Paper Information

Title: 

DETERMINATION OF ORGANOPHOSPHOROUS INSECTICIDES RESIDUES IN SIMMINE AND MAHABAD RIVER, IRAN (2003)

Type: SPEECH
Author(s): HONARPAJOH K.*,SHAYEGHI M.,REZAYAT M.
 
 *SCHOOL OF PUBLIC HEALTH
 
Name of Seminar: IRANIAN CONGRESS OF TOXICOLOGY
Type of Seminar:  CONGRESS
Sponsor:  SOCIETY OF TOXICOLOGY
Date:  2004Volume 8
 
 
Abstract: 

In order to study the residues of organophosphorous insecticides in Sinninneh and Mahabad rivers, Diazinon an Azinphosmethyl, two most overused pesticides were chosen then river water samples were collected at 12 stations in predetermined time schedule. Thin layer chromatography-scanner was used in this study since it was the best applicable instimental method in area with reasonably high level of sensivity and acceptable recovery. In Simmineh River: peak Diazinon residue (726ppm) detected in station no.2 and still detected up to 0.1 ppm after 3 months at the same station. The highest level belonged to the day after application. Peak Azinphosmethyl residue (890ppm) were observed after the first day of application at station no.2 and still detected up to 0.1ppm after 2 months in the station no.1 and no.2 with 1 and there 0.1 pm value respectively. In Mohabad River: Peak Diazinon residue (575) detected in station no.6 at the first date, peak Azinphosmethyl residue (511ppm) was observed after first day of application at the station no.3. Three months after spraying Diazinon was detectable at stations no.1, 2 and 3 and no residue was detected at other station. Two months after spraying Azinphosmethyl was detectable at station no. 6 (0.1ppm).
The residues were detectable up to 2-3 months for Diazinon and Azinphosmethyl respectively. There was a good correlation with environmental factors such as tempreture, pH of water, amount of rain, physical and chemical properties of pesticides and the time and the method of application.

 
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