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Determination of total carbon in soils by wet combustion
Author(s) -
Enwezor W. O.,
Cornfield A. H.
Publication year - 1965
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.2740160507
Subject(s) - chemistry , chlorine , potassium , gravimetric analysis , soil water , environmental chemistry , acetic acid , phosphoric acid , total organic carbon , potassium dichromate , combustion , carbon fibers , inorganic chemistry , chloride , organic chemistry , geology , soil science , materials science , composite number , composite material
A digestion–purification train using sulphuric–phosphoric acid and potassium dichromate and employing a gravimetric finish is described for the determination of total organic carbon in soils. Interference of volatile mineral acids, chlorine and chromyl chloride (derived from chloride present in the soil) is prevented by using a bubbler containing a solution of sodium acetate, acetic acid and potassium iodide. The results obtained for total carbon in a number of mineral soils were very similar to those obtained by the Pregl dry combustion method.