Abstract
In the present paper, differential pulse polarography was applied to determine the dithionite content of sugar and loaf sugar samples. The relevant parameters were studied and optimized. Linearity in the optimized conditions pH = 4.6 (sample solution), pulse amplitude = 0.09 V, and mercury drop size = 4 was 5–40 mg/L (R 2 > 0.99). The limit of detection and limit of quantification for standard solution were about 1.40 and 4.66 mg/L, respectively. After optimization, the proposed method was used to determine the analyte in 51 real samples collected from sugar factories in Zanjan, Iran. The sensitivity and accuracy of the proposed method provided acceptable values to determine dithionite in real samples of sugar and loaf sugar. The results showed that the dithionite content in the samples ranged from <1.40 to 13.24 mg/L.
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Acknowledgments
This research was supported by a grant from the vice chancellor for research and technology of Zanjan University of Medical Sciences of Iran in 2013. The authors would like to thank Mr. Hosein Valinejad and Ms. Firozeh Aghajanlo for their contributions to this research.
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Adel Mirza Alizadeh declares that he has no conflict of interest. Mehran Mohseni declares that he has no conflict of interest. Abbas Ali Zamani declares that he has no conflict of interest. Koorosh Kamali declares that he has no conflict of interest. This article does not contain any studies with human or animal subjects.
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Mirza Alizadeh, A., Mohseni, M., Zamani, A.A. et al. Polarographic Determination of Sodium Hydrosulfite Residue (Dithionite) in Sugar and Loaf Sugar. Food Anal. Methods 8, 483–488 (2015). https://doi.org/10.1007/s12161-014-9909-4
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DOI: https://doi.org/10.1007/s12161-014-9909-4