Determination of organophosphorus insecticide residues in the rice paddies

In most rice paddies in Mazandaran Province, diazinon is applied to control Chilo suppressalis. Due to the extensive application of insecticides in the rice paddies of the Caspian coasts of Iran, this investigation was carried out on the rice fields in order to obtain the necessary data and informat...

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Bibliographic Details
Published in:International journal of environmental science and technology (Tehran) 2010, Vol.7 (1), p.175-182
Main Authors: Arjmandi, R, Tavakol, M, Shayeghi, M
Format: Article
Language:English
Subjects:
Aquatic Pollution
Chilo suppressalis
Crop residues
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Science and Engineering
Insecticide
Insecticides
Oryza sativa
Rice
Sampling
Short Communication
Soil Science & Conservation
Statistical methods
Thin layer chromatography
Waste Water Technology
Water Management
Water Pollution Control
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Summary:In most rice paddies in Mazandaran Province, diazinon is applied to control Chilo suppressalis. Due to the extensive application of insecticides in the rice paddies of the Caspian coasts of Iran, this investigation was carried out on the rice fields in order to obtain the necessary data and information on the concentration of insecticide residues. A total of 125 samples were taken from five areas of Amol township in 2007. Then, according to the analysis of variance procedures, the water samples were statistically analyzed after the spraying of diazinon. Results indicate that the insecticide was used frequently to control stem boring caterpillar of rice. The residuals of this toxic chemical were observed in the majority of stations from the day after the spraying until one to two months later. The greatest level of diazinon was observed in station 1 in amount of 1.14 ppm. This study revealed that the physical and chemical properties of the studied diazinon such as fumigation characteristic as well as the ecological conditions and soil type influence the reduction and eventual removal of the insecticides during the cultivation and harvest periods.
ISSN:1735-1472
1735-2630
DOI:10.1007/BF03326129