토양 및 수용액조건에서와 자외선조사시의 bifenthrin의 주 분해대사산물을 확인하고 토양중 에서의 용탈을 조사한 결과는 다음과 같다. 토양 및 수용액조건에서와 자외선조사시 bifenthrin의 일차분해산물은 2-methylbiphenyl-3-ylmethanol로 HPLC, UV, Mass 및 NMR로 확인되었으며 bifenthrin의 주 분해경로는 ester결합의 가수분해 작용으로 나타났다. 자외선 조사시 bifenthrin은 첨가농도 10,100ppm에서 24시간만에 거의 분해 소실되었으며 1,000ppm일 때는 약 80%정도 분해되었다. Soil TLC 및 column상에서 bifenthrin은 거의 용탈되지 않고 표토에 존재하였다.
This study was conducted to know degradation products of the synthetic pyrethroid insecticide bifenthrin under soil, aqueous solution and UV-light irradation, and know its movement by leaching in soil. The major degradation product of bifenthrin was identified with 2-methylbiphenyl -3-y1 methanol by HPLC, UV, Mass and NMR under soil, aqueous solution and UV-light irradiation, The main degradation route was hydrolysis of the ester linkage. On exposure to UV-light, bifenthrin was decomposed almost completely in concentrations of 10 and 100 ppm in 24 hr but decomposed about 80% in 1,000 ppm. Bifenthrin was immobile in soil column system and on soil thin-layer chromatography system. Mostly bifenthrin remained in the 0-2.0㎝ layer of soil column and soil TLC.
