硫氮氧杂大环汞修饰电极的研究  

PVC Membrane Mercury-modified Electrode with O,N,S-donor Macrocycle as Carriet

作　　者：张胜义[1] 赵亮[1] 倪诗圣[1] 吴守国[1] 

机构地区：[1]安徽大学化学系,中国科技大学应用化学系

出　　处：《中国科学技术大学学报》1996年第2期271-275,共5页JUSTC

基　　金：国家自然科学基金

摘　　要：利用合成的新型硫氮氧杂大环化合物为载体制备了ＰＶＣ膜汞（Ⅱ）修饰电极．该电极对汞（Ⅱ）的线性响应范围为８×１０－６～６×１０－３ｍｏｌ·ｌ－１，对大多数金属离子的选择性系数小于１×１０－３．还研究了修饰电极的各种性能，讨论了修饰电极的响应机理，并将修饰电极应用于直接电位法和电位滴定法的测定中．The PVC membrane mercury-modified electrode is prepared using an O,N,S-donor macrocycle which was systhesized lately.The electrode gives a linear response within the concentration range of 8 × 10-6-6×10-3mol·L-1 of Hg(Ⅱ).The selectiveity coefficients of the electrode are less than 1 × 10-3 for most other metal ions.The are response mechanism and characteristics are studied.The electrode has been used successfully in potentiometric titration and direct potentiometry.

关 键 词：汞 杂大环 PVC膜 硫氮氧杂大环 化学修饰电极 

分 类 号：O614.243[理学—无机化学] O657.15[理学—化学]