| 由BaSO4直接热分解制备用于同位素分析的SO2 |
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| 引用本文： | 潘曙兰,邵茂茸,海潮珍,霍卫国,姚御元. 由BaSO4直接热分解制备用于同位素分析的SO2[J]. 地质科学, 1981, 0(2): 184-189 |
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| 作者姓名： | 潘曙兰 邵茂茸 海潮珍 霍卫国 姚御元 |
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| 作者单位： | 中国科学院地质研究所 |
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| 摘 要： | 硫同位素地质研究工作中,经常遇到的研究对象是硫酸盐矿物。如何把这些硫酸盐矿物转化为适于质谱测定硫同位素组成的SO2气体,是我国硫同位素地质研究中急待建立的实验手段之一。 经典的方法中,可溶于水的硫酸盐,通常是先把它沉淀为BaSO4,然后通过一系列的化学反应转化为SO2。 七十年代初期,B.D.Holt等人提出直接加热分解BaSO4制备SO2的方法。
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| 收稿时间： | 1980-02-08 |
| 修稿时间： | 1980-02-08; |
THE METHOD FOR PREPARATING SO2 FOR ISOTOPE ANALYSIS FROM BaSO4 BY THERMAL DECOMPOSITION |
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| Pan Shulan,Shao Maorong,Hai Chaozhen,Huo Weiguo,Yao Yuyuan. THE METHOD FOR PREPARATING SO2 FOR ISOTOPE ANALYSIS FROM BaSO4 BY THERMAL DECOMPOSITION[J]. Chinese Journal of Geology, 1981, 0(2): 184-189 |
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| Authors: | Pan Shulan Shao Maorong Hai Chaozhen Huo Weiguo Yao Yuyuan |
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| Affiliation: | Institute of Geology, Academia Sinica, Beijing |
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| Abstract: | This paper describes our experiments carried out for direct decomposition of BaSO4 in order to get SO2.By using this method,we have made the analysis of over one hundred samples of BaSO4.The yield of SO2 on an average is 99% with a standard deviation of ±1%.Besides,a series of sulfides was transformed into sulfates by mixing it with Eseha mixture,then it precipitated as BaSO4.This procedure promised an uniformity of O18 abundance in SO2.The difference in δ34S between CuO-combustion method and thermodecomposition of BaSO4 is in range of 0.2‰.Our determination results of LTB-1,LTB-2 show its close agreement with that obtained in other laboratory and have a standard deviation of 0.1-0.2‰ |
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