1. Pesticide Residues Research Group, European Union Reference Laboratory (EURL), Department of Chemistry and Physics; University of Almería; 04120 La Cañada de San Urbano Almería Spain
2. IMDEA-Water (Madrid Institute for Advanced Studies-Water), Parque Científico Tecnológico; University of Alcalá; 28805 Alcalá de Henares Madrid Spain
3. National Institute for Agricultural and Food Research and Technology - INIA; 28040 Madrid Spain