Abstract
OUR endeavour to find a chemical method for determining vitamin D in the presence of ergosterol and other sterols led to a colour reaction specific for vitamin D—in so far as this reaction is not given by ergosterol and its irradiation products.
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A communication on the colorimetric method will be published in a separate paper by Mrs. Hariklia Tzoni.
The results of our work on this subject will be published later in a separate paper.
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HALDEN, W., TZONI, H. A Colour Reaction for the Detection and Determination of Vitamin D. Nature 137, 909 (1936). https://doi.org/10.1038/137909b0
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DOI: https://doi.org/10.1038/137909b0
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