ELECTROCHEMICAL DETECTION FOR TRACE ANALYSIS BY CAPILLARY HPLC

被引：0
|
作者：
RUBAN, VF
机构：
来源：
HRC-JOURNAL OF HIGH RESOLUTION CHROMATOGRAPHY | 1993年 / 16卷 / 11期
关键词：
MICRO-LC; AMPEROMETRIC DETECTOR; NITROPHENOLS;
D O I：
暂无
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
An amperometric-type electrochemical detector is proposed for use in capillary HPLC. Its cell (volume 60 nl) contains a cylindrical working electrode for detecting the presence of electroactive compounds. The noise level is 3-5 pA depending on the potential. The minimum detectable concentrations of the o-, m-, and p- isomers of nitrophenol (after separation of a 20 mul sample on a fused silica column) lies between 4 and 18 ng/l. The relative standard deviation of the height of the chromatographic peaks of phenols present at concentrations of 10 ppb does not exceed 0.08 (n = 5).
引用
收藏
页码：663 / 665
页数：3
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