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방사성 추적자에 의한 솔잎혹파리 방제용 살충제 phosphamidon 의 소나무 수간이동 구명 : 1. 소나무 품종 및 계절별 이행
이재구(Jae Koo Lee),이형래(Hyung Rae Lee),경기성(Kee Sung Kyung),변병호(Byung Ho Byun) 한국응용생명화학회 1993 Applied Biological Chemistry (Appl Biol Chem) Vol.36 No.6
In order to elucidate the translocation of the systemic insecticide, phosphamidon (2-chloro-2-diethylcarbamoyl-1-methylvinyl dimethyl phosphate), treated to pine trees against pine leaf gall midges (Thecodiplosis japonensis Uchida et Inouye), [vinyl, carbonyl-^(14)C] phosphamidon was implanted into the trunks of 10-year-old Korean red pine (Pinus densiflora Sieb. et Zucc.) and Japanese black pine (Pinus thunbergii Parl.), respectively. The upward movement rates of the chemical within Korean red pine in July and Japanese black pine in December were ca. 10 ㎝/hr and 2 ㎝/hr, respectively. The original radioactivity level persisted up to 75 days after treatment throughout the whole tree in Korean red pine in July, whereas it did up to 150 days in Japanese black pine in December. The chemical was translocated up to the top at the insecticidal level within 3 days after treatment in July, whereas in December it was within 15 days. The translocation of the chemical was much dependent upon pine tree species and the treated season. Methanol was suitable for the extraction of phosphamidon and its metabolites from pine needles. Autoradiography of the methanol extracts of pine needles collected from the treated pine trees proved that phosphamidon broke down very quickly within pine trees (ca. 80% metabolized within 7 days).
14C - 방사성 추적자에 의한 농약의 토양과 식물체내에서의 행적규명
경기성,이재구 ( Kee Sung Kyung,Jae Koo Lee ) 한국환경농학회 1993 한국환경농학회지 Vol.12 No.3
A few technical methods including lysimeter, micro-ecosystem and soil column experiments which have been used for elucidation of the behaviour of pesticide residues in soil by means of the ^(14)C-radiotracer were introduced. They are essential for the investigation of soil-bound residues of pesticides, and hence the continued development and support in this field are urgently required.