أنواع المبيدات و تقدير المتبقيات منها

Abstract EN

The pesticide is any material or component used to protect from pests.

Its toxic effect is related to the chemical structure, which can be divided into 3 types : - Metal pesticides : Sulpher, cupper, zinc, mercury - Vegetal pesticides : advanced and less toxic to the general health - Synthetic organopesticides : organochlorine, organophosphorous, carbamate and pyrothroids.

Pesticides in the soil undergo biological dissociation according to their concentration and chemical structure.

High concentration of the pesticides in the soil may lead to fertility decrease due to destruction of microorganisms by the pesticides.

Many methods are used to analyze the residues of pesticides in plant or soil : - Chromatographic methods : Gas chromatography, gas liquid chromatography and high performance liquid chromatography - Spectroscopy methods : spectrophotometer and mass spectrometer - Isotopic methods : based on tracers technique which is the most sensitive and accurate method and can estimate minor amounts of the pesticides.