TERMIUM Plus®

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DERIVE AZOTE [1 record]

Record 1 2012-05-29

English

Subject field(s)
  • Chemical Elements and Compounds
  • Climate Change
  • Pulp Preparation (papermaking)
CONT

Ozone molecules are constantly being made. But they can be destroyed by any of a number of chemical processes, most of them natural. For example, the stratosphere receives regular injections of nitrogen-bearing compounds, such as nitrous oxide (N2O). Produced by microbes and fossil-fuel combustion, the gas rides the rising air currents to the top of the troposphere. Forced higher still by the tremendous upward push of tropical storms, it finally enters and percolates slowly into the stratosphere.

CONT

Nitrogen compounds have been found to activate pulp between two oxygen stages resulting in a lower kappa number than would otherwise be possible.

French

Domaine(s)
  • Éléments et composés chimiques
  • Changements climatiques
  • Préparation de la pâte à papier
DEF

Produit chimique qui renferme de l'azote.

OBS

Dans certains contextes on peut établir une différence entre les termes «produit, espèce, dérivé et composé»; dans la plupart des cas, néanmoins, tous ces termes sont utilisés comme de parfaits synonymes.

OBS

Les composés de l'azote contribuent largement au réchauffement climatique. L'oxyde nitreux (N2O) est un des principaux gaz à effet de serre; les oxydes d'azote, NO et NO2 (NOx) sont des gaz à effet radiatif indirect; le gaz ammoniac (NH3) est un gaz à effet de serre mineur. Pourtant l'azote lui-même qui constitue 78 % de l'atmosphère est un gaz sans effet de serre.

Spanish

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