FLAME-BASED THERMIONIC DETECTION COUPLED ONLINE WITH MICROCOLUMN LIQUID-CHROMATOGRAPHY .2. CHARACTERIZATION OF THE SYSTEM

被引：8
|
作者：
KIENTZ, CE
VERWEIJ, A
DEJONG, GJ
BRINKMAN, UAT
机构：
[1] FREE UNIV AMSTERDAM,DEPT ANALYT CHEM,DE BOELELAAN 1083,1081 HV AMSTERDAM,NETHERLANDS
[2] TNO,PRINS MAURITIS LAB,2280 AA RIJSWIJK,NETHERLANDS
来源：
JOURNAL OF CHROMATOGRAPHY | 1992年 / 626卷 / 01期
关键词：
D O I：
10.1016/0021-9673(92)85330-V
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Flame length and temperature measurements were used to study the influence of various parameter settings in thermionic detection coupled on-line with microcolumn liquid chromatography (micro-LC). In the present system both the rubidium source temperature and the interface performance depend strongly on the flame dimensions and gas flow-rates. When optimizing signal-to-noise ratios, the influences of the flame length, the rubidium source-burner rim distance and the hydrogen and air flow-rates are mutually dependent. When changing the micro-LC eluent composition from pure water to pure methanol, the noise and background are increasingly determined by chemi-ionization reactions.
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页码：71 / 80
页数：10
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