Method and apparatus for detecting negative ion in water
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United States of America Patent
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Feb 3, 2004
Grant Date -
N/A
app pub date -
Sep 21, 2001
filing date -
Mar 24, 1999
priority date (Note) -
Expired
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Abstract
The present invention provide a method and an apparatus for detecting anions in water which does not require replacement of ion exchange resins and the like and can perform precise measurement at low cost in a simple operation. The apparatus for detecting anions in water according to the present invention is an apparatus for detecting anions in water with the use of an electric conductivity cell and is constituted by an electrolyzer having an anode chamber having an anode plate and a cation chamber having a cathode plate via a cation exchange membrane, a direct-current power unit for applying a direct-current voltage between the anode and the cathode of the electrolyzer and an electric conductivity cell for measuring the electric conductivity of a sample water, and a flow passage for introducing a sample water into the anode chamber and a treated water flow passage for discharging the treated water which has been subjected to electrolytic treatment in the anode chamber which are connected to the anode chamber, respectively, and the treated water flow passage being connected to the cathode chamber via an electric conductivity cell.
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