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Determination of Total Nitrogen and Carbon in Soils by a Commercial Dumas Apparatus
Author(s) -
Stewart B. A.,
Porter L. K.,
Beard W. E.
Publication year - 1964
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1964.03615995002800030019x
Subject(s) - kjeldahl method , soil water , nitrogen , carbon fibers , environmental science , total organic carbon , interference (communication) , organic matter , environmental chemistry , soil science , chemistry , mathematics , computer science , organic chemistry , algorithm , computer network , channel (broadcasting) , composite number
A modified Dumas procedure is presented, which extends its application to soils of high organic matter content. The modification eliminates the interference of CH 4 that often causes values to be from 5 to 20% higher than Kjeldahl values. The instrument used for the Dumas procedure can be easily converted to determine C in soils. Changes necessary for this conversion are presented.