我们采用回滴定法进行了镓的电流滴定的研究,在含镓的溶液中加入过量EDTA(二钠盐),然后用ZnCl_2为回滴定剂,以1M HAc一1M NaAc为支持电解质,在外加电压为-1.35伏特(对饱和甘汞电极)左右进行滴定.当镓的温度在1γ～1.7毫克/毫升范围内,准确度达±1％左右.采用萃取法或离子交换树脂分离法都可以使镓与锌等金属阳离子完全分离.本方法成功地应用于ZnO中微量Ga的测定, We use the titration titration of gallium current titration study, in the gallium-containing solution with excess EDTA (disodium salt), and then use ZnCl 2 titration reagent to 1M HAc a 1M NaAc as a supporting electrolyte, the applied voltage For -1.35 volts (for saturated calomel electrode) around the titration.When the gallium temperature in the 1γ ~ 1.7 mg / ml accuracy of ± 1% accuracy.Using extraction or ion exchange resin separation method can make gallium And zinc and other metal cations completely separated.This method has been successfully applied to the determination of trace Ga in ZnO,