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交流示波极谱滴定法可有效地应用于EDTA滴定Zn~(2+)和Zn~(2+)滴定亚铁氰化物。用汞膜电极为极化电极,镀汞银电极为参比电极。此法比指示剂法快速和准确。当氢氧化铁和其它有色沉淀存在时,交流示波极谱滴定仍能进行而指示剂法就受干扰。因此,在氨性溶液中,用铜试剂使Fe~(3+)、Al~(3+)、Pb~(2+)、Cu~(2+)、Mn~(4+)等离子以沉淀形式存在时,锌仍可滴定。计论了一个快速测定锌矿中锌的测定方法。
AC Oscillopolarographic titration can be effectively applied to EDTA titration Zn 2+ and Zn 2+ titration of ferrocyanide. The mercury film electrode is a polarizing electrode, and the mercury-plated silver electrode is a reference electrode. This method is faster and more accurate than the indicator method. When ferric hydroxide and other colored precipitates are present, the AC oscilloscope titration can still proceed and the indicator method is disturbed. Therefore, Fe ~ (3 +), Al ~ (3 +), Pb ~ (2 +), Cu ~ (2 +) and Mn ~ (4+) ions were precipitated in the ammoniacal solution When present, zinc can still be titrated. A rapid method for the determination of zinc in zinc ore is discussed.