Analysis of organophosphorus and pyrethroid pesticides in organic and conventional vegetables using QuEChERS combined with dispersive liquid-liquid microextraction based on the solidification of floating organic droplet
作者： Xuejin Mao , Yiqun Wan , Zhanming Li , Lin Chen , Hueylee Lew
DOI: 10.1016/J.FOODCHEM.2019.125755
关键词:
摘要: Abstract A simple, sensitive and environmentally-friendly method for determining organophosphorus pyrethroid pesticides in vegetables was developed to better evaluate the risk of consuming them. The were extracted, purified concentrated by using QuEChERS (quick, easy, cheap, effective, rugged safe method) combined DLLME-SFO (dispersive liquid–liquid microextraction based on solidification floating organic droplet) techniques. key parameters optimized through orthogonal array experimental design statistical analysis. linearity calibration curves satisfied matrix-matched standard solution with R2 ≥ 0.99. limits detection quantification 0.3–1.5 0.9–4.7 μg/kg, respectively. average recoveries 61.6–119.4% relative deviations
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