DETERMINATION OF ASPHALT MOLECULAR WEIGHT DISTRIBUTIONS BY GEL PERMEATION CHROMATOGRAPHY

被引：42

作者：

SNYDER, LR

机构：

[1] Union Oil Co. of California, Research Center, Brea

来源：

ANALYTICAL CHEMISTRY | 1969年 / 41卷 / 10期

关键词：

D O I：

10.1021/ac60279a028

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The direct determination of asphalt molecular weight distributions by gel permeation chromatography (without obtaining independent molecular weights on separated fractions) presents a number of problems which appear to have been overlooked by previous workers. These include unexpected solution aggregation effects, adsorption of asphalt on the polystyrene gel, and a peculiar dependence of Rl or UV response data on fraction molecular weight. Attention to these various effects allows the rapid, accurate determination of an asphalt molecular weight distribution at minimum cost, using high efficiency gel permeation chromatography in an automated unit. © 1969, American Chemical Society. All rights reserved.

引用

页码：1223 / &

共 10 条

[1]

ALGELT KH, 1968, ADV CHROMATOGR, V7, P3

[2] FRACTIONATION OF ASPHALTENES BY GEL PERMEATION CHROMATOGRAPHY [J].