COLORIMETRIC DETERMINATION OF TRACE METALS IN BEER AND IN BREWING MATERIALS IV. DETERMINATION OF COPPER
Open Access
- 2 January 1953
- journal article
- research article
- Published by The Institute of Brewing & Distilling in Journal of the Institute of Brewing
- Vol. 59 (1), 52-55
- https://doi.org/10.1002/j.2050-0416.1953.tb02711.x
Abstract
Copper is determined in the residue obtained after wet oxidation of beer or brewing materials as described in a previous paper (this Journal, 1951, 363). When the residue is treated with sodium diethyldithiocarbamate, a compound is formed which is soluble in carbon tetrachloride giving a yellow solution. The yellow colour of this solution may be matched by glass slides in a Lovibond tintometer or evaluated in a photoelectric colorimeter. The copper is determined by reference to standard curves.Keywords
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