Development and Validation of New Clean-Up Approach for 21 Organo-Chlorinated Pesticides (OCPs)
 
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Kuwait Institute for Scientific Research (KISR), Deputy Director General Office for Research, 13109 Safat, P.O. Box 24885, Kuwait
CORRESPONDING AUTHOR
Amal Al-Rashdan   

Kuwait Institute for Scientific Research (KISR), Deputy Director General Office for Research, 13109 Safat, P.O. Box 24885, Kuwait
Publication date: 2017-10-05
 
Eurasian J Anal Chem 2014;9(2):66–78
 
KEYWORDS
ABSTRACT
A validated procedure was developed for the separation and clean-up of Organo-Chlorinated Pesticides (OCPs) extracted from fish samples, using different adsorbent materials and different solvents composition. Pressurized liquid extraction (PLE) has been utilized for the extraction of OCPs. PLE provides one of the best alternative to conventional extraction methods. The different adsorbent materials as well as solvents composition were evaluated for the best clean-up steps of OCPs extracted from fish samples. Among the eight examined adsorbent materials, florisil and alumina were selected with hexane: ethylacetate (8:2, v/v) solvent mixture throughout the experiment. The highest recoveries were obtained (75-99.8 %). Detection was performed by GC-MS in Negative Chemical Ionization (NCI) mode, due to its high sensitivity and selectivity to chlorinated compounds. Bio-Beads SX-3 Based on Gel permeation Chromatography (GPC) was utilized for the removal of fat. The accuracy of the method (n= 5) is expressed as recovery (%) that was calculated to be between 56% and 98%, and the precision of the method is expressed as Relative Standard Deviation (RSD), that was obtained to be between 5% and 28 %.
 
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