流动注射化学发光法测定痕量钒(Ⅴ)  

Flow-injection chemiluminescence determination of Vanadium (Ⅴ)

作　　者：瞿鹏[1] 许春丽[1] 田穗康[1] 章竹君[1] 

机构地区：[1]陕西师范大学化学与材料科学学院,陕西西安710062

出　　处：《陕西师范大学学报（自然科学版）》2003年第1期83-85,共3页Journal of Shaanxi Normal University：Natural Science Edition

基　　金：霍英东教育基金会资助项目(81013)

摘　　要：基于在硫酸介质中钒(Ⅴ)与磷钼酸形成具有更强氧化性的磷钼钒杂多酸(HPA),而磷钼钒杂多酸可直接氧化碱性鲁米诺产生强的化学发光,并结合流动注射分析技术,建立了一种测定痕量钒的新方法.其线性范围为5 0×10-9～1 0×10-5g/mL,方法的检出限为1 0×10-9g/mL.测定2 0×10-7g/mL的钒,11次连续测定的相对标准偏差为2.2%.方法已用于水样中痕量钒的测定.A novel chemiluminescence (CL)system for the determination of Vanadium (Ⅴ) is described. It is based on that Vanadium (Ⅴ) and molybdophosphate in sulfuric acid medium could form vanadomolybdophosphoric heteropoly acid, which could oxidize luminol to produce CL emission. The linear range of calibration curve is 5×10-9～ 1×10-5g/mL and the determination limit is 1×10-9g/mL. The system has been applied to the determination of Vanadium (Ⅴ) in water samples with satisfactory results.

关 键 词：流动注射化学发光法 鲁米诺 磷钼钒杂多酸 钒 含量测定 发光强度 

分 类 号：O614.511[理学—无机化学] O657.3[理学—化学]