Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
권호 표지

Residual Amount of Herbicide Dimepiperate and Hydroxy Dimepiperate in Surface Water and Leachate

제초제(除草劑) Dimepiperate와 그 대사물(代謝物)의 지표수(地表水) 및 침투수중(浸透水中) 잔류량(殘留量)의 경시적(經時的) 변화(變化)

  • Chang, Min-Su (Department of Agricultural Chemistry, College of Agriculture Chonbuk National University) ;
  • Kim, Yun-Tae (Department of Agricultural Chemistry, College of Agriculture Chonbuk National University) ;
  • Moon, Young-Hee (Department of Agricultural Chemistry, College of Agriculture Chonbuk National University) ;
  • Pyang, Hwan-Seung (Department of Agricultural Chemistry, College of Agriculture Chonbuk National University)
  • 장문수 (전북대학교 농과대학 농화학과) ;
  • 김윤태 (전북대학교 농과대학 농화학과) ;
  • 문영희 (전북대학교 농과대학 농화학과) ;
  • 양환승 (전북대학교 농과대학 농화학과)
  • Published : 1993.04.30
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Abstract

This experiment was conducted to determine the residual amount of dimepiperate (S-1-methyl-1-phenylethyl piperidine-1-carbothioate) and dimepiperate-OH(S-1-methyl-1-phenylethyl-4-hydroxy piperidine-1-carbothioate) in surface water and leachate using a lysimeter system. In surface water, the concentration of dimepiperate was 851-897 ppb in the treatment of 3.0 Kg prod/10a. 1,755-1,781 ppb in the treatment of 6.0 Kg prod/10a 1 day after the treatment. The amount of dimepiperate gradually decreased and was infinitesimal from 35 days after the treatment. In leachate dimepiperate was detected from the 45 days, but its concentration was very low, below 1 ppb, compared to that in surface water. The metabolite of dimepiperate, dimepiperate-OH in surface water was detected after the application of dimepiperate. The highest level of 88-173 ppb occurred 2 day after the treatment of dimepiperate and then decreased gradually. The residual concentration was below 2.13 ppb during 28-63 days. In leachate, the concentration of dimepiperate-OH in the different treatments in the range of 0.5-11 ppb from the 21 days, although each treatment showed different detected date and concentration. The detected concentration showed a little change until 63 days.

Dimepiperate 및 그 주요(主要) 대사산물(代謝産物)인 dimepiperate-OH의 지표수(地表水)및 침투수중(浸透水中)의 잔류량(殘留量)을 lysimeter를 사용(使用)하여 약제처리후(藥劑處理後) 63일간(日間)에 걸쳐 경시적(經時的)으로 조사(調査)하였다. Dimepiperate의 지표수중(地表水中) 농도(濃度)는 시용(施用) 1일후(日後)에 3.0Kg/10a시용구(施用區)에서 $851{\sim}897ppb$, 6kg/10a시용구(施用區)에서 $1.755{\sim}1.781ppb$이었고 그 후 경시적(經時的)으로 감소(減少)하여 35일이후(日以後)는 1ppb이하의 극미량(極微量)만이 63일(日)까지 지속되었다. 침투수중(浸透水中)에서 dimepiperate는 약제처리(藥劑處理) 45일(日)이후부터 1ppb이하의 미량(微量)만이 검출(檢出)되기 시작하여 약제처리(藥劑處理) 63일후(日後)까지 큰 변화없이 지속(持續)되었으며 지표수중(地表水中)의 검출량(檢出量)에 비(比)하여 거의 무시할 정도의 극미량(極微量)이었다. Dimepiperate의 주요(主要) 중간대사물(中間代謝物)인 dimepiperate-OH는 dimepiperate표면시용후(表面施用後)부터 지표수중(地表水中)에 검출(檢出)되었고 2일후(日後)에 최고치(最高値) (dimepiperate 3.0Kg/10a처리구(處理區) $88{\sim}159\;ppb$, 6.0Kg/10a처리구(處理區) $135{\sim}173\;ppb$)에 달(達)하였으나, 그후 점점 감소(減少)되었다. Dimepiperate-OH의 경시적(經時的)인 농도감소(濃度減少)는 dimepiperate의 그것과 동일(同一)한 경로(經路)였으나, 35DAT이후부터는 dimepiperate농도(1ppb 이하)보다 dimepiperate-OH농도(2ppb 이하)가 높았다. 침투수중(浸透水中) dimepiperate-OH의 검출(檢出)은 처리량(處理量), 벼이앙 유무(有無)에 따라 달랐으나. 처리(處理) 21일후(日後)부터 검출(檢出)되기 시작하였으며 그 농도(濃度)는 $0.5{\sim}11\;ppb$로 63DAT까지 비슷한 수준(水準)이었다.

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