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Determination of Inorganic Arsenic in a Wide Range of Food Matrices using Hydride Generation - Atomic Absorption Spectrometry.
Published on: September 1, 2017
Enhanced determination of iodine by molecular absorption spectrometry after dispersive solid-phase extraction with
Magdalena Krawczyk-Coda1, Mariusz Pietrowski2, Ewa Stanisz1
1Poznan University of Technology, Faculty of Chemical Technology, Berdychowo 4, 60-965 Poznań, Poland..
Abstract:
The determination of iodine after the enrichment on solid sorbent ZrO2 in the combination with molecular absorption spectrometric (MAS) detection is presented. The detection limit and enrichment factor obtained were 0.009 μg mL-1 and 9, respectively. The main extraction parameters were: sample pH = 3, 40 mg of ZrO2 and 300 μL of eluent (4 % C6H8O6). The correctness was evaluated by analyzing the matrix-compatible standard reference materials (SRMs). The iodine and selenium contents measured in these reference materials were in satisfactory agreement with the certified values according to the t-test for a 95 % confidence level. The method was used to determine iodine in food samples. To discuss the impact of iodine on human health, the selenium content was also determined. The results obtained can provide consumers with information on the iodine and selenium content of food, and thus help them to better control the functioning of important organs such as the thyroid.
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