نتایج جستجو برای: pesticides residue

تعداد نتایج: 68175  

Journal: :Journal of chromatography. A 1997
S J Lehotay

This article summarizes research findings involving the supercritical fluid extraction (SFE) of pesticides in food and other tissue matrices. Emphasis is placed on multiresidue analysis of pesticides in nonfatty foods, including some previously unpublished aspects of SFE in this application. Brief overviews of pesticides and traditional multiresidue methods are given, followed by discussion of ...

F. Majidi-Shilsar F. Shakib M. Afshar Mohammadian M. Shokrzadeh-Lamuki S. Esmaeili Z. Almasi

Considering the increasing rice consumption in the world and also the excessive application of pesticides to increase production, an experiment was conducted to determine the pesticide residues and their effects on nitrogen, potassium and phosphorus content of Hashemi, Khazar and Gohar (SA13) rice cultivars, in a factorial design at randomized complete block design with three replications. In t...

Behrouz Janat Hossein Rastegar Iman Moazzami Goudarzi Mannan Hajimahmoodi Maryam Amirahmadi, Nafiseh Sadeghi Shahram Shoeibi

Recently, with increasing public awareness of food safety, developments of some valid and rapidly analytical methods are required for the determination of residual pesticides in crops.This study was conducted on validation of a reliable, accurate and precise method for multi analysis of pesticides residue in melon as a main fruit in Iranian food basket. A reliable, and valid method...

Background and purpose: Pesticides cause general concern due to their possible adverse results on human health. The aim of this study was to investigate different pesticides and also estimating daily intake of their residues in melon and watermelon samples in Kashan, Iran. Materials and methods: In this cross-sectional study, 62 melon and watermelon samples were collected from different fruit ...

هادیان, زهرا, عزیزی, محمدحسین ,

Regarding the public concerns about serious health risks from pesticide, the occurrences of 105 pesticide residues including Organochlorine, Organophosphorus, Organonitrogen, Dicarboximides, Strobilurin, Triazine, Pyrethroids were assessed using a descriptive method in 25 fresh and greenhouse vegetable samples (fresh carrot, greenhouse tomato and cucumber). Ethyl acetate was used for extraction...

Journal: :Journal of agriculture and crops 2023

The study analyzed the effects of pesticides on selected vegetable crops grown in Abakaliki, Ebonyi State Nigeria. pesticide Dichlorvos (DD Force) was used to treat sites planted with Amaranth, cucumber, and okra. Soil samples were randomly collected after 30 days incorporation tested for traces chloride phosphate. results analysis showed that amaranth, okra residue concentration exceeded maxim...

Journal: :journal of physical & theoretical chemistry 2005
syed w. husain vahid kiarostami mohsen morravati m.r tagebakhsh ali roozbahani

phosalone, malathion and diazinon were analyzed in corn oil using solid phase extraction (spe)with lanthanum silicate as a new solid sorbent followed by gas chromatography with nitrogenphosphorus detection (gc-npd). the efficiency of different eluents (methanol, dichloromethane,ethyl acetate, dichloromethane — ethyl acetate (1:1) and ethyl acetate — methanol (1:1)) werecompared for elution of o...

2016
F. Ganjeizadeh Rohani V. Mahdavi M. M. Aminaee

Pesticides are one of the major pollutants in the environment. The residue of pesticides has been reported to be at a critical level in agricultural crops, especially in greenhouse crops. Tomato is considered as an important vegetable in Iranian food basket and is produced in fields and greenhouses. So, the current study aimed to assess diazinon and oxydemeton-methyl levels in tomatoes sampled ...

Journal: :caspian journal of enviromental sciences 0

considering the increasing rice consumption in the world and also the excessive application of pesticides to increase production, an experiment was conducted to determine the pesticide residues and their effects on nitrogen, potassium and phosphorus content of hashemi, khazar and gohar (sa13) rice cultivars, in a factorial design at randomized complete block design with three replications. in t...

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