| 热水解-离子色谱法连续测定地质物料中的氟、氯和硫 |
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| 引用本文： | 周丽沂,王芳,苏瑾.热水解-离子色谱法连续测定地质物料中的氟、氯和硫[J].物探与化探,1989,13(1):61-65. |
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| 作者姓名： | 周丽沂 王芳 苏瑾 |
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| 作者单位： | 地矿部物化探研究所 |
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| 摘 要： | 研究报导了一种快速、高效和无干扰地测定地质物料中氟、氯和硫的热水解离子色谱方法。自行设计和组装了热水解装置。实验研究和选择了热水解条件、离子色谱测定的最佳工作状态,从而获得了准确可靠的结果。用本法对10个地球化学标准参考样(GSR-3,6;GSS-1,3,6,8;GSD-11,12)进行分析测定,其结果与这些标样的最佳估计值和推荐值非常一致。该方法的检出限分别为:氟6.6ppm;氯30.8ppm;硫酸根36.8ppm。方法的精密度(RSD,%)对氟含量为577ppm,氯含量为70ppm和硫酸根含量为420ppm的样品来说,分别为1.8%,12.3%和3.8%。
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| 关 键 词： | 地质物料 氟 氯 硫 测定 |
THE SIMULTANEOUS DETERMINATION OF FLUORINE,CHLORINE AND SULFUR IN GEOLOGICAL MATERIALSBY MEANS OF PYROHYDROLYSIS-IONCHROMATOGRAPHY |
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| Institution: | Institute of Exploration Geophysics and Geochemistry, Ministry of Geology and Mineral Resources |
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| Abstract: | A rapid, efficient and interference-free method for simultaneous determi nation of fluorine, chlorine and sulfur in geological materials by means of pyrohydrolysis-ion chromatography is described. A set of pyrohydrolysis devices was designed and assembled. Accuracy of the method was evaluated through the analysis of 10 geochemical standard reference samples (GSR-3, 65 GSS-1, 3, 6, 8; GSD-11, 12) and was found to be in good agreement with the certified or recommended values. The detection limits of F-, Cl- and SO42-were 6.6, 30.8 and 36.8 ppm respectively, and the precisions (RSD, %) for samples containing 577 ppm F-, 70 ppm Cl- and 420 ppm SO42- were 1.8, 12.3 and 3.8% respectively. |
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