“…Among those were high performance liquid chromatography (HPLC) (Yen, & Hsieh, 1991;Li et al, 2014), capillary electrophoresis (CE) (Park et al, 2010), ion chromatography (IC) (Cinquina et al, 2004;Palermo, Muscarella, Nardiello, Iammarino, & Centonze, 2013), thin-layer chromatography (TLC) (Naguib, Ayesh, & Shalaby, 1995;Romano et al, 2012) and gas chromatography (GC) (Naila, Flint, Fletcher, Bremer, & Meerdink, 2011). HPLC requires extensive sample preparation, including derivatization of the amines to form non-polar volatile compounds (the highly polaramines tend to ''stick'' to the column and cause ''memory effects'') (Callejón, Sendra, Ferrer, & Pardo, 2013).…”