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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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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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 SO₄^2- were 1.8, 12.3 and 3.8% respectively.

出版日期: 1989-02-24

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.
Zhou Liyi, Wang Fang, Su Jin. THE SIMULTANEOUS DETERMINATION OF FLUORINE,CHLORINE AND SULFUR IN GEOLOGICAL MATERIALSBY MEANS OF PYROHYDROLYSIS-IONCHROMATOGRAPHY. Geophysical and Geochemical Exploration, 1989, 13(1): 61-65.

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