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[en] The investigation of γ-ray influence on residues dimethoate insecticides in tomato, was carried out. Tomatoes were soaked into solution of dimethoate insecticides, at concentration of 100; 200; 300; and 400 ppm for 3 minutes. Then the tomatoes were dried at room temperature, after, drying the tomatoes were packed using aluminium foil, and kept for 1 week. Pack, of tomatoes the irradiated with γ-ray at 0; 0.5; 1.0; and 1.5 kGy dose. The residues of insecticide dimethoate was determined by extracting of tomatoes using ethyl acetate solvent and analyzed by Chromatography Gas using Flame Photo Detector. The result showed that dimethoate insecticide residues decreased from 9.74 ppm - 30.56 ppm ranges to become 0.0096 ppm-0.0294 ppm at irradiation of 0.5 kGy dose; 0.0049 ppm - 0.0202 ppm at irradiation of 1.0 kGy; 0.0072 ppm - 0.0152 ppm at irradiation of 1.5 kGy dose, while due a 7 days storage a decrease of only 8.24 ppm - 24.19 ppm occurred. (author)
Source
Singgih Sutrisno; Sofyan Yatim; Pattiradjawane, EIsje L.; Ismachin, Moch; Mugiono; Marga Utama (National Nuclear Energy Agency, Jakarta (Indonesia)) (eds.); Nelly Dhevita Leswara; Umar Mansur (University of Indonesia, Jakarta (Indonesia)) (eds.); Syamsul Arifin Achmad (Bandung Institute of Technology, Bandung (Indonesia)); Komaruddin Idris (Bogor Agricultural University, Bogor (Indonesia)) (and others); Centre for Research and Development of Isotopes and Radiation Technology, National Nuclear Energy Agency (Indonesia); 323 p; ISBN 979-3558-03-2; 
; Feb 2004; p. 139-145; The Scientific Meeting on Research and Development of Isotopes Application and Radiation; Seminar Ilmiah Penelitian dan Pengembangan Aplikasi Isotop dan Radiasi; Jakarta (Indonesia); 17-18 Feb 2004; Also available from Center for Development of Nuclear Informatics, National Nuclear Energy Agency, Puspiptek Area, Fax. 62-21-7560923, PO BOX 4274, Jakarta (ID); 6 refs.; 6 figs.
; Feb 2004; p. 139-145; The Scientific Meeting on Research and Development of Isotopes Application and Radiation; Seminar Ilmiah Penelitian dan Pengembangan Aplikasi Isotop dan Radiasi; Jakarta (Indonesia); 17-18 Feb 2004; Also available from Center for Development of Nuclear Informatics, National Nuclear Energy Agency, Puspiptek Area, Fax. 62-21-7560923, PO BOX 4274, Jakarta (ID); 6 refs.; 6 figs.