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Nitric Acid Oxidation of Danish Illuvial Organic Matter
Author(s) -
Hansen E. H.,
Schnitzer M.
Publication year - 1967
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/sssaj1967.03615995003100010023x
Subject(s) - chemistry , benzene , benzoic acid , nitro , nitric acid , organic matter , organic chemistry , medicinal chemistry , alkyl
Organic matter extracted from the Bh horizon of a Danish Podzol was oxidized with 2 N and with 7.5 N HNO 3 . Oxidation with 2 N HNO 3 produced 2.10% nitro phenols and nitro benzoic acids, 0.60% hydroxy benzoic and 3.23% benzene carboxylic acids. The products resulting from oxidation with 7.5N HNO 3 contained 5.50% picric acid, 0.20% hydroxy benzoic and 3.78% benzene carboxylic acids. The yields are expressed on the basis of the original dry ash‐free organic matter. From the results of this and earlier investigations it appears that Danish illuvial organic matter consists primarily of isolated aromatic rings—heavily substituted with oxygen‐containing functional groups—that are linked to each other via aliphatic chains or saturated cyclic or hydroaromatic structures. The occurrence in this organic matter of substantial numbers of condensed aromatic ring systems is unlikely.