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DETERMINATION OF HEAVY METALS CONTENT FROM GRAPES AND MELONS EXTRACTS


VIORICA POPESCU *, ALINA SOCEANU, SEMAGHIUL BIRGHILA, SIMONA DOBRINAS
”OVIDIUS” UNIVERSITY OF CONSTANŢA, CHEMISTRY DEPARTMENT, 124 MAMAIA BLVD., 900527 RO CONSTANŢA, ROMANIA *CORRESPONDING AUTHOR: VPOPESCU@UNIV-OVIDIUS.RO

Issue:

SCSCC6, Volume IX, No. 3

Section:

Volume IX, No. 3 (2008)

Abstract:

Heavy metals are natural components of the Earth’s crust that cannot be degraded or destroyed. As trace elements some of them (e.g. copper, selenium, zinc) are essential to maintain the metabolism of human body, although at higher concentrations they can lead to poisoning. This work is going to present the results obtained from the determinations of grapes and melons extracts. For obtaining the extracts, Soxhlet extraction, maceration and ultrasonic method were used. A Shimadzu atomic absorption spectrometer (Model AA 6200) equipped with air – acetylene flame, was used to determine the Cu, Mn and Zn concentrations. Also, the refraction indices and relative density were measured, using an Abbé refractometer and a picnometer. The obtained results show that the highest Cu and Zn content is in the melons skin, the highest Mn content is in the grapes skin. The refraction indices and the density’s values are very close to that from the Romanian standards. In the last part of this study we are making a comparative analysis with ours previous studies about others fruits extracts heavy metalscontent.

Keywords:

heavy metals, Soxhlet extraction, ultrasonic extraction, atomic absorption spectrometry.

Code [ID]:

CSCC6200809V03S01A0006 [0002404]

Full paper:

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