硼的极谱吸附波及其应用

Adsorptive Complex Wave of Boron with Beryllon Ⅲ

硼的极谱催化波、吸附波,迄今未见资料报导。笔者发现,在pH3.5-4.5的NH4-AC-HAC缓冲溶液中,在水浴加热的条件下,硼与铍试剂Ⅲ可形成一种1:1的稳定的电活性络合物。

In NH_(4)Ac-HAc buffer solution at pH 3.5-4.5the complex of boron and beryllon Ⅲ produces a well-defined polarographic wave with peak potential at-0.46 V(vs,S.C.E.).A linear relationship holds between the wave heights and the concentrations from 4×10^(10)-4×10^(-7)mol/L boron.This method is useful for the determination of trace amounts of B in water,soils and ores.The adsorptive behaviour of the complex of B with beryllon III was studied by several electrochemical methods.The wave has been proved to be an adsorptive complexwave.