ICP-MS DETERMINATION OF TRACE ELEMENT IN VEGETABLE MODIFICATE FATS
Galya K. Toncheva, Deana L. Georgieva, Ginka A. Antova, Pavel Merdzhanov
Pages: 148-157 Published: 1 Jun 2014
Views: 2,972 Downloads: 1,739
Abstract: Tree types of hydrogenated fats which are used in the industry were tested. The initial trace element content was determined and also its changes during the heat treatment due to short-term or longer stay of the fats in the production container from chrome-nickel steel. Using inductively-coupled plasma-mass spectrometry (ICP MS) the total quantity of the selected metals in the fats was determined: Ti, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ag, Sn and Pb. Was investigated the migration kinetics of Fe and Cr in coating and filling fats and fatty acid composition of the fats at the beginning and end of the observation. Unacceptable changes were not found in the organoleptic characteristics of the fats, resulting from the migration of metals. The amount of the tested toxic metals does not exceed the limit value. An exception is the increased amount of copper in two and nickel in the tree types of fats.