摘要
介绍了燃烧容量法测定碳酸钡总硫含量的分析方法。试样中各价态的硫 ,在铁屑和锡粒催化下 ,经氧气流高温氧化为二氧化硫 ,经吸收液吸收变为亚硫酸。用碘—淀粉标准滴定溶液滴定 ,根据其消耗量计算出总硫含量。燃烧容量法与日本标准方法测定原理一样 ,测定结果一致 ,与日本标准方法相比 ,简便、快速、准确。
The determination of total sulfur content i n BaCO 3 by burn volumetric analysis is introduced.The S with various valence i n the sample are oxided into SO 2 in the present of catalysts,Fe and Sn,further into H 2SO 3 by absorption liquid,then the H 2SO 3 obtained is titrated by I 2-starch titrant.Based on the consumption of the titrant,the total S content can be calculated.This method has the features of simple,quick,accurate and rea sonable.
出处
《无机盐工业》
CAS
2002年第4期36-37,共2页
Inorganic Chemicals Industry
关键词
燃烧容量法
测定
碳酸钡
总硫含量
分析
二氧化硫
barium carbonate
determination
analysis meth od
standard
volumetric analysis
