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Determination of exchangeable calcium in soils containing calcium carbonate
Author(s) -
Tobia S. K.,
Milad N. E.
Publication year - 1956
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740070503
Subject(s) - calcium carbonate , calcium , chemistry , potassium , carbonate , soil water , extraction (chemistry) , sodium , potassium carbonate , inorganic chemistry , mineralogy , environmental chemistry , geology , soil science , chromatography , organic chemistry
Previously reported methods for determination of exchangeable calcium in soil, involving extraction with solutions of sodium, potassium or ammonium chloride or shaking with a carbonate solution, are critically reviewed and their sources of error discussed. A new procedure is recommended in which the exchangeable calcium is extracted with a O‐2N‐KC1 solution previously brought into equilibrium with solid calcium carbonate.