Persulfate oxidation of humic acids extracted from three different soils
1984
Martín Martínez, Francisco | González-Vila, Francisco Javier
4 pages, 3 tables, 16 references.
Show more [+] Less [-]Three soil humic acids were degraded by a new mild chemical oxidation method using potassium persulfate at pH 2.0. The method degraded 30-40% of the starting material. The type and relative quantities of the products or fragments released as determined by GC/MS varied with the source of the polymers. Humic acid extracted from an Inceptisol yielded fatty, benzenecarboxylic and phenolic acids; humic acid from a Typic Chromoxerert produced largely dialkyl phthalates, and humic acid from an Humic Haplorthod gave only branched and straight-chain fatty acids. It is suggested that the method may be used to advantage as a first oxidant in a sequential degradation.
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