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THE INFLUENCE OF IRON ON THE STABILITY OF SOIL ORGANIC MATTER DURING PEROXIDATION
Author(s) -
OADES J. M.,
TOWNSEND W. N.
Publication year - 1963
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1963.tb00938.x
Subject(s) - chemistry , organic matter , acetylacetone , oxidizing agent , exothermic reaction , hydrogen peroxide , inorganic chemistry , pyrophosphate , sodium dithionite , environmental chemistry , organic chemistry , enzyme
Summary The oxidation of soil organic matter by hydrogen peroxide is shown to be incomplete, the resistant organic materials causing sharp exothermic reactions at 300–340°C. during differential thermal analysis in an atmosphere of oxygen. Removal of the materials responsible for these exothermic reactions by treatments with sodium dithionite, sodium pyrophosphate, and acetylacetone followed by determination of iron in the acetylacetone extracts shows that iron is responsible for the stability of the organic materials, which are probably artefacts produced during the oxidative degradation of the soil organic matter.