포도의 재배기간 중 살충제 bifenthrin의 생산단계 농약잔류허용기준의 설정

Establishment of Pre-Harvest Residue Limit (PHRL) of Insecticide Bifenthrin during Cultivation of Grape

  • 김성우 (서울대학교 농생명공학부) ;
  • 이은미 (서울대학교 농생명공학부) ;
  • ;
  • 박희원 (서울대학교 농생명공학부) ;
  • 이혜리 (서울대학교 농생명공학부) ;
  • 류명주 (서울대학교 농생명공학부) ;
  • 나예림 (서울대학교 농생명공학부) ;
  • 노재억 (국립농산물품질관리원) ;
  • 금영수 (서울대학교 농생명공학부) ;
  • 송혁환 (서울대학교 농생명공학부) ;
  • 김정한 (서울대학교 농생명공학부)
  • Kim, Sung-Woo (Department of Agricultural Biotechnology, Seoul National University) ;
  • Lee, Eun-Mi (Department of Agricultural Biotechnology, Seoul National University) ;
  • Lin, Yang (Qingdao Agricultural University) ;
  • Park, Hee-Won (Department of Agricultural Biotechnology, Seoul National University) ;
  • Lee, Hye-Ri (Department of Agricultural Biotechnology, Seoul National University) ;
  • Riu, Myoung-Joo (Department of Agricultural Biotechnology, Seoul National University) ;
  • Na, Ye-Rim (Department of Agricultural Biotechnology, Seoul National University) ;
  • Noh, Jae-Eok (National Agricultural Products Quality Management Service Experiment Research Institute) ;
  • Keum, Young-Soo (Department of Agricultural Biotechnology, Seoul National University) ;
  • Song, Hyuk-Hwan (Department of Agricultural Biotechnology, Seoul National University) ;
  • Kim, Jeong-Han (Department of Agricultural Biotechnology, Seoul National University)
  • 발행 : 2009.12.31

초록

본 연구는 포도 재배 중 살충제 bifenthrin을 살포하고, 살포 후 0, 1, 2, 3, 5, 7, 10, 15일에 포도 시료를 채취하여 bifenthrin을 분석하고 bifenthrin의 생물학적 반감기를 산출한 다음 생산단계 농약 잔류허용기준(PHRL; Pre-Harvest Residue Limit)을 설정하였다. 포도 중 bifenthrin은 acetonitrile과 dichloromethane 으로 추출 및 분배 하여 GC/ECD로 분석 하였다. Bifenthrin의 정량한계는 0.01 ng이었고, 평균 회수율은 0.1 및 $0.5\;mg\;kg^{-1}$ 두 수준에서 각각 $104.08{\pm}1.24%$$92.25{\pm}3.13%$이었다. 포도 중 bifenthrin의 기준량 및 배량 살포시 생물학적 반감기는 각각 21일과 23일로 계산되었다. 또한 증체량에 따른 희석효과가 bifenthrin의 잔류량 감소에 있어 주요인자로 작용하지는 않았다. 잔류감소 회귀식을 이용한 생산단계 농약 잔류허용기준은 수확 10일전 $0.60\;mg\;kg^{-1}$, 또는 5일전 $0.55\;mg\;kg^{-1}$으로 제안하였다.

Pre-Harvest Residue Limit (PHRL) of bifenthrin during cultivation of grape was established by utilizing the dissipation curve and biological half-life of bifenthrin calculated from the analysis of 0, 1, 2, 3, 5, 7, 10, 15 days after treatment of bifenthrin. Grape sample was extracted and partitioned with acetonitrile and dichloromethane, respectively, and bifenthrin was determined with GC/ECD. Limit of quantitation (LOQ) of bifenthrin was 0.01 ng. Recoveries at two fortification levels of 0.1 and $0.5\;mg\;kg^{-1}$ were $104.08\;{\pm}\;1.24$ and $92.25\;{\pm}\;3.13%$, respectively. The biological half-lives of bifenthrin were about 21 days at standard application rate, while, 23 days at double application rate. Dissipation of bifenthrin on grape was not influenced by growth dilution effect. The PHRLs of bifenthrin were recommended as 0.60 and $0.55\;mg\;kg^{-1}$ for 10 and 5 days before harvest, respectively.

키워드

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