| 摘要 |
<p>A method and apparatus for continuously monitoring the concentration of a target chemical in a solution, such as chlorine dioxide in sewage or waste water, includes a holding tank, a bubbler chamber, and an air pump for directing air bubbles through the solution held in the bubbler chamber. Gases discharged from the solution by the air bubbles are collected in the bubbler chamber. These discharged gases include a quantity of the target chemical present in the solution as a dissolved gas. The concentration of the chemical in the discharged gases is then measured with a sensor such as a polarographic probe. This concentration along with the measured temperature of the solution is used as an analog to determine the concentration of the chemical in the solution. <IMAGE></p> |
