| 高岭土中全硫量快速测定方法 |
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| 引用本文： | 王瑞斌.高岭土中全硫量快速测定方法[J].岩矿测试,2006,25(1):82-84. |
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| 作者姓名： | 王瑞斌 |
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| 作者单位： | 榆林学院化学与化学工程学院,陕西,榆林,719000 |
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| 基金项目： | 致谢：本文得到陕西师范大学化学与材料科学学院院长、博士生导师张成孝教授的指导,在此表示感谢. |
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| 摘 要： | 采用碳酸钠一氧化镁半熔融一氯化钡滴定法测定高岭土中的硫含量。试样用碱性熔荆半熔，熔块以水浸取，将转化为硫酸盐后的滤液，以玫瑰红酸钠为指示剂，在pH为5．5．7．0的条件下，用氯化钡标准溶液进行滴定。测定结果的RSD=2．47％（n=5），加标回收率为95．2％-100．3％。改进后的方法已用于高岭土中全硫量的测定，结果与国标重量法相符。
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| 关 键 词： | 硫 容量法 高岭土 半熔融 玫瑰红酸钠 氯化钡 |
| 文章编号： | 0254-5357（2006）01-0082-03 |
| 收稿时间： | 2005-10-17 |
| 修稿时间： | 2005-10-172005-12-15 |
Rapid Method for the Determination of Total Sulphur Content in Kaolin |
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| WANG Rui-bin.Rapid Method for the Determination of Total Sulphur Content in Kaolin[J].Rock and Mineral Analysis,2006,25(1):82-84. |
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| Authors: | WANG Rui-bin |
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| Institution: | School of Chemistry and Chemical Engineering, Yulin College, Yulin 719000,China |
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| Abstract: | A method for the determination of total sulphur content in kaolin samples by titrimetry was reported in this paper.Samples were semi-melted with Na_2CO_3+MgO.The melt was then soaked with water and the solution was filtered.Sulphur(in SO~(2-)_4 form) in the filtrate was titrated with BaCl_2 standard solution at pH 5.5~7.0 with sodium(rhodizonate) as indicator.The recovery of standard addition was 95.2%~100.3% with precision of 2.47% RSD(n=5).The method has been applied to the determination of total sulphur in kaolin samples and the results are in agreement with those provided by the national standard method(gravimetry). |
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| Keywords: | sulphur volumetry kaolin semi-melting sodium rhodizonate barium chloride |
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