Process for the quantitative determination of the oxygen...

Details Process for the quantitative determination of the oxygen... Process for the quantitative determination of the oxygen...

G - Physics

01

N

150/19

G01N 31/12 (2006.01) G01N 33/18 (2006.01)

Patent

CA 1120838

HOE 78/F 151 PROCESS FOR THE QUANTITATIVE DETERMINATION OF THE OXYGEN DEMAND OF WATER CONTAINING OXIDIZABLE MATTER Abstract of the disclosure: For the quantitative determination of the total oxy- gen demand of water containing oxidizable matter, the water is continuously evaporated at about 900°C in the presence of varying amounts 11, ...., 1n of oxygen-containing gas added per unit of steam at continuously repeated intervals. The oxygen-containing gas should not exceed 1 to 5 % by vo- lume, calculated on the amount of steam produced during each interval. The residual oxygen concentrations S1, ...., Sn in the steam gas/mixture are measured for the different amounts of oxygen-containing gas added and the oxygen demand is calculated from the residual concentra- tions and the added amounts of oxygen-containing gas.

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