TLEE method of Jansen [1936] for estimating aneurin by measuring the blue fluorescence of the thiochrome produced on oxidation was applied by Westen- brink & Goudsmit [1937, 1] to the estimation of the vitamin in urine for clinical purposes. The specificity of the method seemed doubtful, as the figures they published in a later paper [Westenbrink & Goudsmit, 1938, 1] for the normal 24 hr. .excretion were somewhat higher than those obtained by Harris et al.
No takes yet. Share an insight, caveat, or question.
George Hills (1939) studied this question.
Synapse has enriched one closely related paper. Consider it for comparative context: