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.

引用

页码：71 / 80

页数：10

共 15 条

[1] OPTIMIZATION OF THE INSTRUMENTAL PARAMETERS OF A COMBINED LIQUID CHROMATOGRAPH MASS-SPECTROMETER COUPLED BY AN INTERFACE FOR DIRECT LIQUID INTRODUCTION .5. DESIGN AND CONSTRUCTION OF LC MS INTERFACES UTILIZING FUSED-SILICA CAPILLARY TUBES AS VACUUM NEBULIZERS [J].