阻抑溴酸钾氧化二甲基黄光度法测定痕量钒  

Inhibitory Spectrophotometric Method for the Determination of Trace Vanadium(V) Based on The Oxidation of Dimetheyl Yellow by Potassium Bromate

作　　者：杨天隆[1] 林璇[1] 苏伟波[1] 

机构地区：[1]漳州师范学院化学系,福建漳州363000

出　　处：《漳州师范学院学报（自然科学版）》2004年第4期84-87,共4页Journal of ZhangZhou Teachers College（Natural Science)

摘　　要：研究了痕量钒(V)阻抑溴酸钾氧化二甲基黄的褪色反应, 确定了最佳反应条件, 建立了一种光度测定痕量钒(V)的新方法.结果表明, 方法的检出限为2.3×10-10g/mL, 线性范围为0.40-4.0μg/L.用于化学试剂中痕量钒(V)的测定,结果满意.A new inhibitory spectrophotometric method for the determination of trace vanadium (V) has been proposed. The method is based on the inhibitory effect of vanadium (V) on the oxidation of dimetheyl yellow by potassium bromate.Under the experimental optimum conditions,the linear dynamic range of this method is 0.40-4.0μg/ L, the detection limit is 2.3×10-10g/mL. The method has been used to determine trace vanadium(V) in tea and human hair samples with satisfactory results.

关 键 词：阻抑 钒(V) 二甲基 痕量 溴酸钾 光度法 最佳反应条件 检出限 氧化 褪色反应 

分 类 号：O657[理学—分析化学] O629[理学—化学]