| X射线荧光光谱定量分析中超轻元素的处理方法 |
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| 引用本文： | 卓尚军,陶光仪,殷之文,吉昂. X射线荧光光谱定量分析中超轻元素的处理方法[J]. 化学学报, 1999, 57(12): 1348-1351 |
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| 作者姓名： | 卓尚军 陶光仪 殷之文 吉昂 |
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| 作者单位： | 中国科学院上海硅酸盐研究所,上海,200050 |
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| 摘 要： | 探讨了X射线荧光光谱定量分析中超轻元素的处理方法。在用deJongh-Norrish方程进行定量分析时,对通常不能用X射线荧光光谱直接测定的超轻元素作为消去组分处理以计算理论α系数,然后再以100%减去测量组分和已知组分浓度总和的方法来获得较为准确的分析结果。用此法分析了铌酸钾锂晶体中的Li~2O和两种含硼玻璃中的B~2O~3,分别得到了与等离子体发射光谱法和化学滴定法相符的结果,其中B~2O~3的结果优于文献报道的散射系数法和直接测定法的结果。
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| 关 键 词： | Ｘ射线荧光光谱法 定量分析 超氢元素 铌酸钾锂 氧化锂 氧化硼 |
| 修稿时间： | 1998-12-28 |
Treatment of ultra-light elements in quantitative X-ray fluorescene spectrum analysis |
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| ZHUO Shang-Jun,TAO Guang-Yi,YIN Zhi-Wen,JI Ang. Treatment of ultra-light elements in quantitative X-ray fluorescene spectrum analysis[J]. Acta Chimica Sinica, 1999, 57(12): 1348-1351 |
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| Authors: | ZHUO Shang-Jun TAO Guang-Yi YIN Zhi-Wen JI Ang |
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| Affiliation: | Shanghai Inst Ceram., CAS.Shanghai(200050) |
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| Abstract: | A method for the treatment of ultra - light elements which cannot be accurately measured directly by X - ray fluorescence analysis has been established. Treating an ultra - light element as the elimination component in the de Jongh - Norrish equation during the calculation of theoretical a coefficients and then as balance component when analyzing the unknown element, it is possible to obtain reasonable results for ultra - light element components. Li2O in lithium potassium niobate crystals and B2O3 in two types of glass were determined by this method. The results agree with those by ICP - AES and chemical titration respectively. |
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| Keywords: | X - ray fluorescence spectrometry quantitative analysis ultra - light elements |
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