溴化十六烷基吡啶光度法测定微量锡  

Spectrophotometric Determination of Microtin

作　　者：欧珏[1] 刘湘明[1] 

机构地区：[1]中南工业大学

出　　处：《湖南化工》1999年第2期42-44,共3页

摘　　要：在０３ｍｏｌ／Ｌ的硫酸介质中，于溴化十六烷基吡啶存在下，形成锡苯芴酮溴化十六烷基吡啶橙红色三元络合物，其吸收波长为５１０ｎｍ，摩尔吸光系数为ε５１０＝１．０７×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，样品标准偏差Ｓ＜０．０３％，锡含量在０～８μｇ／５０ｍｌ内符合比尔定律。本法已成功地运用于多金属矿分析。In the presence of cetylpyridine bromide, tin can form an orange ternary complex with phenylfluone in 0.3mol/L sulphuric acid medium. The maximum absorption of the complex is at 510 nm and molar absorptivity, 1.07105. Beer's law is obeyed in the range of 08g/50ml for Sn. The standard deviation of sample is less than 0.03%. The method has been used for determination of multiple metal ores with satisfactory results.

关 键 词：锡 溴化十六烷基 吡啶 光度法 测定 矿石 

分 类 号：O614.432[理学—无机化学] P575.4[理学—化学]