S-Space College of Agriculture and Life Sciences (농업생명과학대학) Dept. of Food and Animal Biotechnology (식품·동물생명공학부) Theses (Master's Degree_식품·동물생명공학부)
Metabolism of insecticide bistrifluron in soil
살충제 bistrifluron의 토양대사
- Issue Date
- 서울대학교 대학원
- bistrifluron; Bistriflruon; 호기성 토양대사; Aerobic soil metabolism; 호기성 담수 토양대사; Aerobic flooded soil metabolism
- Thesis (master`s)--서울대학교 대학원 :농생명공학부,2003.
Phenyl)urea] is a novel broad spectrum insecticide which developed by
Dongbu-hannong Chemical Co. (Korea). To elucidate metabolic fate of
bistrifluron, aerobic and aerobic flooded soil metabolism were
investigated with [14C]bistrifluron. The metabolic studies were
conducted for 120 days at a concentration of 0.28 μg/g on loamy soil in
the dark a 22 ±1 oC with flow through system.
The half-life of bistrifluron were approximately 110 days for
aerobic condition and 48 days for aerobic flooded condition,
Under aerobic condition, the metabolites were not observed while
the evolved [14C]carbon dioxide accounted for up to 35.5% of applied
radiocarbon at 120 DAT. Non-extractable bound residue accumulated
up to 8.4% of that applied at 120 DAT under same condition.
Under aerobic flooded condition, [14C]carbon dioxide was not
observed and one metabolite CBU (2-chloro-3,5-bis-trifluroromethylphenyl)-
urea) was observed and identified through LC/MS and NMR after isolation. It showed maximum concentration of 80.8% of applied
radiocarbon at 120 DAT. The non-extractable radioactivity levels did
not increase as the soil aged, accounting for 1.2% of applied
radiocarbon at 120 DAT. The volatiles were not detected during both of
The average material balance over the time course of the study was
93.2-105.9% of applied radiocarbon in both conditions.
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