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文献[1]报道了,Ag~+与5-Cl-PADAB(4-[(5-氯-2-吡啶)偶氯]-1,3-二氨基苯)在水相能生成不稳定的橙红色络合物,无实用价值.文献[2—4]报道了用非离子表面活性剂及用阴离子和非离子表面活性剂组成的混合表面活性剂对该体系的协同增敏作用,并建立了在水相直接测定矿石中微量银的方法.本文就阴、非离子表面活性剂AES(烷基聚乙二醇醚硫酸酯)对Ag~+与5-Cl-PADAB显色反应的作用作了初步研究,发现用此法测定银具有操作简便、稳定性好、灵敏度高等特点,
It has been reported in literature [1] that Ag ~ + and 5-Cl-PADAB (4 - [(5-chloro-2-pyridyl) even] -1,3-diaminobenzene can generate unstable orange Red complex, no practical value.References [2-4] reported the synergistic sensitization of this system with non-ionic surfactants and mixed surfactants composed of anionic and non-ionic surfactants and established Direct determination of silver in ore by aqueous phase method.In this paper, the effect of anionic and nonionic surfactant AES (alkyl polyglycol ether sulfates) on the color reaction of Ag ~ + with 5-Cl-PADAB Preliminary research and found that silver with this method has the advantages of easy operation, good stability, high sensitivity,