Indirect spectrophotometric determination of arbutin, whitening agent through oxidation by periodate and complexation with ferric chloride.

@article{Barsoom2006IndirectSD,
  title={Indirect spectrophotometric determination of arbutin, whitening agent through oxidation by periodate and complexation with ferric chloride.},
  author={B N Barsoom and Amr M Abdelsamad and Noushin Adib},
  journal={Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy},
  year={2006},
  volume={64 4},
  pages={844-52}
}
A simple and accurate spectrophotometric method for the determination of arbutin (glycosylated hydroquinone) is described. It is based on the oxidation of arbutin by periodate in presence of iodate. Excess periodate causes liberation of iodine at pH 8.0. The unreacted periodate is determined by measurement of the liberated iodine spectrophotometrically in the wavelength range (300-500 nm). A calibration curve was constructed for more accurate results and the correlation coefficient of linear… CONTINUE READING
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