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首页> 外文期刊>Eurasian Journal of Analytical Chemistry >Kinetic Spectrophotometric Determination of Vanadium (V) Using Ponceau S
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Kinetic Spectrophotometric Determination of Vanadium (V) Using Ponceau S

机译:丽春红S动力学光度法测定钒(V)

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style="background-color:rgb(250, 250, 250); color:rgb(17, 17, 17); font-family:arial,verdana,helvetica,sans-serif; font-size:11.2px">A sensitive and selective kinetic method is proposed for the determination of nanogram amounts of vanadium (V). The method is based on the catalytic effect of vanadium (V) on the oxidation of Ponceau S by hydrogen peroxide in acidic media. The rate of the reaction is monitored spectrophotometrically at 520 nm. The method allows determination of vanadium (V) concentrations in the range 2-400 ng mL-1 style="background-color:rgb(250, 250, 250); color:rgb(17, 17, 17); font-family:arial,verdana,helvetica,sans-serif; font-size:11.2px"> with a relative standard deviation of ± 2%. The proposed method has been applied successfully for the determination of vanadium (V) in tap water and wastewater samples.
机译:style =“ background-color:rgb(250,250,250); color:rgb(17,17,17); font-family:arial,verdana,helvetica,sans-serif; font-size:11.2px” >提出了一种灵敏且选择性的动力学方法来测定纳克量的钒(V)。该方法基于钒(V)在酸性介质中过氧化氢对Ponceau S的氧化催化作用。在520nm处用分光光度法监测反应速率。该方法可以测定2-400 ng mL范围内的钒(V)浓度 -1 style =“ background-color:rgb(250,250,250);颜色:rgb(17,17,17); font-family:arial,verdana,helvetica,sans-serif; font-size:11.2px“>,相对标准偏差为±2%。该方法已成功应用于自来水和废水中钒的测定。

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