Flow-injection spectrophotometric determination of vanadium with malachite green oxalate by bromate in acidic and micellar medium
来源期刊：Rare Metals2011年第3期
论文作者：Mohsen Keyvanfarda Narges Abedib
文章页码：216 - 221
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.
Mohsen Keyvanfarda1，Narges Abedib2
1. Faculty of Science,Majlesi Branch,Islamic Azad University2. Group of Chemistry,Shahreza Branch,Islamic Azad University
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.
关键词：
