A comparative study of titrimetric and gravimetric methods for determination of organic carbon in soil

A - Papers appearing in refereed journals

Kalembasa, S. J. and Jenkinson, D. S. 1973. A comparative study of titrimetric and gravimetric methods for determination of organic carbon in soil. Journal of the Science of Food and Agriculture - jsfa. 24 (9), pp. 1085-1090.

AuthorsKalembasa, S. J. and Jenkinson, D. S.
Abstract

Two gravimetric procedures for determining carbon in soil, one a dry combustion method and the other a wet oxidation method, were compared with seven variants of the titrimetric method, all based on titrimetric determination of the dichromate consumed when soil is heated with dichromate and acid. The coefficients of variation of the methods were, as percentages: dry combustion, 0.76; wet combustion, 1.1; Tinsley I, 1.3; Tinsley II, 1.8; Tinsley III, 0.8; Anne, 1.3; Mebius, 1.8; Walkley and Black, 1.6 and Tyurin, 8.5. Taking the dry combustion method as standard, the percentage recovery of organic carbon from 22 soils was 99 for wet combustion, 95 for Tinsley I, 95 for Tinsley II, 97 for Tinsley III, 93 for Anne, 95 for Mebius, 77 for Walkley and Black and 93 for the Tyurin method. A variant of the Tinsley method (Tinsley III) is proposed as a quick procedure when the accuracy of dry combustion is not essential.

Year of Publication1973
JournalJournal of the Science of Food and Agriculture - jsfa
Journal citation24 (9), pp. 1085-1090
Digital Object Identifier (DOI)doi:10.1002/jsfa.2740240910
Open accessPublished as non-open access
Output statusPublished
Publication dates
Print01 Sep 1973
Online09 May 2006
Publication process dates
Accepted11 May 1973
Copyright licensePublisher copyright
PublisherWiley
ISSN0022-5142

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