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Total Carbon, Organic Carbon, and Organic Matter

Nelson, D.W., Sommers, L.E.·1982·Agronomy Monographs
DOI 10.2134/agronmonogr9.2.2ed.c29
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Abstract

Total carbon (C) in soils is the sum of both organic and inorganic C. Most organic C is present in the soil organic matter fraction, whereas inorganic C is largely found in carbonate minerals. This chapter describes two dry combustion and one wet combustion procedures for total C analysis. Not all soils contain inorganic C because of dissolution during soil formation of carbonate minerals originally present in parent material. However, organic C is present in all agricultural soils. Total C determinations for soil involve conversion of all forms of C in soils to CO 2 by wet or dry combustion and subsequent quantitation of evolved CO 2 by gravimetric, titrimetric, volumetric, spectrophotometric, or gas chromatographic techniques. Because of the problem associated with determining the organic matter content of a soil, it is strongly suggested that investigators determine and report the organic C concentration as a measure of the organic matter in a soil.

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Metadata

Authors
Nelson, D. W., & Sommers, L. E.
Venue
Agronomy Monographs
Publisher
Wiley
Published
1982-02
Pages
539-579
ISSN
  • 0065-4663 (ISSN-L)
  • 2156-3276
DOI
10.2134/agronmonogr9.2.2ed.c29
OpenAlex
W2590315510
Cited by
9,978
References
0
Type
other
Language
en
Open access
closed

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Nelson, D. W., & Sommers, L. E. (1982). Total Carbon, Organic Carbon, and Organic Matter. Agronomy Monographs. https://doi.org/10.2134/agronmonogr9.2.2ed.c29

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