Determination of Diazinon in Water of Rice fields of Amol city by Thin Layer Chromatography Technique

Subject Areas : environmental management

Reza  Arjmandi ¹ ()
Mitra  Tavakol ² ()
Mansoreh  Shayeghi ³ ()

Received: 2008-04-08 Accepted : 2008-07-10 Published : 2010-06-22

Keywords: Diazinon, Insecticide residue, Water pollution, Rice Field, Thin– Layer- Chromatography,

Abstract :

Increasing growth of population, undesirable economic situations of the world especially the third world, shortage of foodstuffs, hungriness, illness, they are all problems to be solved from economical and agricultural aspects. Protecting agricultural products from pests and diseases which inflicts considerable damage to farmers and cultivators each year which is another puzzle to be played and sorted. For this purpose, each year repeated, irregular and uninformed pesticides sprayings are carried out too many times which unfortunately cause resistance of pests against these drugs as well as environmental pollution and it can disaffect other live creatures. It is therefore necessary that more extensive research to be performed on agricultural pesticides and their relative health sciences in the light of bioenvironmental remarks. Mazandaran province is one of the agricultural poles of our country. Diazinon is one the most consumed agricultural pesticides in order to destroy the pests in this region. In this research study of residua of pesticide (Diazinon) in water, Rice field in Amol city, Mazandaran province was performed in year 2007. Findings:  The sampling was carried out on an accidental basis and the samples were taken from each station from the whole width of the river at each interval and mixed and studied the primary experiment and extractions which were carried out by using di-cholero methane and Acetone and finally the amount of pesticide residue was determined by using the H.P.T.L.C (High Performance Thin Layer Chromatography) method and CATS-4 software. According to the ANOVA, trails were in statistical analysis .Time of sampling of water was reported in one day after poisoning. Results show: Diazinon insecticide: this insecticide is used to destroy the stem boring caterpillar of Rice and Citrus tree pests frequently and was observed in the sampling stations 1 and 4 for 2 weeks after poisoning and in station 2 and 3 for one month after poisoning and in station 5 up to second month after application. The greatest amount of Diazinon poisons in station 1 was 1.14ppm which was greater than European Standard. This study cleared physical and chemical properties of the studied insecticides، such as fumigation quality، ecological conditions and type of soil، cause the decrease and finally disappearance of insecticides during the period of plant growth.