论文部分内容阅读
新亚铜灵测定铜有很高的选择性,其不足之处是灵敏度较低(ε=7.9 ×10~(3)升·摩尔~(-1)·厘米(-1)).文献报导甲基橙能与铜(Ⅰ)-新亚铜灵生成三元络合物,灵敏度可提高5倍,但未见详细研究报告。铜(I)-新亚铜灵络合物为+1价的络阳离子,这为组成三元离子缔合物提供了条件,关键是选择何种染料阴离子,使形成的缔合物既不失原选择性,又能大大提高灵敏度.为此,详细研究了铜(I)-新亚铜灵—桔黄Ⅳ(或乙基橙或甲基橙)三元离子缔合物的形成条件及萃取光度测定铜的可能性。
Neocuproine has a high selectivity for copper, which has the disadvantages of lower sensitivity (ε = 7.9 × 10-3 mol · cm -1). Base orange can form ternary complex with copper (Ⅰ) - neocuproine, the sensitivity can be increased by 5 times, but no detailed research report. Copper (I) - neocuproine complex is a +1-valent cation, which provides the conditions for the formation of ternary ion association, the key is to choose what kind of dye anion, so that the formation of association without losing Original selectivity, but also greatly improve the sensitivity.Therefore, the formation conditions and extraction of copper (I) - neocuproine - orange Ⅳ (or ethyl orange or methyl orange) Photometric determination of the possibility of copper.