Pollution by organochlorine and organophosphorus pesticides residues in watercourses of some Egyptian governorates with reference to the distribution of macroinvertebrates

2020 ◽  
pp. 1-26
Author(s):  
Sara S. M. Sayed ◽  
Asmaa Abdel-Motleb ◽  
Hassnaa A. Saleh ◽  
Rania M. Abd El-Hamid ◽  
Ahmed Abdel Kader ◽  
...  
Keyword(s):  
Organophosphorus Pesticides ◽  
Pesticides Residues ◽  
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.

Application of graphene for the SPE clean-up of organophosphorus pesticides residues from apple juices

2013 ◽  
Vol 37 (1-2) ◽  
pp. 99-105 ◽  
Author(s):  
Qiang Han ◽  
Zonghua Wang ◽  
Jianfei Xia ◽  
Xiaoqiong Zhang ◽  
Hongwu Wang ◽  
...  
Keyword(s):  
Organophosphorus Pesticides ◽  
Pesticides Residues

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
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