Polarographic analysis of aliphatic aldehydes with N-alkylhydroxylamines
1966 Volume 15 Issue 12 Pages 1350-1355
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1966 Volume 15 Issue 12 Pages 1350-1355
Polarographic determination of saturated aliphatic aldehydes in aqueous solution was attempted by use of following four compounds: methyl-, isopropyl-and tert-butyl hydroxylamines and α-hydroxyaminovaleronitrile.
(i) Satisfactory results were not obtained by methyl-and tert-butyl hydroxylamines.
(ii) Isopropyl hydroxylamine in its concentration 1.5 × 10-1 M showed a linear relation between the wave height developed and aldehyde concentration of about 10-510-3M at pH 3.04.0 Less than 10-2 M of ketones did not interfere.
(iii) α-Hydroxyaminovaleronitrile in its concentration 1.0 × 10-1 M showed a linear relation between. the wave height developed and aldehyde concentration of about 10-410-3 M at pH 5.06.0. The interference from ketones became serious when its amount excedes several times of the aldehyde concentration, and separatory determination was difficult. The results were compared with that by Girard T reagent.
