The determination of low concentrations of oxygen in gases by the manganous hydroxide method

✍ Scribed by H.A.C. van Straten

• Publisher: Elsevier Science
• Year: 1954
• Tongue: English
• Weight: 848 KB
• Volume: 10
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/s0003-2670(00)89652-x

✦ Synopsis

ANr\L\TTICA CHIMICA nC1'A 243 THE DETERMINATION OF LOW CONCENTRATIONS OF OXYGEN IN G.4SES BY THE MANGANOUS HYDROSIDJZ METHOD ISTRODUCTION As long ago as 188s \VINKLER~ suggested the manganous hydroxide method for the determination of low concentrations of oxygen in water. In later years, the application of this principle to the dctcrminatioh of osygcn in gases has been discussed by a great many authorsn-11, of which WC mention as the most recent ones: WINSLOW AND LIEBIIAPSI~~~, M~vm AND GIIIJSEND, TAYLOR AND ALDX-ANDEI+, References p. 255.

STRATES VOL. 10 (1954)

rapidly absorb oxygen from the air on. bcing"storcd. For thcsc reasons it is recommended to apply the method for dcacration of reagents suggcstcd by MEYER AND GHEJSDN.

According to this method the liquids in the reaction vessel, immediately before USC, are rcndercd perfectly oxygen-free in vacua and at a high temperature. The blank value is so low that it can bc ncglectcd, also when the gases to be measured have oxygen concentrations lower than 0.1% vol. The reason why in the ASTM method as well as in the modification suggested by TAYLOR *0.02 AI 2.91 rto.03 5 3.75 LkO.03 --_._ _ .