容量法测锑矿石中锑的评述

Improvement of Determination of Tungsten by Colorimetry

随着各种测量仪器的出现,锑矿石的分析也有了长足的发展,相对于操作仪器的复杂,容量法测锑(可不经过分离而直接滴定)仍是一种简便不可替代的方法。常见的测量方法有硫酸铈容量法、溴酸钾容量法、高锰酸钾容量法、碘量法等,利用锑(ⅲ)与锑(ⅴ)之间的定量转化,在酸性环境下用不同的氧化剂标准溶液滴定氧化锑来确定其中的含量。文章通过对各种容量法的对比,结合锑矿石特有的成分,指出不同方法的优劣,为锑矿石的准确分析提供基础。

With the emergence of various testing instruments, Sb analysis has made considerable development. Comparing with testing by instrument, testing by capacity is relatively a simple and irreplaceable method. There are familiar methods such as cerium sulfate volumetric methods, potassium bromate volumetric method, potassium permanganate volumetric methods, iodometry. These methods make use of the principle of quantitative transformation between antimony Sb （iii） and Sb （v）. The percentage composition of the Sb is worked out by titrating the antimony oxide with different oxidant standard solution in the acidic conditions. Comparing different volumetric methods, and combining with the special element of Sb, the paper pointed out the pros and cons of different ways of Sb testing to lay a foundation for an accurate analysis.