含硫重钙中总硫含量的测定

Yunnan Chemical Technology(2019)

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Abstract
开发了两步法测定含硫重钙中总硫的方法.用盐酸溶解样品中的硫酸盐,玻璃砂芯坩埚过滤后,滤液用硫酸钡重量法测定硫酸盐含量.滤渣用硫饱和丙酮溶出干扰物质,再以二硫化碳溶出单质硫,通过减量法测定单质硫.结果显示,运用此方法对实验样品多次平行测定的相对标准偏差分别在2.30%~2.81%和1.09%~1.23%,回收率分别在96.8%~102.5%和98.7%~103.0%.
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