Residual Characteristics of Lambda-cyhalothrin and Deltamethrin in Lettuce

상추 중 Lambda-cyhalothrin과 Deltamethrin의 잔류 특성

  • Yun, Sang-Soon (Chungbuk Provincial Office, National Agricultural Products Quality Management Service) ;
  • Shim, Seok-Won (Chungbuk Provincial Office, National Agricultural Products Quality Management Service) ;
  • Kim, Kwang-Ill (Chungbuk Provincial Office, National Agricultural Products Quality Management Service) ;
  • Ahn, Myung-Soo (Chungbuk Provincial Office, National Agricultural Products Quality Management Service) ;
  • Youn, Teak-Han (Chungbuk Provincial Office, National Agricultural Products Quality Management Service) ;
  • Kim, Yun-Jeong (Chungbuk Provincial Office, National Agricultural Products Quality Management Service) ;
  • Hwang, Hyo-Seon (Chungbuk Provincial Office, National Agricultural Products Quality Management Service) ;
  • Jin, Chung-Woo (Chungbuk Provincial Office, National Agricultural Products Quality Management Service) ;
  • Han, Sang-Kuk (Chungbuk Provincial Office, National Agricultural Products Quality Management Service) ;
  • Oh, Sang-Kyun (Chungbuk Provincial Office, National Agricultural Products Quality Management Service) ;
  • Shin, Jong-Ho (Chungbuk Provincial Office, National Agricultural Products Quality Management Service) ;
  • Jin, Yong-Duk (Department of Crop Life Safety, National Institute of Agricultural Science and Technology) ;
  • Lee, Eun-Young (School of Applied Life Science and Environment, College of Agriculture, Life and Environmental Sciences, Chungbuk National University)
  • 윤상순 (국립농산물품질관리원 충북지원) ;
  • 심석원 (국립농산물품질관리원 충북지원) ;
  • 김광일 (국립농산물품질관리원 충북지원) ;
  • 안명수 (국립농산물품질관리원 충북지원) ;
  • 윤택한 (국립농산물품질관리원 충북지원) ;
  • 김윤정 (국립농산물품질관리원 충북지원) ;
  • 황효선 (국립농산물품질관리원 충북지원) ;
  • 진충우 (국립농산물품질관리원 충북지원) ;
  • 한상국 (국립농산물품질관리원 충북지원) ;
  • 오상균 (국립농산물품질관리원 충북지원) ;
  • 신종호 (국립농산물품질관리원 충북지원) ;
  • 진용덕 (농업과학기술원 농산물안전성부) ;
  • 이은영 (충북대학교 농업생명환경대학 응용생명환경학부)
  • Published : 2008.06.30

Abstract

This study was carried out to investigate the residue patterns of two insecticides, lambda-cyhalothrin and deltamethrin, commonly used for lettuce, under greenhouse conditions. The pesticides were sprayed with dilution of recommended and doubled doses onto lettuce. Their detection limits were $0.001\;mg{\cdot}kg^{-1}$ and mean recoveries at the fortification levels of 0.2 and $1.0\;mg{\cdot}kg^{-1}$ were from 101.17 to 104.25 and from 99.70 to 103.77%, respectively. The pesticides were gradually decreased in lettuce with time. Biological half-lives of lambda-cyhalothrin and deltamethrin were 1.7 and 1.4 days at the recommended dose and 1.8 and 1.4 days at the doubled dose, respectively. Initial residue amounts of lambda-cyhalothrin and deltamethrin at the recommended and doubled doses exceeded their MRLs. However, the residue levels of the pesticides in the crop sampled at harvest were less than their MRLs. The ratios of the estimated daily intake (EDI) to acceptable daily intake (ADI) by intake the crop harvested 10 days after spraying were less than 1% of their ADIs.

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