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An improved method for the determination of dissolved oxygen in water

Published online by Cambridge University Press:  27 March 2009

V. Subrahmanyan
V. Subrahmanyan
Affiliation:
(Rothamsted Experimental Station, Harpenden, Herts.)
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Extract

The determination of dissolved oxygen by Thresh's method may lead to discordant results because of the loss of iodine, which is carried away by the gas passed through the apparatus during the titration.

A modified method is described, which eliminates the above error and obviates the necessity for making separate determinations of the dissolved oxygen of the reagents used.

Correction for the nitrites present in the water can be made by making separate determination by the Griess-Ilosway colorimetric method.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 17 , Issue 4 , October 1927 , pp. 468 - 476
Copyright
Copyright © Cambridge University Press 1927

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References

page 468 note 1 J.C.S. 1890, 57, p.185.Google Scholar

page 468 note 2 Journ. Agr. Sci. 1927, 17, p. 429et seq.CrossRefGoogle Scholar

page 470 note 1 Loc. cit. p. 190.

page 471 note 1 Burning of the gas through a burner is safer and much more convenient than burning in a jet at the end of a glass tube nozzle.

page 475 note 1 Quoted from Adams, J.C.S. 1892, 61, p. 322.Google Scholar