[1] Minerva S.A. Edible Oils Enterprises, Analytical Laboratory Department, 165 Tatoiou and Odisscos Str, 14452 Metcmorfosis Attica, Greece
[2] N. Asteriadis S.A., Application Department, 56-58 Sp. Trikoupi St, Athens, 10022, Greece
[3] University of Athens, Laboratory of Analytical Chemistry, Department of Chemistry, Panepistimiopolis, Athens, 15771, Greece