泡塑吸附硫脲解脱导数分光光度法测定地质样品中的金  

Determination of Molybdenum in Geology Samples by Using Derivative Spectrophotometry Method

作　　者：刘娟 王振德 刘敏 刘国军 

机构地区：[1]辽宁省有色地质局一○一队实验室,辽宁抚顺113015 [2]辽宁抚顺石化公司化塑厂,辽宁抚顺113015 [3]辽宁省有色地质局一○五队实验室,辽宁葫芦岛125000

出　　处：《有色矿冶》2012年第4期56-57,62,共3页Non-Ferrous Mining and Metallurgy

摘　　要：文章探讨了导数分光光度法测定地质样品中金的方法:样品经过王水溶解后,在pH=3.2的苯二甲酸氢钾的介质中,借助聚乙烯醇(PVA)存在下,金与钼酸盐和罗丹明B(RB)的显色反应进行测定。对3个国标金矿样品的分析显示该方法具有较好的精密度,经本方法测定10多件地质样品中金与氢醌滴定法结果对照,数值均满足DZ/T 0130-2006《地质矿产实验室测试质量管理规范》要求。In this paper,the gold element was determined in geology samples by derivative spectrophotometry method.The samples were dissolved by aqua regia.In medium of potassium biphthalate（pH=3.2）,With the help of polyvinyl alcohol,chromogenic reaction were occurred between gold and molybdenate and rhodamineB（RB）.The measurement accuracy of 3 standard samples are satisfied.The relatively warpes of results of more then 10 geology samples measured by titration of hydroquinone methods accord with the requests of the criterion.

关 键 词：导数分光光度法 地质样品 金 泡塑吸附 显色反应 

分 类 号：O657.3[理学—分析化学]