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Title: A comparison between two methods of dissolved oxygen measurement in rivers
Author: Dani Church
Author: Claire Bennett
Document Type: Monograph
A comparison of the Winkler chemical test and the meter field test in Norfolk and Suffolk has been made to see if there is a difference between the two techniques. Data from 11 sites, 1 Norfolk, 10 Suffolk was investigated for the period 1991 - 1998 (although the data from 1998 is incomplete.) The meters currently used for dissolved oxygen (DO) meter field tests, WTWs, were recently employed in August 1997. Previous to this, pHOX and JENWAY meters were used. The report aims to answer the following questions.1. Is there a significant difference between Winkler and field measurements; 2. Is there any obvious discrepancy for certain types of readings?; 3. Has there been any improvement since the introduction of WTWs?; 4. Have the different measurement techniques changed the RE compliarfce?; 5. How we will continue to regulate DO measurement techniques in the future?
Publisher: Environment Agency
Publication Date: 1998
Publication Place: Peterborough
Subject Keywords: Chemical measurementsDissolved oxygenWater analysisWater quality measurementsRivers
Geographic Keywords: NorfolkSuffolk
Extent: 5; + appendices
Total file downloads: 219

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