Abstract
A SHORT time ago, J. Weiss1 described in NATURE some experiments on the photochemical bleaching of dyestuffs in presence of ferrous ions, and interpreted the bleaching effects as reduction-oxidation reactions between the excited dyestuff molecules and the ferrous ion, according to the equation As dyestuffs he used brilliant-cresylblue, methylene-blue, thionine, uranine and chlorophyll.
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J. Weiss, NATURE, 136, 794 (1935).
According to Willstätter and Stoll (” Assimilationsbuch”, p. 226), chlorophyll is, moreover, destroyed by addition of acid.
Cf. Willstätter and Stoll, l.c., p. 415.
Cf. H. Gaffron and K. Wohl, Naturwiss., 24, 103 (1936).
K. Weber, Z. phys. Chem., B, 15, 38 (1931); Naturwiss., 23, 849 (1935).
K. M. Brandt, Arkiv för Kemi, 12, No. 7 (1935).
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WEBER, K. Photochemical Reaction of Chlorophyll with Ferrous Ions. Nature 137, 870 (1936). https://doi.org/10.1038/137870b0
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DOI: https://doi.org/10.1038/137870b0
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