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Estimation of DL-glyceraldehyde, dihydroxyacetone, methylglyoxal, and their mixtures by oxidation with sodium periodate

M. Fedoroňko, E. Füleová, and W. Danieliszyn

Institute of Chemistry, Slovak Academy of Sciences, 809 33 Bratislava

 

Abstract:  An anatytical method for the estimation of DL-glyceraldehyde, dihydroxyacetone, methylglyoxal, and their binary and ternary mixtures by oxidation with sodium periodate in unbuffered aqueous media was worked out. Oxidations proceeded at 70°C during 1 hour. On the basis of chemical equations of oxidation of the individual compounds studied, of the unchanged sodium periodate as well as the produced acids and formaldehyde, mathematical relations were derived for calculation of the concentrations of individual compounds also in the mentioned types of mixtures. The error of estimation of individual compounds in the concentration range 5 — 20 mg did not exceed  ± 2%. In the case of binary and ternary mixtures for 20 mg sample, when the concentration range of individual compounds was 20—80%, the relative error of their estimation did not exceed ±10%. In this work, also mechanisms of oxidations with sodium periodate of the estimated compounds are discussed.

Full paper in Portable Document Format: 271a67.pdf

 

Chemical Papers 27 (1) 67–73 (1973)

Thursday, November 21, 2019

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