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COLORIMETRIC DETERMINATION OF TRACE METALS IN BEER AND IN BREWING MATERIALS VI. DETERMINATION OF MANGANESE
Author(s) -
Andrews J.,
Harrison G. A. F.,
Pierce J. S.
Publication year - 1953
Publication title -
journal of the institute of brewing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.523
H-Index - 51
eISSN - 2050-0416
pISSN - 0046-9750
DOI - 10.1002/j.2050-0416.1953.tb02719.x
Subject(s) - manganese , brewing , potassium periodate , chemistry , residue (chemistry) , periodate , potassium , catalysis , food science , organic chemistry , fermentation
Manganese is determined in the sulphuric acid residue obtained after wet oxidation of beer or brewing materials as described in a previous paper (this Journal , 1951, 363). The manganese present in this residue is oxidized to permanganic acid by heating with potassium periodate, and the pink colour is evaluated photometrically or by visual comparison with standard manganese solutions.