Method for determination of dissolved oxygen in water
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 16, 1995
Grant Date -
N/A
app pub date -
Jul 15, 1992
filing date -
Jul 15, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for determining the concentration of dissolved oxygen in a water sample comprising the steps: (a) providing a water sample of predetermined volume, the oxygen content of which is to be determined; (b) mixing additives with the water sample to form a mixture, the additives comprising an oxidizable metal salt comprising a transition metal cation selected from the group consisting of scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel and copper, and an anion selected from the group consisting of an inorganic anion and an organic anion which, with the cation, results in a water soluble oxidizable metal salt, at least one water soluble alkali metal compound selected from the group consisting of an alkali metal oxide and an alkali metal hydroxide and at least one oxidation-reduction indicator capable of a color change upon oxidation of the metal salt; (c) preventing any substantial contact of the mixture with atmospheric oxygen; and (d) comparing the color of the mixture to a predetermined color indicative of the concentration of dissolved oxygen in the water sample.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully