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本文讨论了钒(V)与5-Br-PADAP形成的配合物在悬汞电极上的不可逆吸附还原的导数吸附伏安法,并用所建立的方法测定了自来水中超痕量的钒(V)。方法的线性范围为7.5×10~(-10)～1×10~(-7)mol/L,检测下限为5×10~(-10)mol/L。
In this paper, the derivative sorption voltammetry for the irreversible reduction of vanadium (V) and 5-Br-PADAP complexes on the hanging mercury electrode was discussed. The ultra-trace vanadium (V) in tap water was determined by the established method. The linear range of the method is 7.5 × 10 -10 ~ 1 × 10 -7 mol / L, and the detection limit is 5 × 10 -10 mol / L.