Control of Heavy Metals in Juice Products

Abstract

The aim of this work was to determine the content of heavy metals Zn, Cd, Pb, Cu and Hg in juices and nectars without mineralization of the samples by Stripping voltammetry method. It was found that all 10 investigated samples of juices and nectars contained Pb and Cu, and the sample juice cherry No. 1, a slight excess of the allowdirect lead levels, normalized TR TS 021/2011 and SanPiN No. 52. Zinc is found in samples 6, 7; mercury, and cadmium in sample 8 of 10 studied samples of juices and nectars. The content of Cd and Hg does not exceed the permissible level regulated by TR CU 021/2011 and SanPiN No. 52, and the content of Zn only in sample 9 (pomegranate juice) is slightly above the acceptable level. The obtained results indicate that the inversionvoltammetric analysis of juices and nectars can be performed without lengthy sample preparation wet mineralization

Keywords

• heavy metals
• juices
• nectars
• voltammetry