List of Articles Insecticide residue

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  1 - Determination of Diazinon in Water of Rice fields of Amol city by Thin Layer Chromatography Technique
  Reza Arjmandi Mitra Tavakol Mansoreh Shayeghi
  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 pest More

  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. Manuscript profile
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  2 - Deltamethrin and Chloropyrifosresidue determination on greenhouse tomato in Karaj by Solid Phase Extraction
  Shahrzad Mohammadi Sohrab Imani
  Considering the abundant application of pesticides, the subject of pesticides and their exceeded residues on harvested crops is important issue in agriculture. For this purpose, comprehensive and several studies on agricultural products should be done to prevent of ente More

  Considering the abundant application of pesticides, the subject of pesticides and their exceeded residues on harvested crops is important issue in agriculture. For this purpose, comprehensive and several studies on agricultural products should be done to prevent of entering of contaminated samples in using cycle. In this study, among 29 fruits and vegetable markets in Karaj, 10 of them in different parts of the city were considered, and 25 samples were randomly prepared for each specimen, weighing 2 kg. Samples in laboratory were extracted by using Solid Phase Extraction (SPE) and with the help of N method were concentrated and extracts were injected into High Performance Liquid Chromatograph (HPLC), Gas Chromatograph (GC/NPD), GC/Mass Spectrometer (GC/MS) devices for measuring the residue. Obtained data were compared with WHO/FAO and national Maximum Residue Limit (MRL) codex by T-test.The results showed that for chlorpyrifor 6 and 20 numbers (24 and 80%) of samples based on WHO/FAO and MRL codex respective, and for deltamethrin 14 numbers (56%) of samples based on WHO/FAO codex have had exceeded contamination of insectides. Manuscript profile
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  3 - Investigation on residues of Deltametherin and Chlorpyrifos on greenhouse tomatoes
  Sh. Mohammadi S. Imani
  Tomato is a very common agricultural commodity in our country andThe producers use         pesticides frequentely for its pest control.This vegetable is usually presented to market a short time after the last insecticide spraying, More

  Tomato is a very common agricultural commodity in our country andThe producers use         pesticides frequentely for its pest control.This vegetable is usually presented to market a short time after the last insecticide spraying, it is more probable to be contaminated in the time of                          consumption. This study was conducted to measure the safety interval of the two common              insecticides used in greenhouses of Iran, Chlorpyrifos and deltamethrin. Tomato samples cultivated in 2 greenhouses with the design pattern of randomized complete block with 3 replicates. For      deltametherin within one hour and 1, 2, 3, 4, 5, 7, 10, 15 days after spraying and for Chlorpyrifos within one hour and 1, 3, 5, 7, 10, 15, 20, 30 days after spraying sampling was performed. Samples in laboratory were extracted by using SPE (Solid Phase Extraction) and with the help of Nitrogen were concentrated and extracts were injected for measurement into HPLC (High Performance    Liquid Chromatograph), GC (Gas Chromatograph), GC/MS(GC/Mass Spectrometer) devices. Data were compared with WHO/FAO and Recovery results were 101% and 94% for Chlorpyrifos and deltametherin as respectively also results showed that deltametherin has the php about 3 days and Chlorpyrifos has the php near 15 days in greenhouse condition has been studied. However, to get the post harvest period under farm condition more studies are needed. Manuscript profile