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      Removal of dissolved oxygen from water: A comparison of four common techniques.

      1 , ,
      Talanta

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          Abstract

          Four common techniques for the removal of dissolved oxygen from water have been examined: boiling at 1 atm, boiling under reduced pressure, purging with N(2) and sonication under reduced pressure. After treatment, the residual oxygen in solution was analysed by the Winkler method. Nitrogen purging for 20-40 min at flow rate of 25 mL/s was found to be the most effective oxygen removal method. Boiling at 1 atm was found to be the least effective. None of the techniques evaluated here lead to complete removal of oxygen. The concentration of residual dissolved oxygen after purging for 20-40 minutes with nitrogen is 0.2-0.4 ppm.

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          Author and article information

          Journal
          Talanta
          Talanta
          0039-9140
          0039-9140
          Feb 1994
          : 41
          : 2
          Affiliations
          [1 ] Department of Geology, University of Wales, College of Cardiff, Cardiff, CF1 3YE, U.K.
          Article
          0039-9140(94)80110-X
          10.1016/0039-9140(94)80110-X
          18965910
          2794412f-c510-4f7a-af2d-874dca4e3e53
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