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A Simple Titrimetric Method for Determination of Inorganic Carbon in Soils
Author(s) -
Bundy L. G.,
Bremner J. M.
Publication year - 1972
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/sssaj1972.03615995003600020021x
Subject(s) - soil water , titration , bottle , carbonate , carbon fibers , standard solution , soil test , chemistry , mineralogy , total organic carbon , environmental chemistry , environmental science , soil science , inorganic chemistry , materials science , chromatography , organic chemistry , composite number , composite material
A simple method of determining inorganic carbon in soils is described. The soil sample is treated with 2 M HCl at room temperature for 16–24 hours in a stoppered bottle containing 2 M KOH in a small beaker, and the CO 2 released from carbonates by this treatment is determined by titration of the KOH solution with standard HCl. The method is accurate and precise, and tests reported indicate that it is not subject to interference by organic soil consituents. It gives quantitative results with carbonate standards, and its results with soils agree closely with those obtained by the methods proposed by Allison and by Anderson and Harris.