EnvThes
type: ConceptScheme

biological oxygen demand
type: Concept
in scheme: EnvThes
alternative label: demand amound of biological oxygen
alternative label: BoD
alternative label: BOD
scope note: MS Academic Keywords
definition: [Henderson's] measurement of the amount of organic pollution in water, measured as the amount of oxygen taken up from a sample containing a known amount of dissolved oxygen kept at 20 °C for 5 days. A low BOD indicates little pollution, a high BOD indicates increased activity of heterotrophic microorganisms and thus heavy pollution.
broader: variable
creator: https://orcid.org/0000-0003-2195-3997

variable
type: Concept
narrower: biological oxygen demand