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
ORIGINAL RESEARCH
Waste Frying Oil as Substrate for Lipase
Production by Geotrichum candidum Strains
A. Rywińska1, D. Witkowska1, P. Juszczyk1, W. Rymowicz1, A. Kita2
Pol. J. Environ. Stud. 2008;17(6):925-931