钒(Ⅴ)-茜素S-溴酸钠体系极谱络合吸附催化波的研究  

Studies on the Polarographic Adsorptive Catalytic Wave of Vanadium(Ⅴ)-Alizarin Red S-Sodium Bromate System

作　　者：王月宣[1] 李益恒[1] 阮湘元[2] 

机构地区：[1]湘潭大学化学学院,湘潭411105 [2]东莞理工学院应用化学系,东莞523106

出　　处：《分析化学》2004年第9期1206-1208,共3页Chinese Journal of Analytical Chemistry

摘　　要：在六次甲基四胺 HCl缓冲溶液 (pH 5 .5 )中 ,钒 (Ⅴ ) 茜素S 溴酸钠体系产生一灵敏的吸附平行催化波 ,峰电位在 -0 .64V(vs.SCE)。二次导数峰高与钒 (Ⅴ )浓度在 1 .0× 1 0 -9～ 2 .0× 1 0 -6mol/L范围内呈线性关系 ;检出限为 5 .0× 1 0 -10 mol/L。研究了电极反应机理 ,方法应用于水样中钒的测定 ,结果满意。A sensitive polarographic adsorptive catalytic wave of vanadium(Ⅴ) -Alizarin red S (ARS) complex was obtained by single-sweep polarography in 0.15 mol/L hexamethylenetetraamine-hydrochloric acid buffer solution containing 1.0×10 -5 mol/L ARS and 0.12 mol/L sodium bromate at pH 5.5. The peak potential appears at -0.64V(vs.SCE). The peak height is linear with the concentration of vanadium in the range of 1.0×10 -9 ～2.0×10 -6 mol/L. The electrode processes of the adsorptive catalytic wave have been studied. The method has been applied to the determination of vanadium in water samples with satisfactory results.

关 键 词：钒 茜素S 溴酸钠 极谱络合吸附催化波 含量测定 

分 类 号：O657.14[理学—分析化学]