“…The tendencies in the application of gas chromatography and liquid chromatography to pesticides residues determination in environmental samples and food, together with sample preparation procedures are revised by several authors (Le Doux, 2011;Pareja et al, 2010;Sharma et al, 2010;Yusà et al, 2009). The trends in liquid chromatography-mass spectrometry and liquid chromatography-tandem mass spectrometry development are highlighted in the published in 2007reviews (Kuster et al, 2009Malik et al, 2010;Petrovic et al, 2010;Soler & Picó, 2007). The original research works devoted to OP pesticides analysis applying various chromatographic techniques: gas chromatography-mass spectrometry (Baugros et al, 2008;Chen & Huang, 2006;Cortés-Aguado et al, 2008;Cunha et al, 2009;Filho et al, 2010aFilho et al, , 2010bHassan et al, 2010;Kolberg et al, 2011;Lavagnini et al, 2011;Lesueur et al, 2008aLesueur et al, , 2008bLi et al, 2011b;Libin et al, 2006;López-Feria et al, 2009;Nguyen et al, 2008;Nguyen et al, 2010;Pang et al, 2006;Rodrigues et al, 2010;Silva et al, 2008;Sinha et al, 2006;Toledano et al, 2010;Wang et al, 2007;Wang et al, 2011;Wu et al, 2011;Yang et al, 2011), gas chromatographytandem mass spectrometry (Barco-Bonilla et al, 2010;Camino-Sánchez et al, 2008;Frenich et al, 2006;Fuentes et al, 2008…”