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Simultaneous micellar liquid chromatographic analysis of seven water-soluble vitamins: optimization using super-modified simplex

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Abstract

A super-modified simplex (SMS) method has been used to optimize the mobile phase used for separation of seven water-soluble vitamins in multivitamin tablets by gradient micellar liquid chromatography (MLC) with ultraviolet (UV) detection at 254, 295, and 361 nm. Effect of column temperature and addition of organic modifier to the mobile phase on separation efficiency were investigated: the appropriate conditions used were a temperature of 35°C and 1-butanol modifier. The sodium dodecyl sulfate (SDS) concentration, pH, and 1-butanol% in the mobile phase were chosen for simultaneous optimization using the SMS method. The optimum mobile phase was found to be 16 mmol L−1 (mM) SDS, 0.02 M phosphate buffer, pH 3.6, and a gradient of 3.5–10% (v/v) butanol. The total analysis time for vitamins was 75 min. The analytical parameters including linearity (r>0.9970), limit of detection (0.12–50 µg mL−1), precision of method (relative standard deviation (RSD) <8.90%), and accuracy obtained by the recovery assay (88–103%) support the usefulness of the proposed method for the determination of the water-soluble vitamins.

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Acknowledgements

The authors gratefully acknowledge support of this work by the University of Isfahan Graduate Office and Research Council and Amin Pharmaceutical Company.

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Authors and Affiliations

  1. Department of Chemistry, University of Isfahan, 81746–73441, Isfahan, Iran

    Ali R. Ghorbani, Fariborz Momenbeik, Jafar H. Khorasani & Mohammad K. Amini

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  1. Ali R. Ghorbani
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  2. Fariborz Momenbeik
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  3. Jafar H. Khorasani
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  4. Mohammad K. Amini
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Correspondence to Jafar H. Khorasani.

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Ghorbani, A.R., Momenbeik, F., Khorasani, J.H. et al. Simultaneous micellar liquid chromatographic analysis of seven water-soluble vitamins: optimization using super-modified simplex. Anal Bioanal Chem 379, 439–444 (2004). https://doi.org/10.1007/s00216-004-2594-1

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  • DOI: https://doi.org/10.1007/s00216-004-2594-1

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