A SIMPLE LARGE-VOLUME INJECTION SYSTEM WITH A SOLID-PHASE SAMPLE LOOP FOR PACKED-COLUMN SUPERCRITICAL-FLUID CHROMATOGRAPHY

被引:5
作者
ARNOLD, M
KLEIBOHMER, W
机构
[1] UNIV MUNSTER,INST CHEMO & BIOSENSORIK,D-48149 MUNSTER,GERMANY
[2] UNIV MUNSTER,LEHRSTUHL ANALYT CHEM,D-48149 MUNSTER,GERMANY
关键词
SUPERCRITICAL FLUID CHROMATOGRAPHY; SAMPLE INTRODUCTION; LARGE VOLUME INJECTION; SOLVENT-FREE INJECTION; MEMBRANE DISKS;
D O I
10.1007/BF02268289
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
The design and use of an easy-to-build large-volume injection system for packed column supercritical fluid chromatography (SFC) are reported. Two 6-port injection valves are used. After introduction of a liquid sample via the sample loop of one of the valves, nitrogen is used to transport the sample to a solid-phase extraction disk which is placed in a pressure tight fitting. The sample solvent evaporates into the nitrogen stream leaving the analytes on the solid-phase material. After a certain evaporation time the moblie phase of the SFC is directed to the solid phase, introducing the solvent-free sample into the SFC. It is possible to introduce liquid sample volumes of PAH- and PCB-solutions of up to 100 mu l without loss of chromatographic resolution. The relative standard deviations of peak areas are in the range of 4-9%.
引用
收藏
页码:612 / 618
页数:7
相关论文
共 11 条
[1]  
BERG BE, 1989, HRC-J HIGH RES CHROM, V12, P322
[2]  
BRINKMAN UAT, 1993, 15TH INT S CAP CHROM
[3]   SUPERCRITICAL FLUID CHROMATOGRAPHY OF POLYCHLORINATED-BIPHENYLS ON PACKED-COLUMNS [J].
CAMMANN, K ;
KLEIBOHMER, W .
JOURNAL OF CHROMATOGRAPHY, 1990, 522 :267-275
[4]   LARGE-VOLUME INJECTION IN CAPILLARY SUPERCRITICAL FLUID CHROMATOGRAPHY [J].
CAMPBELL, RM ;
CORTES, HJ ;
GREEN, LS .
ANALYTICAL CHEMISTRY, 1992, 64 (22) :2852-2857
[5]   DETERMINATION OF PHENOXYACID HERBICIDES IN WATER - POLYMERIC PRE-COLUMN PRECONCENTRATION AND TETRABUTYL-AMMONIUM ION-PAIR SEPARATION ON A PRP-1 COLUMN [J].
GEERDINK, RB ;
VANBALKOM, CAA ;
BROUWER, HJ .
JOURNAL OF CHROMATOGRAPHY, 1989, 481 :275-285
[6]   AN ALMOST ON-COLUMN INJECTOR FOR CAPILLARY SUPERCRITICAL FLUID CHROMATOGRAPHY [J].
HAWTHORNE, SB ;
MILLER, DJ .
JOURNAL OF CHROMATOGRAPHIC SCIENCE, 1989, 27 (04) :197-206
[7]  
HIRATA Y, 1989, J MICROCOLUMN SEP, V1, P242
[8]  
KIRSCHNER CH, 1993, HRC-J HIGH RES CHROM, V16, P73
[9]   SOLID-PHASE INJECTOR FOR OPEN TUBULAR COLUMN SUPERCRITICAL-FLUID CHROMATOGRAPHY [J].
KOSKI, IJ ;
LEE, ED ;
OSTROVSKY, I ;
LEE, ML .
ANALYTICAL CHEMISTRY, 1993, 65 (09) :1125-1129
[10]  
LEE ML, 1989, J MICROCOLUMN SEP, V1, P7