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本工作用电位法研究溶液中Zn(Ⅱ)混合配体络合物的形成。实验结果表明,在氢氧化钠-三乙醇胺溶液中,Zn(Ⅱ)的主要络合品种为Zn(TEA)(OH)_2。在氢氧化钠-乙二胺四乙酸溶液中Zn(Ⅱ)的主要络合品种为[Zn(EDTA)(OH)_2]~(4-)。
In this work, the formation of Zn (Ⅱ) mixed ligand complex in solution was investigated by potentiometry. The experimental results show that Zn (Ⅱ) is Zn (TEA) (OH) 2 in the sodium hydroxide-triethanolamine solution. The main complex species of Zn (Ⅱ) in sodium hydroxide - ethylenediaminetetraacetic acid solution is [Zn (EDTA) (OH) 2] ~ (4-).