Flow-injection spectrophotometric determination of vanadium with malachite green oxalate by bromate in acidic and micellar medium

作     者：Mohsen Keyvanfarda Narges Abedib 

作者机构：Faculty of ScienceMajlesi BranchIslamic Azad University Group of ChemistryShahreza BranchIslamic Azad University 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2011年第30卷第3期

页      面：216-221页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学] 

基　　金：Islamic Azad University  IAU 

主　　题：vanadium flow injection analysis malachite green oxalate spectrophotometry micellar medium 

摘      要：A flow injection method is proposed for determining vanadium（V）. The method is based on its catalytic effect on the oxidation of malachite green oxalate by bromate. The reaction was monitored spectrophotometrically by measuring malachite green oxalate absorbance at λmax = 625 nm. The reagents and manifold variables, which have influences on the sensitivity, were investigated and the optimum conditions were established. The optimized conditions made it possible to determine vanadium in the ranges of 10-140 ng/mL with a detection limit of 5.2 ng/mL and a sample rate of 20 ± 5 samples/h.