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Nitrosation of Soil Organic Matter: III. Nature of Gases Produced by Reaction of Nitrite with Lignins, Humic Substances, and Phenolic Constituents Under Neutral and Slightly Acidic Conditions
Author(s) -
Stevenson F. J.,
Harrison R. M.,
Wetselaar R.,
Leeper R. A.
Publication year - 1970
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/sssaj1970.03615995003400030024x
Subject(s) - chemistry , nitrite , nitrogen , lignin , oxygen , nitrosation , yield (engineering) , soil water , environmental chemistry , organic matter , aqueous solution , inorganic chemistry , nitrous oxide , humic acid , organic chemistry , nitrate , fertilizer , materials science , environmental science , soil science , metallurgy
Molecular nitrogen, nitrous oxide (N 2 O), nitric oxide (NO), and CO 2 were identified in the gases formed by reacting NO 2 ‐ with soils, humic and fulvic acids, lignins, lignin‐building units, and polyphenols in aqueous buffer solutions of pH 6 and 7 in the absence of oxygen. The composition of the mixture of gases was dependent upon the nature of the material examined, with relatively larger amounts of N 2 being produced from the humic and fulvic acids. Compounds containing methoxyl groups failed to yield detectable amounts of methyl nitrite (CH 3 ONO) at the pH levels found in most soils. The reaction of NO with humic substances in the absence of oxygen led to the production of N 2 O and CO 2 .