Gómez-Ramos María Del Mar, Nannou Christina, Martínez Bueno María Jesús, Goday Ana, Murcia-Morales María, Ferrer Carmen, Fernández-Alba Amadeo R
Centro de Innovación y Tecnología COEXPHAL, La Venta del Viso, 04746 La Mojonera, Almería, Spain.
University of Almería, Department of Physics and Chemistry, Agrifood Campus of International Excellence (ceiA3), Ctra Sacramento s/n La Cañada de San Urbano, 04120 Almería, Spain.
Food Chem X. 2020 Feb 5;5:100079. doi: 10.1016/j.fochx.2020.100079. eCollection 2020 Mar 30.
In the last decade, the consumption trend of organic food has increased dramatically worldwide. Since only a few pesticides are authorized in organic crops, concentrations are expected to range at zero or ultra-trace levels. In this context, the aim of the present study was to investigate the need for an improvement in the residue controls at very low concentrations (<0.010 mg kg) and to assess the impact of the scope of the analytical methods for this type of crops. For that purpose, a monitoring study for fruit and vegetable samples covering a wide range of pesticides (3 2 8) at low LOQs (0.002-0.005 mg kg) was developed. The results showed that the impact of applying analytical methods with low LOQs was not very relevant in the majority of the cases. However, a wide scope presented a high influence on this evaluation, especially regarding the inclusion of very polar compounds and metabolites.
在过去十年中，有机食品的消费趋势在全球范围内急剧上升。由于有机作物中仅允许使用少数几种农药，其残留浓度预计为零或超痕量水平。在此背景下，本研究的目的是调查在极低浓度（<0.010 mg/kg）下改进残留控制的必要性，并评估此类作物分析方法范围的影响。为此，开展了一项针对水果和蔬菜样品的监测研究，该研究涵盖了低定量限（0.002 - 0.005 mg/kg）的多种农药（328种）。结果表明，在大多数情况下，应用低定量限分析方法的影响并非十分显著。然而，较宽的分析范围对此评估有很大影响，特别是对于极性很强的化合物和代谢物的纳入。
