Abstract
In pH 2.72 HCl-NaAc buffer solution at room temperature and in the presence of a nanocatalyst of Fe3O4 nanoparticles, potassium persulfate rapidly oxidized folic acid (FA) to form a product with strong fluorescence at 446 nm. The analytical conditions were considered, and a simple, rapid, and accurate fluorescence method was proposed for the determination of 0.007–8.0 mg/L FA, with a detection limit of 2.0 ng/mL FA. This method was applied to the analysis of FA in a real sample with satisfactory results that agree with the HPLC results.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (No. 21165005, 21075023) and the project of State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China (No. CMEMR2011-10).
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Ouyang, H., Wang, L., Tian, J. et al. A Simple and Sensitive Nanocatalytic Fluorescence Method for the Determination of Folic Acid in Foods Using Fe3O4 Nanoparticle-K2S2O8 System. Food Anal. Methods 6, 76–81 (2013). https://doi.org/10.1007/s12161-012-9416-4
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DOI: https://doi.org/10.1007/s12161-012-9416-4