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本文试验了Zn~(2+)与SCN-所形成的[zn(SCN)_4]~(2-)络阴离子在0.056N左右的酸性介质中与结晶紫所形成的离子缔合物被聚乙烯醇增溶后,不经萃取分离干扰元素,加入适当的隐蔽剂直接在水相中显色测定纯铝和铝合金中微量锌(0.005～0.10%)。此显色反应有很高的灵敏度和较好的选择性,方法优子双硫腙PAN、PAR、XO等。
In this paper, the ion complex formed with crystal violet in acidic media of about 0.056N with [Zn (SCN) 4] 2- anion formed by Zn 2+ and SCN- was tested by polyethylene After the alcohol is solubilized, the interference elements are extracted without extraction, and the trace amount of zinc (0.005-0.10%) in the pure aluminum and the aluminum alloy is directly determined by adding appropriate concealment agent in the aqueous phase. This color reaction has a high sensitivity and good selectivity, the method of superior dithizone PAN, PAR, XO and so on.