【摘要】 <正>钒在不同底液中的极谱特性由Ligán等作了较详细的研究;钒（V）的极谱催化波曾由高小霞、李南强等作了深入的研究莫茂生用单扫示波极谱,研究了钒（V）—Hcup在HAc—NáAe底液中的示波导数极谱行为,所得线性范围为2x10^-5～8×10^-8M;我们用79—1型伏安分析仪研究钒（V）—Hcup配合物在悬汞电极上吸附富集后的伏安特性,发现在0.4M NH⁴Cl pH更多还原

【Abstract】 In the 0.4M NH4Cl(pH,4.8) suporting electoiyte containing cupferron, a sensitive adsorptive complex wave of vanadium( Ⅴ )-cupferron complex has been obtained by using linear potential sweep voltam metry. The reduction peak of the complex was at -0.73V( vs.SCE) .The height of the derivative peak was proportional to the pre-concentration time,y2(scan rate) and the concentration of vanadium (Ⅴ) in the range of 6.0×10-10 -4.0×10-8M.The limit of the determination was 20ppt. Optimal conditions for the determination of trace amounts of vanadium (Ⅴ) in cast alloy iron were suggested.更多还原