In:
Journal of AOAC INTERNATIONAL, Oxford University Press (OUP), Vol. 67, No. 5 ( 1984-09-01), p. 869-877
Abstract:
The official AOAC manual Kjeldahl method for determining crude protein in animal feeds, 7.015, uses HgO as a catalyst in the digestion step. Because of environmental considerations, there is considerable interest in alternative catalysts. A collaborative study compares the official HgO-catalyzed method and an alternative using CuS04. Fifty-four samples consisting of blind duplicates of closely matched pairs, representing a range of animal feed materials and 2 standard materials, were analyzed once by each method. Results were returned by 22 laboratories. Means and standard deviations between methods were comparable. The CuS04-catalyzed method has been adopted official first action.
Type of Medium:
Online Resource
ISSN:
0004-5756
DOI:
10.1093/jaoac/67.5.869
Language:
English
Publisher:
Oxford University Press (OUP)
Publication Date:
1984
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