分光光度法测定CO助燃剂中铂含量

Spectrophotometic Determination of Platinum in CO Combustion Improver

中文关键词:  助燃剂  铂  分光光度法

英文关键词:combustion improver|platinum|spectrophotometry

中文摘要:

      建立了用分光光度法测定CO助燃剂中铂含量的方法. 在盐酸介质中，Pt（Ⅳ）被氯化亚锡溶液还原，生成黄色的亚氯铂酸（H₂PtC1₄），最大吸收波长位于403 nm处. 方法简单、快捷、准确，回收率在97%~103%之间，相对标准偏差小于2.0%. 在优化的实验条件下，助燃剂中的常见元素对测定铂含量无干扰.

英文摘要:

      A method for the determination of platinum content in CO combustion improver using a spectrophotomeic method is described.In an HC1 medium, Pt(Ⅳ)was reduced by SnC1₂ solution and formed a yellow color chloroplatious acid(H₂PtC1₄).The absorption maxima of which is at a wavelength of 403 nm.The method features simplicity,rapidness and accuracy,with a recovery in the range of 97% to 103%,and the relative standard deviations were less than 2%.The common elements existed in the CO combustion improver do not interfere the determination of platinum under the optimized test conditions.