摘要
设计了一种新的毛细管电泳检测器．根据高频电导滴定原理，将电导电极做成两个金属圆筒套于分离毛细管外，并向两个电极施加高频电压．经毛细管分离后的组分流过两个电极之间时，高频电流发生变化，得到毛细管电泳图．该检测器具有应用范围广、操作简便及重现性好等优点，已初步应用于混合无机离子的测定．
Abstract A high frequency conductivity detector for capillary electrophoresis was designed based on the principle of high frequency titration. In this detector, two tubular electrodes were placed outside the separation capillary. The results of various influence factors could be explained theoretically. The good detection conditions were 0. 5-1. 5 mm of distance between the two electrodes, and 20?50 kHz of frequency. LOD reached about 10-6 mol/L. The detector can be used to detect all charged analytes and avoid poisoning of electrodes.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第5期801-804,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:29675033)资助.
