@article{article_767482, title={Insecticide residue analyses in cucumbers sampled from Çanakkale open markets}, journal={Turkish Journal of Entomology}, volume={44}, pages={449–460}, year={2020}, DOI={10.16970/entoted.767482}, author={Tiryaki, Osman and Çatak, Hayriye}, keywords={Hıyar, insektisit kalıntıları, QuEChERS, risk değerlendirmesi, toksikoloji}, abstract={The aim of this study was to investigate four insecticide residues in cucumbers with the aid of QuEChERS 2007.1 method. For method verification assessment, pesticide-free cucumber matrix was spiked with 0.1, 1 and 10 times of MRL for each pesticide. The QuEChERS-LC-MS/MS analytical method revealed that the detection limits of the insecticides were below the MRLs and the overall recovery of method was 97.7%. These figures were within the SANTE recovery limits (60-140%) and the values specified for the repeatability (≤20%). Cucumbers were collected from six different stands (A-F) at Çanakkale open markets for 6 weeks between 23 November and 28 December 2018. Residues of each sampling time and each stand were assessed. Acetamiprid residue of 257g and 236 µg/kg were detected in week 5 from stand B and in week 2 from stand E, respectively. These values are close to MRL (300 µg/kg). Formetanate hydrochloride residue of the week 3 from stand F (36.3 µg/kg) was more than MRL of 10 µg/kg. Pirimiphos methyl and chlorpyrifos residues were not detected in cucumbers. Theoretical maximum daily intake assessment showed that there was no chronic exposure risk for these four pesticides through cucumber consumption.}, number={4}, publisher={Türkiye Entomoloji Derneği}, organization={Canakkale Onsekiz Mart Universitesi BAP birimi}