Occurrence of Organochlorine and Organophosphorus Pesticides in M. scabra and M. tuberculata Species in Tighra Reservoir, Gwalior, India

2018 ◽  
Vol 30 (3) ◽  
pp. 216-227
Author(s):  
Mamta ◽  
R.J. Rao ◽  
Khursheed Ahmad Wani
Keyword(s):  
Organophosphorus Pesticides ◽  
Organochlorine And Organophosphorus Pesticides

scholarly journals Extraction and Cleanup of Organochlorine and Organophosphorus Pesticide Residues in Fats by Supercritical Fluid Techniques

1997 ◽  
Vol 80 (3) ◽  
pp. 639-646 ◽  
Author(s):  
Marvin L Hopper
Keyword(s):  
Supercritical Fluid ◽  
Pesticide Residues ◽  
Corn Oil ◽  
Organophosphorus Pesticides ◽  
Organophosphorus Pesticide ◽  
Cleanup Procedure ◽  
Diet Study ◽  
Study Methodology ◽  
Integrated Extraction ◽  
Organochlorine And Organophosphorus Pesticides

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.

Determination of organochlorine and organophosphorus pesticides in mango (Mangifera indica L.) in the State of Guerrero, Mexico

2016 ◽  
Vol 259 ◽  
pp. S222
Author(s):  
Y. Villar Encarnación ◽  
Y.A. Polanco García ◽  
M.E. Moreno Godínez ◽  
P. Álvarez Fitz ◽  
G. Huerta Beristaín ◽  
...  
Keyword(s):  
Organophosphorus Pesticides ◽  
Mangifera Indica ◽  
The State ◽  
Organochlorine And Organophosphorus Pesticides

scholarly journals Comparative Determination of Xenobiotics Adsorption

2006 ◽  
Vol 6 (3) ◽  
pp. 54-56
Author(s):  
Mirjana Mijanović ◽  
Asija Začiragić
Keyword(s):  
Organophosphorus Pesticides ◽  
Active Charcoal ◽  
Experimental Animals ◽  
Before And After ◽  
Comparative Determination ◽  
Organochlorine And Organophosphorus Pesticides

Xenobiotic solutions of different concentrations were analyzed by TLC method before and after passing trough the column with adsorbent M and compared with adsorption on the active charcoal. The efficiency of adsorption on adsorbent M was higher, compared to active charcoal. The best adsorption, in the value 90 - 100%, have shown certain organochlorine and organophosphorus pesticides, that were dissolved in non-aqueous solvents. Efficiency of adsorbent M was also proven in vivo, when solutions of tested xenobiotics before adsorption have caused death of experimental animals, and after the adsorption on adsorbent M, all treated animals have survived and had just mild symptoms of poisoning.

Automated Sample Cleanup for Pesticide Multiresidue Analysis. Part II—Design and Evaluation of Column Chromatography Module

1984 ◽  
Vol 67 (4) ◽  
pp. 783-789
Author(s):  
Fred M Gretch ◽  
Joseph D Rosen
Keyword(s):  
Column Chromatography ◽  
Pesticide Residues ◽  
Continuous Flow ◽  
Flow System ◽  
Organophosphorus Pesticides ◽  
Multiresidue Analysis ◽  
Florisil Column ◽  
Continuous Flow System ◽  
Florisil Column Chromatography ◽  
Organochlorine And Organophosphorus Pesticides

Abstract An automated, continuous flow system is described for Florisil column chromatography of pesticide residues from food extracts. Evaluation of the system using 5 common organochlorine and organophosphorus pesticides in 2 crop matrices demonstrates essentially no difference in recovery or precision between automated and currently used manual analyses. The automated procedure uses only 20% of the solvents and adsorbents used in the manual procedure and is 3 times faster.

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