钒-过硫酸钾-靛蓝胭脂红催化荧光法测定痕量钒  

Vanadium-Potassium Persulfate-Indigo Carmine Catalytic Fluorimetric Determination of Trace Vanadium

作　　者：聂德菊 班燕菊 管小硼 王永琼 梁宇敏 凌绍明 Nie Deju;Ban Yanju;Guan Xiaopeng;Wang Yongqiong;Liang Yumin;Ling Shaoming(College of Chemistry and Environmental Engineering,Baise University,Baise 533000,China)

机构地区：[1]百色学院化学与环境工程学院,广西百色533000

出　　处：《山东化工》2021年第16期134-136,共3页Shandong Chemical Industry

摘　　要：在柠檬酸介质中,钒(Ⅴ)催化过硫酸钾氧化靛蓝胭脂红而产生荧光,据此建立一种测定钒(Ⅴ)的荧光分析方法。探讨反应介质种类及其用量,反应时间,反应温度等因素对体系的影响,优化测定条件。在最佳试验条件下,方法的线性范围为0.0145~0.174μg/mL(Ⅴ),线性回归方程为ΔF=23.091+6642.2ρ(ρ的单位:μg/mL),相关系数R 2为0.9858,检出限(3S/K)为0.0113μg/mL。方法应用于实际样品测定,测定结果的RSD为4.4%~5.0%,回收率为86.5%~90.7%。In citric acid medium, vanadium(Ⅴ) catalyzes the oxidation of indigo carmine by potassium persulfate to produce fluorescence. Based on this, a fluorescence analysis method for the determination of vanadium(Ⅴ) is established. We discussed the influence of the type of reaction medium and its dosage, reaction time, reaction temperature and other factors on the system, and optimized the measurement conditions. Under the best experimental conditions, the linear range of the method is 0.0145~0.174 μg/mL(Ⅴ), the linear regression equation is ΔF=23.091+6642.2 ρ(unit of ρ:μg/mL), the correlation coefficient R2 is 0.9858, and the detection The limit(3 S/K) is 0.0113 μg/mL. This method was applied to the determination of actual samples, and the RSD of the determination results was 4.4%~5.0%, and the recovery rate was 86.5%~90.7%.

关 键 词：钒(Ⅴ) 荧光法 测定 氧化反应 

分 类 号：O657.3[理学—分析化学]