Abstract
VARIOUS physico-chemical and chemical methods have been used for the determination of vanillin. Of the volumetric methods1, the oxime method has been modified in many ways, whereby either the quantity of the hydrochloric acid set free in the reaction of hydroxylamine hydrochloride with vanillin, or the quantity of the unreacted hydroxylamine, is titrated visually or potentiometrically. Colorimetric methods are based on the slight reducing capacity of phenols2, the polarographic methods3 on the reduction of the aldehydic group of vanillin.
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DAVÍDEK, J. Polarographic Determination of Vanillin. Nature 190, 1003 (1961). https://doi.org/10.1038/1901003a0
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DOI: https://doi.org/10.1038/1901003a0
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