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Boxes oxygen demand

Total oxygen demand (TOD) tells us how much 02 is required for complete combustion of pollutants in a waste stream. A volume of N2 containing a known quantity of 02 is mixed with the sample and complete combustion is carried out. The remaining 02 is measured by a potentiometric sensor (Box 17-1). Different species in the waste stream consume different amounts of O,. For example, urea consumes five times as much 02 as formic acid does. Species such as NH3 and H2S also contribute to TOD. [Pg.338]

Box 16-1 explains how dIchromate is used to measure chemical oxygen demand in environmental analysis. [Pg.351]

See other pages where Boxes oxygen demand is mentioned: [Pg.338]    [Pg.376]    [Pg.439]    [Pg.352]    [Pg.170]    [Pg.229]    [Pg.755]    [Pg.64]    [Pg.170]    [Pg.821]    [Pg.59]    [Pg.348]    [Pg.468]   
See also in sourсe #XX -- [ Pg.352 ]



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Box 16-1 Environmental Carbon Analysis and Oxygen Demand

Demand oxygenates

Oxygen demand

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