TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

DISSOLVED ORGANIC MATTER [2 records]

Record 1 2004-02-16

English

Subject field(s)
  • Chemistry
  • Environmental Studies and Analyses
CONT

Dissolved solids. The total amount of dissolved material, organic and inorganic, contained in water and wastes. Excessive dissolved solids can make water unsuitable for industrial uses, unpalatable for drinking, and even cathartic.

CONT

Interest in marine dissolved organic matter (DOM) is very high because it plays an important role in oceanic and global carbon cycling, which in turn impacts weather. Understanding the processes involved in the transformations of carbon, phosphorus, nitrogen, and other major elements in the oceans has been a primary goal of marine biogeochemists and oceanographers over the past decade.

French

Domaine(s)
  • Chimie
  • Études et analyses environnementales
CONT

La matière organique dissoute joue un rôle considérable dans les phénomènes biologiques : nourriture, télémédiation chimique. En raison de sa réactivité elle intervient aussi dans les phénomènes de complexion et de chélation des métaux et d'absorption.

OBS

matière organique : Substance chimique ayant essentiellement une structure à base de carbone et comportant des composés hydrocarbonés et leurs dérivés.

Spanish

Save record 1

Record 2 2001-11-16

English

Subject field(s)
  • Water Pollution
  • Hydrology and Hydrography
CONT

Dissolved organic matter (DOM) serves an important function in providing organic substrates for heterotrophic metabolism in fresh water environments. Its composition is highly variable, but in an ecosystem context it is most generally separated into labile and refractory fractions. The former is rapidly taken up by heterotrophic bacteria while the latter is very slowly acted upon. In both cases the DOM is partly assimilated to generate bacterial biomass and partly remineralized and excreted.

French

Domaine(s)
  • Pollution de l'eau
  • Hydrologie et hydrographie
DEF

Ensemble des composés organiques en solution dans l'eau de mer.

CONT

La plus grande partie du carbone inorganique total, C1, retrouvé dans les eaux provient du CO2 de l'atmosphère, du CO2 contenu dans les sols et de la mise en solution de minéraux carbonatés tels que la calcite. Il faut également ajouter à ces sources, l'oxydation dans le milieu aquatique, de la matière organique dissoute ou particulaire (d'origine autochtone ou allochtone).

Spanish

Campo(s) temático(s)
  • Contaminación del agua
  • Hidrología e hidrografía
Save record 2

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