Investigation of the dissipation behaviour and exposure of spitotetramat, flonicamid, imidacloprid and pymetrozine in open field strawberries in Egypt

Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2021 Dec;38(12):2128-2136. doi: 10.1080/19440049.2021.1973113. Epub 2021 Sep 15.

Abstract

The dissipation behaviour and the consumer risk assessment of spitotetramat, flonicamid, imidacloprid and pymetrozine in open field strawberries were studied. Insecticides were applied at the authorised levels and the more critical good agricultural practice regimes (GAP). The initial concentrations varied from 0.069 to 1.75 mg kg-1 depending on the compound, while the dissipation half-lives and terminal residues, 14 days from the last applications, were similar. After application according to the authorised pattern the half-lives were 2.8 days for flonicamid and 3.2 days for spitotetramat, imidacloprid and pymetrozine. The dietary risk assessment, performed using the hazard quotient and the EFSA PRIMo model showed no concern to consumer health with exposure values <2% of the acceptable daily intake (ADI) and <32% of the acute reference dose (ARfD) of each compound.

Keywords: Consumer exposure; field trial; kinetic model; residues; risk assessment.

MeSH terms

  • Agriculture
  • Chromatography, Liquid
  • Dietary Exposure / analysis*
  • Egypt
  • Food Analysis*
  • Food Contamination / analysis*
  • Fragaria / chemistry*
  • Insecticides / analysis*
  • Kinetics
  • Neonicotinoids / analysis
  • Niacinamide / analogs & derivatives
  • Niacinamide / analysis
  • Nitro Compounds / analysis
  • Risk Assessment
  • Tandem Mass Spectrometry
  • Triazines / analysis

Substances

  • Insecticides
  • Neonicotinoids
  • Nitro Compounds
  • Triazines
  • Niacinamide
  • imidacloprid
  • flonicamid
  • pymetrozine