 E-mail
for more information
Company's
other products
E-mail
to a colleague
See
similar products
Printer
friendly format
|
|
GPC Cleanup of Olive Oil Prior to Analysis of Organophosphorus Pesticides by GC/PFPD
Introduction
Gel Permeation Chromatography (GPC) is a size-exclusion cleanup process that uses organic solvents and a hydrophobic gel (cross-linked divinylbenzene-styrene copolymer) to separate macromolecules. GPC is a highly effective post-extraction cleanup method for removing high molecular weight interferences such as lipids, proteins, and pigments from sample extracts prior to analysis. Post-extraction GPC cleanup is used extensively for preparation of food and environmental samples prior to analysis for pesticides, fungicides, semivolatiles, and other environmental contaminants. The FDA Pesticide Analytical Manual recommends using GPC for separation of fats and oils from food matrices prior to pesticide analysis by gas chromatography (GC). If sample extracts with high lipid content are injected onto a GC column, the injection port and column can easily become contaminated, resulting in recovery losses and poor chromatography.
For the complete article with images, please click here to view the file in PDF format.
In order to view the PDF file, you must have Adobe's Acrobat Reader installed on your computer, click here to download the reader.
OI Analytical
151 Graham Road
College Station, TX, 77842-9010
|
