COMPUTER-SIMULATION AS AN AID IN METHOD DEVELOPMENT FOR GAS-CHROMATOGRAPHY .2. CHANGES IN BAND SPACING AS A FUNCTION OF TEMPERATURE

被引：32

作者：

DOLAN, JW ^{[1
]}

SNYDER, LR ^{[1
]}

BAUTZ, DE ^{[1
]}

机构：

[1] LC RESOURCES INC,3182C OLD TUNNEL RD,LAFAYETTE,CA 94549

来源：

JOURNAL OF CHROMATOGRAPHY | 1991年 / 541卷 / 1-2期

关键词：

D O I：

10.1016/S0021-9673(01)95981-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Several different samples and three stationary phases of varying polarity have been examined for changes in band spacing as a function of temperature. The results of these studies have been expressed as a relative variability in the temperature coefficients of retention (S) for adjacent bands. A theoretical analysis suggests that useful changes in band spacing vs. temperature (or heating rate) can be expected when the difference in S values (DELTA-S) for two bands is larger than 1 to 2%. The samples studied exhibited variations in average values of DELTA-S of 0.6-6%. This suggests that optimizing the (isothermal) temperature or (programmed) heating rate of a gas chromatographic separation will often be advantageous.

引用

页码：21 / 34

页数：14

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