Method and apparatus for determining total oxygen demand of comb

Details Method and apparatus for determining total oxygen demand of comb Method and apparatus for determining total oxygen demand of comb

1976-03-22

1978-02-21

Reese, Robert M.

Chemistry: physical processes

Physical processes

Crystallization

23253PC, G01N 3112

Patent

active

040749738

ABSTRACT:
Means are provided for determining the TOD (total oxygen demand) of combustible materials contained in water, principally, sea water.
Test water containing halides of alkali metals or alkaline earth metals, such as sea water, is burned in an oxygen-containing inert gas flowing through a combustion tube which contains a catalyst and which is heated to a combustion supporting temperature. The amount of oxygen consumed is measured.
Inside the said combustion tube, down the gas stream from the catalyst, is provided a decomposing agent which consists of a hydroxide or carbonate of an alkali metal, or a hydroxide, oxide or carbonate of an alkaline earth metal, or of any mixture of them, thereby to decompose into sodium chloride and oxygen the sodium hypochlorite which was formed from the combustion of the test water.

REFERENCES:
patent: 3428432 (1969-02-01), Staunton et al.
patent: 3560156 (1971-02-01), Teal et al.
patent: 3565583 (1971-02-01), McNulty et al.
patent: 3933429 (1971-01-01), Shibata et al.

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