摘要
本文研究了V(V)—3.5—Cl_2—DMPAP—NaBrO_3体系极谱催化波产生的条件,探讨了波性质和反应机理,并拟定了示波催化极谱法测定矿样和钢样中痕量钒的分析方法。
In a supporting electrolyte, containing 1.0×10^(-5) mol/L 3,5-Cl_2-DMPAP, 0.03mol/L NaBrO_3, and 0.001 mol/L H_2SO_4 (pH=2.5+0.10), a very sensitive polarographic catalytic wave of vanadium was obtained using single-sweep polarography. The peak potential appears at-0.25 V(vs, SCE). The derivative wave height is proportional to the concentration of vanadium in the range 0.04-12ppb. The method has been developed for the determination of V in minerals and alloy steels. The behavior and mechanism of the polarographic catalytic wave have been discussed.
出处
《分析试验室》
CAS
CSCD
北大核心
1989年第5期17-19,共3页
Chinese Journal of Analysis Laboratory
