A Comparison of Procedures for Trace Enrichment of Organophosphorus Pesticide Residues from Water

Author(s):  
Z. Fröbe ◽  
V. Drevenkar ◽  
Ž. Vasilić
Talanta ◽  
2010 ◽  
Vol 82 (4) ◽  
pp. 1077-1089 ◽  
Author(s):  
Dipakshi Sharma ◽  
Avinash Nagpal ◽  
Yogesh B. Pakade ◽  
Jatinder Kaur Katnoria

1997 ◽  
Vol 80 (3) ◽  
pp. 639-646 ◽  
Author(s):  
Marvin L Hopper

Abstract A supercritical fluid extraction and cleanup procedure was developed for separating organochlorine and organophosphorus pesticides from fats. Supercritical carbon dioxide modified with 3% (v/v) acetonitrile was used to extract the pesticides at 6O°C and separate the pesticides from the fats at 4000 psi and 95°C on an in-line C? silica-based column. The extraction and cleanup procedure gave good recoveries for 43 of 62 nonpolar to moderately polar organochlorine and organophosphorus pesticides from fats, whereas 49 were recovered through conventional Florisil column cleanup before quantitation. This procedure can extract and clean up pesticide residues from 0.65 g animalbased fat and 1.0 g oils. Coeluted residues in the pesticide fraction ranged from 2.5 mg for butterfat to 0.8 mg for corn oil. Results for samples analyzed with this integrated extraction cleanup procedure were reproducible and comparable with results obtained with the current Total Diet Study methodology.


1990 ◽  
Vol 73 (1) ◽  
pp. 131-132
Author(s):  
Gail Abbott Parker

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