Paper Information

Title: 

DETERMINATION OF ORGANOCHLORINE PESTICIDES RESIDUE IN WATER OF GARGAR RIVER AT SHUSHTAR CITY OF KHUZESTAN PROVINCE

Type: POSTER
Author(s): NAZARI Z.,BEHFAR A.,RABIEIRAD M.H.,RAEISI GH.,AMIRPOUR R.,DADFAR A.
 
 
 
Name of Seminar: IRANIAN CONGRESS OF PHYSIOLOGY AND PHARMACOLOGY
Type of Seminar:  CONGRESS
Sponsor:  PHYSIOLOGY AND PHARMACOLOGY SOCIETY, MASHHAD UNIVERSITY OF MEDICAL SCIENCE
Date:  2007Volume 18
 
 
Abstract: 

At present extensive attention is paid by EPA and WHO on pesticide residues in water sources and possibility of harm to human following long term low- levels exposure to them and consequent effects of chroning poisoning. In order to investigate the status contamination of water of Gargar river by selected organochlorine pesticides {OP'DDT, PP'DDT, alderin, dieldrin, heptachlor, (a, , g, d) HCH, (a, ) endosulfan and metoxychlor), one composite sample was taken every month which comprising 20 grab samples in 2005. Water samples were acidified to pH<2 and extracted three times with n-hexane, concentrated using a rotary vacuum evaporator for Florisil column chromatography cleanup and fractioned by elution with petroleum ether 94% and diethyl ether 6% (fraction 1) and petroleum ether 85% and diethyl ether 15% (fraction 2). Finally the elutes concentrated o dryness using rotary vacuum evaporator and then the residues were dissolved in hexane and analyzed by GC-ECD. In general all of 12 investigated organochlorine pesticides were detected. Regardless to the kind of organochlorine pesticide the most pollution was seen in August with 82.99 and the least contaminated water of Gargar River were in March with 14.180µg/L. The highest and lowest mean concentration of 12 investigated pesticides were belong to a-Endosulfan and pp'DDT in 16.78 and 0.0166 mg/L respectively.

 
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