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Eurasian Journal of Analytical Chemistry
Volume 12, Issue 1 (January 2017), pp. 45-53

DOI: 10.12973/ejac.2017.00143a

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Research Article

Published online on Dec 04, 2016

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Metals Determination by Microwave Digestion ICP-OES of Some Dietary Supplements and Diet Products in Turkey

Hale Seçilmiş Canbay, Mahmut Doğantürk

Abstract

Inductively coupled plasma optical emission spectrometry (ICP-OES) analysis was applied to metals concenrations in ten samples of some dietary supplements and diet products in Turkey. The As, Cr, Zn, Pb, Cd, Co, Ni, Hg, Mn, Fe, Al and Cu contents of dietary supplements and diet products were determined using microwave digestion. The digestion method with acid mixture (HNO3 + HCl) was used to break down the organic material of dietary supplements and diet products. The results of analysis showed that the mean level of metals were  Ni 3.34 ± 0.01 µg/g, Zn 41.24 ± 0.63 µg/g, Mn 23.27 ± 0.25  µg/g, Fe 221.10 ± 1.53 µg/g, Al 18.46 ± 0.14 µg/g and Cu 7.76 ± 0.15 µg/g for dietary supplements and diet products. The concentration of other metals and heavy metals was not found sufficiently. Based on the results obtained in the current work has sensitivity, and accuracy. Calibration curves showed a good linearity for all elements (R2>0.999). The quantitation limit ranged 2.5 to 5  µg/L in dietary supplements and diet products. Recoveries were in the range 92.12-102.08%. The results obtained form this study have shown good accuracy and reproducibility.

Keywords: metal, dietary supplements, diet products, ICP-OES


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