A significant abiotic pathway for the formation of unknown nitrogen in nature

Details A significant abiotic pathway for the formation of unknown nitrogen in nature A significant abiotic pathway for the formation of unknown nitrogen in nature

Mar 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3105502j&link_type=abstract

Geophysical Research Letters, Volume 31, Issue 5, CiteID L05502

Physics

Geochemistry, Geochemistry: Geochemical Cycles (0330), Geochemistry: Organic Geochemistry, Geochemistry: Instruments And Techniques

Scientific paper

The global nitrogen cycle is of prime importance in natural ecosystems. However, the origin and nature of up to one-half of total soil N remains obscure despite all attempts at elucidation. Our data provide, for the first time, unequivocal evidence that the promoting action of Mn (IV) oxide on the Maillard reaction (sugar-amino acid condensation) under ambient conditions results in the abiotic formation of heterocyclic N compounds, which are often referred to as unknown nitrogen, and of amides which are apparently the dominant N moieties in nature. The information presented is of fundamental significance in understanding the role of mineral colloids in abiotic transformations of organic N moieties, the incorporation of N in the organic matrix of fossil fuels, and the global N cycle.

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