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INHS Bulletin vol. 11:10PDF


Title:A Collecting Bottle Especially Adapted for the Quantitative and Qualitative Determination of Dissolved Gases, Particularly Very Small Quantities of Oxygen
Author(s):Powers, Edwin Booth,
Subject(s):dissolving oxygen
collecting bottle
Quantitative Data Analysis
Qualitative Data Analysis
Abstract:One of the sources of error in the Winkler method for the determination of dissolved oxygen in water, especially where the oxygen content is low, is the diffusion of oxygen into the water before and during the introduction of the chemicals. Another source of error is the mixing of the manganous chloride with the potassium iodide-alkali solution at the surface of the water, the chemicals adhering to the pipettes introducing these reagents having washed off at the top of the bottle, where they react with the oxygen present. In recent work involving the oxygen-free water apparatus described by Shelford in the preceding article of this volume, it was found especially desirable to eliminate the above sources of error.
Issue Date:1918-05
Publisher:Champaign : Illinois Natural History Survey
Series/Report:Illinois Natural History Survey Bulletin; v. 011, no. 10
Publication Status:published or submitted for publication
Peer Reviewed:is peer reviewed
Rights Information:Copyright 2009 University of Illinois Board of Trustees. All rights reserved.
Date Available in IDEALS:2014-02-01

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