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biological oxygen demand
(english) The amount of dissolved oxygen consumed by microorganisms as they decompose organic material in polluted water. Measurement of the rate of oxygen take-up is used as a standard test to detect the polluting capacity of effluent; the greater the BOD value (g) (and hence the greater the presence of oxygen - consuming microorganisms) the greater the volume of pollutant present. (See also: metabolism, microorganisms, pollution)
demande biologique en oxygène
(french) Le montant d'oxygène dissous consommé par les micro-organismes comme ils décomposent des matières organiques dans l'eau polluée. Mesure du taux de prise d'oxygène est utilisé comme une épreuve standarde pour détecter la capacité polluante d'effluent; les valeurs supérieures de BOD (g) (et d'où la présence des micro-organismes qui consomment d'oxygène est considérable) indiquent la présence des grandes volumes du polluant. (See also: metabolism, microorganisms, pollution)
necessidade biológica em oxigénio
(portuguese) Quantidade de oxigénio dissolvido consumido por microorganismos que decompõem matéria orgânica em águas poluídas. (See also: metabolism, microorganisms, pollution)

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