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碳糊化学修饰电极是在普通碳糊中加入特定的化学修饰剂而制成的一类新型电极.由于碳糊电极本身具有较大的电位使用范围,背景电流低,表面更新方便,并且容易与各种固体和液体试剂混合,因而这类修饰电极近年来得到了迅速发展.通过选择特效性的修饰剂,可以使电极具有很高的灵敏度和选择性.本文报道了一种用萃取剂三烷基叔胺(N_(235))制成的碳糊修饰电极.该电极可以从溶液中选择性萃取富集金,在直接测定某些金矿样品时得到了满意的结果.作者在自制的挤压式碳糊电极上,对这种萃取型化学修饰电极的制备,富集,活化,再生过程和电化学特性进行了系统的研究.
Carbon paste chemically modified electrode is a kind of new type electrode made by adding specific chemical modifier to ordinary carbon paste.Because the carbon paste electrode itself has a larger range of potential application, low background current, easy surface renewal and easy This kind of modified electrode has been developed rapidly in recent years because of the mixture of various solid and liquid reagents.It can make the electrode have high sensitivity and selectivity by choosing the special modifier.We have reported a method using the extractant trialkyl Tert-amine (N_ (235)) was used as carbon paste modified electrode.The electrode can be used for the selective extraction of gold from the solution, and satisfactory results have been obtained in the direct determination of some gold samples.After the self-made extrusion Type carbon paste electrode, this extraction type chemically modified electrode preparation, enrichment, activation, regeneration process and electrochemical properties of a systematic study.