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前文我们对硝酸根和亚硝酸根在无铵含镱(Ⅲ)醋酸缓冲溶液中的脉冲极谱进行了研究.硝酸根、亚硝酸根和羟胺的极谱性能多分别在铵离子及变价和多价阳离子存在下进行.我们用脉冲极谱方法进行研究,由于分辨能力好,发现在缓冲溶液、非缓冲溶液,在铵离子和镱(Ⅲ)存在下,随着硝酸根、亚硝酸根、羟胺分别存在和共存下能得到一个和多个脉冲极谱峰,对产生这些峰的机理和电极过程进行了探讨.
We have previously studied the pulse polarography of nitrate and nitrite in ammonium-free ytterbium (III) -containing acetate buffer solutions. The polarographic properties of nitrate, nitrite and hydroxylamine are, respectively, In the presence of anions and cations, we used a pulsed polarographic method to study the properties of the compounds. We have found that in the presence of ammonium ions and ytterbium (III), nitrate, nitrite, hydroxylamine One or more pulsed polarographic peaks can be obtained in the presence and coexistence, respectively. The mechanism of these peaks and the electrode process are also discussed.