燃烧滴定法快速测定碳酸钡中的硫  

Rapid determination of sulfur in barium carbonate by combustion titration method

作　　者：孙士坤[1] 郭兰疃[1] 陈英军[1] 

机构地区：[1]河北辛集化工集团,河北辛集052360

出　　处：《无机盐工业》2007年第9期55-56,共2页Inorganic Chemicals Industry

摘　　要：采用燃烧滴定法测定碳酸钡中硫含量,并对样品作测定前的预处理。在测定中选用复合型助熔剂,既可使样品高温燃烧,又可避免因氧气流的作用而导致样品喷溅的问题。该方法准确测定硫的质量分数范围0.000 1%～10%,回收率95.2%～102.2%,相对标准偏差(RSD)为0.89%～2.31%,操作简单快速,方法准确可靠,满足测定要求。The combustion titration method was adopted to determine the sulfur content in the barium carbonate and the pretreatment was made on the samples before the determination. During the determination,composite fluxing agent was selected. In that way, the sample not only can be burnt in high temperature, but also the problem of sample splash on account of the action of oxygen stream can be avoided. This method＇s measuring range of sulfur is 0. 000 1% - 10%. The recovery rate is 95.2% - 102.2% and the relative standard deviation （RSD） is 0.89% -2.31%. With simple and quick operation, this method is accurate,reliable and can meet the requirements of determination.

关 键 词：燃烧滴定法 碳酸钡 硫 

分 类 号：TQ132.35[化学工程—无机化工]