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HONO Emissions from Soil Bacteria as a Major Source of Atmospheric Reactive Nitrogen

by Behrendt, T. , Trebs, I. , Ermel, M. , Pöschl, U. , Andreae, M.O. , Wu, D. , Oswald, R. , Loubet, B. , Mougin, E. , Sörgel, M. , Cheng, Y. , Meixner, F.X. , Moravek, A. , Hoffmann, T. , Delon, C. , Pommerening-Röser, A. , Breuninger, C. , Su, H.

in Acid soils / Agricultural land / Ammonia / Ammonia - metabolism / Arid soils / Arid zones / Atmosphere / Atmosphere - chemistry / Atmospheric and Oceanic Physics / Atmospheric chemistry / Bacteria / Communities / Emissions / Emittance / Farmlands / gases / Hydroxyl radicals / Laboratory Experiments / Microbial activity / microbial communities / Microorganisms / Nitric oxide / Nitrogen / Nitrogen - metabolism / Nitrogen cycle / Nitrogen dioxide / Nitrogen Fixation / Nitrosomonas europaea - metabolism / nitrous acid / Nitrous Acid - metabolism / Organic Chemistry / Oxidation-Reduction / Physics / Pollutant emissions / Reactive Nitrogen Species - metabolism / Soil (material) / Soil air / Soil bacteria / Soil chemistry / Soil Microbiology / Soil pollution / Soil samples / Soil types / Soil water / Soils

2013

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HONO Emissions from Soil Bacteria as a Major Source of Atmospheric Reactive Nitrogen

2013

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HONO Emissions from Soil Bacteria as a Major Source of Atmospheric Reactive Nitrogen

2013

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Journal Article

HONO Emissions from Soil Bacteria as a Major Source of Atmospheric Reactive Nitrogen

Behrendt, T.,

Trebs, I.,

Ermel, M.,

Pöschl, U.,

Andreae, M.O.,

Wu, D.,

Oswald, R.,

Loubet, B.,

Mougin, E.,

Sörgel, M.,

Cheng, Y.,

Meixner, F.X.,

Moravek, A.,

Hoffmann, T.,

Delon, C.,

Pommerening-Röser, A.,

Breuninger, C.,

Su, H.

2013

Overview

Abiotic release of nitrous acid (HONO) in equilibrium with soil nitrite (NO 2 - ) was suggested as an important contributor to the missing source of atmospheric HONO and hydroxyl radicals (OH). The role of total soil-derived HONO in the biogeochemical and atmospheric nitrogen cycles, however, has remained unknown. In laboratory experiments, we found that for nonacidic soils from arid and arable areas, reactive nitrogen emitted as HONO is comparable with emissions of nitric oxide (NO). We show that ammonia-oxidizing bacteria can directly release HONO in quantities larger than expected from the acid-base and Henry's law equilibria of the aqueous phase in soil. This component of the nitrogen cycle constitutes an additional loss term for fixed nitrogen in soils and a source for reactive nitrogen in the atmosphere.

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Publisher

American Association for the Advancement of Science,The American Association for the Advancement of Science,American Association for the Advancement of Science (AAAS)

Subject

Acid soils

/ Agricultural land

/ Ammonia

/ Ammonia - metabolism

/ Arid soils

/ Arid zones

/ Atmosphere

/ Atmosphere - chemistry

/ Atmospheric and Oceanic Physics

/ Atmospheric chemistry

/ Bacteria