应用流动注射导数光度法测定矿石中钒  

Determination of Vanadium in Ore Samples by Flow Injection-Derivative Spectrophotometry

作　　者：赵珍义[1] 宋金和[1] 于吉[1] 李鲲[1] 

机构地区：[1]辽宁大学化学院,辽宁沈阳110036

出　　处：《岩矿测试》2008年第5期386-388,共3页Rock and Mineral Analysis

摘　　要：在自行研制的一套流动注射分析装置上，实现了导数光度法测定金属矿样中钒含量。利用二安替比林基-（对二甲氨基）苯基甲烷与钒显色的适宜条件（λmax=552nm），一次注样产生两个拐点导数光度值（△A），进样频率为110次／h，钒含量在0-0．18μg／mL符合比尔定律。方法操作简单，用于矿石和炉渣样品中痕量钒的测定，结果令人满意。The paper presents the determination of trace vanadium in ore samples by derivative spectrophotometry, based on the chromatogenic rection of diantipyryl-（p-dimethylamino）-phenylmethane （DADM） with vanadium （λmax=552 nm）, in a homemade flow injection system. Two inflexion points of the derivative absorbancy （AA） could be obtained in one injection. The method provides linear dynamic range of 0-0.18 μg/mL for vanadium with sampling frequency of 110 injections per hour. The method has been applied to the determination of trace vanadium in ores with satisfactory results.

关 键 词：流动注射分析 二安替比林基-(对二甲氨基)苯基甲烷 导数光度法 钒 矿样 

分 类 号：O657.32[理学—分析化学] O614.511[理学—化学]