurement were consistent with standard by this newly developed method. And good precision was also achieved in determination of real amorphous samples. It is easy in operation with less time spent, and practical in application.
出处 《光谱学与光谱分析》 SCIE EI CAS CSCD 北大核心 2011年第10期2851-2855,共5页 Spectroscopy and Spectral Analysis
基金 国家自然科学基金项目(21076063)资助
关键词 含铬不定形耐火材料 玻璃熔片 X射线荧光光谱法 Amorphous refractory Chromium Fusion bead X-ray fluorescence
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  • 1The Group of Refractory Standard Collection(耐火材料标准汇编组编). Collection of Refractory Standard(耐火材料标准汇编). Beijing: The Standard Press of China(北京:中国标准出版社), 2003. 523.
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  • 7宋祖峰,阚斌,陈健.镁铝铬质耐火材料的X射线荧光光谱分析[J].理化检验(化学分册),2005,41(9):648-650. 被引量:17
  • 8陆晓明,邰力,金德龙.X射线荧光光谱法分析镁铬耐火材料[J].耐火材料,2006,40(3):231-233. 被引量:8

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