Utilization of fat retainers in supercritical fluid extraction for the selective extraction of polychlorinated biphenyls from a model fat sample

被引：22

作者：

Järemo, M ^{[1
]}

Björklund, E ^{[1
]}

Nilsson, N ^{[1
]}

Karlsson, L ^{[1
]}

Mathiasson, L ^{[1
]}

机构：

[1] Univ Lund, Dept Analyt Chem, S-22100 Lund, Sweden

来源：

JOURNAL OF CHROMATOGRAPHY A | 2000年 / 877卷 / 1-2期

关键词：

fat retainers; polychlorinated biphenyls;

D O I：

10.1016/S0021-9673(00)00160-6

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Two common fat retainers used in supercritical fluid extraction - basic alumina and the silica based adsorbent Florisil - were investigated using lard fat as model material. With a fat retainer in the extraction cell it was possible to obtain fat-free time windows. Activation by heating did not influence the length of the time windows, while deactivation of the retainers with 10% water (w/w) drastically decreased the fat retaining capabilities. The influence of modifier addition was also investigated. Finally, a method was developed, where basic alumina was utilized to selectively extract polychlorinated biphenyls (PCBs) from a model fat sample, containing PCBs, triglycerides and phospholipids. The PCBs could be quantitatively extracted in a totally fat-free time window. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：167 / 180

页数：14

共 23 条

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