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DEMANDE IMMEDIATE OXYGENE [1 record]

Record 1 1999-03-19

English

Subject field(s)
  • Biochemistry
  • Environmental Studies and Analyses
  • Water Pollution
DEF

The initial quantity of oxygen that is used by polluted liquid immediately after having been introduced into water containing dissolved oxygen, exercised by end products of prior biochemical action or by chemical substances avid for oxygen.

OBS

In the standard laboratory procedure, the apparent BOD for 15 min at 20°C is taken as the value of the immediate biochemical oxygen demand.

French

Domaine(s)
  • Biochimie
  • Études et analyses environnementales
  • Pollution de l'eau
CONT

[...] si l'eau prélevée renferme des substances (minérales ou organiques) fortement réductrices, celles-ci absorberont très rapidement l'oxygène dissous, c'est la demande immédiate en oxygène.

OBS

La demande immédiate d'oxygène résulte de la présence de sels minéraux réducteurs ou de substances organiques avides d'oxygène : lactose, phénols, etc.

Spanish

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