Sample mass effects on thermal field-flow fractionation retention and universal calibration

被引：12

作者：

Cao, WJ ^{[1
]}

Myers, MN ^{[1
]}

Williams, PS ^{[1
]}

Giddings, JC ^{[1
]}

机构：

[1] Univ Utah, Dept Chem, Salt Lake City, UT 84112 USA

来源：

INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION | 1998年 / 4卷 / 05期

基金：

美国国家科学基金会;

关键词：

thermal FFF; sample mass; retention; universal calibration;

D O I：

10.1080/10236669808009726

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The effect of sample mass on retention in thermal field-flow fractionation (FFF) can be large, becoming more important as the molecular weight increases. Greater retention with increased sample mass is observed beginning at the detection limit of 0.1 mu g of polystyrene in tetrahydrofuran (THF) with higher molecular weight material. Empirical equations have been developed to correct for changes in calibration parameters for the thermal FFF universal calibration curves due to the sample mass effect on polymer retention for polystyrene, polymethylmethacrylate, and polyisoprene in THF.

引用

页码：407 / 433

页数：27

共 19 条

[1] SAMPLE OVERLOADING EFFECTS IN POLYMER CHARACTERIZATION BY FIELD-FLOW FRACTIONATION [J].