Penentuan Kadar Residu Pestisida pada Buah Tomat dengan Bahan Aktif Klorpirifos yang Beredar di Pasar Pagi dan Pasar Sore Padang Bulan Medan Menggunakan Alat Kromatografi Gas

Abstract

Chlorpyrifos is one type of organophosphate insecticides containing phosphate, and broad spectrum . The insecticide is known as insecticides toxic to mammals . Each organophosphates have maximum residue limits on each plant. Determination of pesticide residues in tomatoes with the active ingredient chlorpyrifos was performed using gas chromatography . Gas chromatography equipped with electron catcher detector , and column RTX - 1 MS . From the results obtained residue levels of pesticides in tomatoes from the morning market without treatment 0.303 mg / kg , and tomatoes are washed with running water 0.096 mg / kg , while the tomatoes from the market late without treatment 0.302 mg / kg , and tomatoes washed with running water 0,084 mg / kg , it shows that the levels of pesticide residues in tomatoes does not exceed the maximum residue limits of pesticides that have been identified by the National Standardization ISO 7313 : 2008 on maximum residue limits of pesticides on agricultural crops of tomatoes is 0 , 5 mg / kg .