Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Residue Dissipation Patterns of Neonicotinoid Acetamiprid and Thiamethoxam in Swiss Chard for the Harvest Periods under Greenhouse Conditions

시설재배 근대 중 Neonicotinoid계 살충제 Acetamiprid 및 Thiamethoxam의 생산단계 잔류특성

  • Chang, Hee-Ra (Department of Food & Pharmaceutical Engineering, Graduate School of Hoseo University) ;
  • You, Jung-Sun (Department of Food & Pharmaceutical Engineering, Graduate School of Hoseo University) ;
  • Do, Jung-Ah (Pesticide and Verterinary Drug Residues Division, Food Safety Evaluation Department, Ministry of Food and Drug Safety)
  • 장희라 (호서대학교 식품제약공학부) ;
  • 유정선 (호서대학교 식품제약공학부) ;
  • 도정아 (식품의약품안전처 식품의약품안전평가원 잔류물질과)
  • Received : 2018.06.15
  • Accepted : 2018.06.25
  • Published : 2018.06.30
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Abstract

BACKGROUND: Dissipation of acetamiprid and thiamethoxam in greenhouse grown chard samples was evaluated at 5 intervals including the pre-harvest interval after application. This study was conducted to determine the residue levels, the biological half-lives and dissipation rate of acetamiprid and thiamethoxam in chard under controlled conditions. METHODS AND RESULTS: Acetamiprid and thiamethoxam were applied in accordance with good agricultural practices for chard. Chard samples were collected at 0, 1, 2, 3, 5, 7, 10 and 14 days after application. Quantitaion was performed by HPLC-DAD system with C18 column. Limit of quantification (LOQ) of acetamiprid and thiamethoxam were both 0.02 mg/kg for chard. The recovery of acetamiprid and thiamethoxam were 77.8~107.5% and 94.3~108.6% at two concentration levels. The half-lives of pesticide dissipation in chard for two fields were 11.9 and 8.2 days for acetamiprid and 3.6 and 3.3 days for thiamethoxam respectively. The dissipation rate of acetamiprid and thiamethoxam were estimated according to the statistics method with a 95% confidence. CONCLUSION: Dissipation of acetamiprid and thiamethoxam in chard were determined under greenhouse. The concentration of acetamiprid and thiamethoxam in chards at 0 days after application were below specified by Korean MRL. Dissipation rate constant will be useful to set the pre-harvest residue limit for public health and consumer protection.

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References

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