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在pH6.0的KCl底液中，钒（Ⅴ）-荧光镓（LMG）配合物产生一灵敏的极谱吸附波，峰电位在－0．86V（vs·SCE），二次导数峰高与钒（Ⅴ）浓度在3．9×10－9～3．9×10－6mol／L范围内里线性关系，检测限为2．0×10-9mol／L．研究了电极反应机理，方法已成功地应用于自来水中机的测定．
The vanadium (V) -fluorescent gallium (LMG) complex produced a sensitive polarographic adsorption wave at pH 6.0 KCl at a peak potential of -0.86 V (vs · SCE) with a second derivative peak height of The concentration of vanadium (V) was linear in the range of 3.9 × 10-9 ~ 3.9 × 10-6mol / L with the detection limit of 2.0 × 10-9mol / L. The electrode reaction mechanism has been studied. The method has been successfully applied to the determination of tap water machine.