聚L-组氨酸/铁氰根修饰电极测定痕量银  

Determining trace silver ions by poly-L-histidine/Fe(CN)_6^(3-) modified electrode

作　　者：贾晶晶[1] 贾艳辉[2] 侯卫华[3] 张国荣[4] 

机构地区：[1]滨州学院学报编辑部,山东滨州256603 [2]滨州技术学院电气工程系,山东滨州256603 [3]滨州技术学院化学化工系,山东滨州256603 [4]山东师范大学化学化工与材料科学学院,山东济南250014

出　　处：《化学试剂》2010年第8期711-714,共4页Chemical Reagents

基　　金：滨州学院"青年人才创新工程"科研基金项目(BZXYQNLG200726)

摘　　要：制备了聚L-组氨酸/铁氰根修饰电极,研究了Ag+在该修饰电极上的电化学行为,建立了一种测定痕量Ag+的新方法,该方法简便准确。在3.0×10-12～7.0×10-6mol/L的浓度范围内,溶出峰电流与Ag+浓度呈良好的线性关系,检测下限可达1.0×10-13mol/L。A new chemically modified GC electrode was prepared using poly-L-histidine/Fe（CN）3-6 as the modifier,and the electrochemical behaviors of Ag＋on the modified electrode were studied.A new approach was developed for the sensitive and accurate determination of Ag＋by the said electrode.The stripping peak current increased linearly with the concentration of Ag＋ranging from 3.0×10-12 mol/L to 7.0×10-6 mol/L.The detection limit was 1.0×10-13 mol/L.The modified electrode can be used to measure silver ions in water.

关 键 词：L-组氨酸 铁氰根 Ag+ 修饰电极 

分 类 号：O657.1[理学—分析化学]