The Korean Journal of Pesticide Science (농약과학회지)

The Korean Society of Pesticide Science (한국농약과학회)
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Dissipation Pattern of Fungicides Boscalid and Pyraclostrobin in Jujube

대추 중 살균제 boscalid와 pyraclostrobin의 잔류 소실 특성

  • 조형욱 ((재)한국건설생활환경시험연구원 바이오융합연구소 환경독성센터) ;
  • 손상현 ((주)크로엔 잔류분석팀) ;
  • 김경진 ((주)크로엔 잔류분석팀) ;
  • 황기준 ((주)크로엔 잔류분석팀) ;
  • 조범행 ((주)크로엔 잔류분석팀) ;
  • 길석주 ((주)크로엔 잔류분석팀) ;
  • 권찬혁 (식품의약품안전처 축산물기준과) ;
  • 문준관 (한경대학교 식물생명환경과학과)
  • Received : 2017.02.23
  • Accepted : 2017.03.09
  • Published : 2017.03.31
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Abstract

Dissipation pattern and biological half-lives of fungicides boscalid and pyraclostrobin were calculated on jujube. The pesticides were sprayed on jujube in two different field at the standard rate, respectively. The raw agricultural commodities were harvested at 0 (2 hr), 1, 3, 5, 7, 10 and 14 days after treatment, and analyzed by HPLC/DAD. The method limit of quantification (MLOQ) was $0.02mg\;kg^{-1}$ for boscalid and pyraclostrobin. The recovery ranged 101.8~109.3% with below 5% of CV (Coefficient of variation) for boscalid and 104.2~115.4% with below 5% of CV for pyraclostrobin. An average initial deposit at field 1 and field 2 samples were observed 0.40 and $0.48mg\;kg^{-1}$ for boscalid and, 0.76 and $0.57mg\;kg^{-1}$ for pyraclostrobin, respectively. The biological half-lives of field 1 and field 2 were 11.0 and 13.2 day for boscalid, and 6.1 and 12.7 days for pyraclostrobin.

대추 중 boscalid와 pyraclostrobin의 잔류량을 조사하여 약제별 잔류소실과 생물학적 반감기를 산출하였다. 노지재배 중인 대추에 안전사용기준 농도로 희석한 boscalid와 pyraclostrobin을 다른 두 지역의 포장에서 각각 살포 후 0 (2시간), 1, 3, 5, 7, 10, 14일에 시료를 채취하여 HPLC/DAD로 분석하였다. 두 시험농약의 방법정량한계는 $0.02mg\;kg^{-1}$이었으며 시험분석법의 회수율 결과, boscalid는 101.8~109.3%, pyraclostrobin은 104.2~115.4%이었다. 저장안정성시험 결과, boscalid는 101.9~106.5%, pyraclostrobin은 104.6~110.6%이었으며 회수율시험 및 저장안정성 시험 결과 CV값이 5% 미만이었다. 대추 중 boscalid의 초기 잔류량은 포장 1에서 $0.40mg\;kg^{-1}$이고 포장 2에서 $0.48mg\;kg^{-1}$이었으며, pyraclostrobin의 초기 잔류량은 포장 1에서 $0.76mg\;kg^{-1}$이고 포장 2에서 $0.57mg\;kg^{-1}$이었다. 대추 중 boscalid의 생물학적 반감기는 포장 1에서 11.0일, 포장 2에서 13.2일 이었으며, pyraclostrobin의 생물학적 반감기는 포장 1에서 6.1일, 포장 2에서 12.7일이었다.

Keywords

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