PRESSURE AND MODIFIER PROGRAMMING IN PACKED-COLUMN SUPERCRITICAL FLUID CHROMATOGRAPHY

被引：8

作者：

MORRISSEY, MA ^{[1
]}

GIORGETTI, A ^{[1
]}

POLASEK, M ^{[1
]}

PERICLES, N ^{[1
]}

WIDMER, HM ^{[1
]}

机构：

[1] CIBA GEIGY AG,CENT ANALYT RES,ANALYT RES,CH-4002 BASEL,SWITZERLAND

来源：

JOURNAL OF CHROMATOGRAPHIC SCIENCE | 1991年 / 29卷 / 06期

关键词：

D O I：

10.1093/chromsci/29.6.237

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Using a self-adjusting, microprocessor-controlled valve and computer-controlled piston pumps, modifier and pressure gradients may be generated separately or simultaneously to improve separation. For several test compounds, the reproducibility of retention time and peak area is found to be less than 2% relative standard deviation when pressure and modifier concentration are programmed together. Examples are shown for samples of polystyrenes and epoxy resins where programming both composition and pressure yields a separation which is superior to programming only one or the other.

引用

页码：237 / 242

页数：6

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