Qualitative and quantitative analysis of styrene and its various oligomers by liquid chromatography

被引：2
|
作者：
ElMansouri, H
Yagoubi, N
Ferrier, D
机构：
[1] Laboratoire de Chimie Analytique, Faculté de Pharmacie, 92296 Chatenay-Malabry, 5, Rue J.B. Clément
来源：
JOURNAL OF CHROMATOGRAPHY A | 1997年 / 771卷 / 1-2期
关键词：
styrene; oligomers;
D O I：
10.1016/S0021-9673(97)00124-6
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
Two polystyrenes (crystal PS 1 and choc PS 2) were tested to determine the composition of low-molecular-mass products. The RP-HPLC method shows clearly, in both polystyrenes, two oligomeric entities: higher-molecular-mass (n>5) and lower-molecular-mass (n<5). The ratio between fractions exhibits respectively the same value (1/4) in PS 1 and PS 2. However it is logical that the total oligomeric fraction in PS 1 was larger than in PS 2. In addition, the styrene level in polystyrene crystal determined by RP-HPLC coupled with gel permeation chromatography (GPC) was 2500 mg/kg. This technique exhibits a satisfactory recovery (79+/-5%). Styrene could not be determined in polystyrene choc. Automation of combined GPC-RP-HPLC, in the future, will permit quantification of the lower styrene levels in commercial packaging polystyrene.
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页码：111 / 118
页数：8
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