ORIGINAL RESEARCH
Preparation of Samples for Determining
Heavy Metals Fe and Mn in Vegetable Oils:
a Comparison of Different Extraction Methods
Piotr Szyczewski1, Marcin Frankowski1, Anetta Zioła-Frankowska2, Jerzy Siepak3,
Tomasz Szyczewski4, Paweł Piotrowski4
Pol. J. Environ. Stud. 2015;24(6):2647-2654