电化学抑制偶联化学再生式离子色谱抑制器  

Electrochemical Suppressor Coupled with Chemical Regeneration for Ion Chromatography

作　　者：胡荣宗[1] 周亚新[1] 王建华[1] 李小波[1] 翁玉华[1] 

机构地区：[1]厦门大学化学系,福建厦门361005

出　　处：《分析测试学报》2002年第4期23-26,共4页Journal of Instrumental Analysis

基　　金：福建省自然科学基金资助项目(D990001);厦门大学自选课题基金资助项目

摘　　要：提出了一种电化学抑制偶联化学再生式的高性能离子色谱抑制柱,用0.125～0.25mol/L磷酸作为阴离子色谱电化学抑制柱的电解液,电解液的废液经H +型离子树脂柱交换后 ,在线循环使用 ;抑制柱结合了电化学抑制和化学再生的优点 ,电解液的利用效率高 ,抑制柱基本实现无时限地连续工作 ,性能稳定 ,抑制效率为99.5 % ,装配于离子色谱仪检测阴离子 ,被测离子的峰高及保留时间的重复性的相对标准偏差均小于1.8 %。A high- performance electrochemical suppressor coupled with chemical regeneration for ion chromatography was studied using 0.125～0.25 mol/L phosphoric acid as a flow electrolyte solution. The electrolyte solution can be reused through a cation exchange resin column. The suppressor combines the characteristics of electrochemical suppression and chemical regeneration. Since the electrolyte solution can be regenerated for several times on line, the suppressor could continuously work almost no time limitation. The suppressor has high stability and performance with suppression efficiency of 99.5%. The repeatabilities of both the peak height and retention time of analytes determined by ion chromatography with this suppressor are satisfactory(RSD<1.8%, n=5).

关 键 词：电化学抑制 偶联 化学再生式离子色谱 抑制器 离子色谱 抑制柱 离子交换树脂 

分 类 号：O657.75[理学—分析化学]