| 摘要 |
In one aspect of the invention, chlorinated swimming pool water in which chloramine may be present is monitored and treated by: sensing the chlorine level of the water and, in dependence thereon, adding chlorine to the water; spectrophotometrically sensing a mixture of the water and a spectrophotometric reagent that is sensitive to chloramine and, in dependence thereon, modifying the addition of chlorine. In another aspect of the invention, swimming pool water is monitored and treated by: spectrophotometrically sensing a mixture of the water and a spectrophotometric reagent that is sensitive to copper or silver ions and, in dependence thereon, adding copper or silver ions to the water. Due to the use of spectrophotometry, the level of chloramine or copper or silver ions in the water can be accurately and reliably determined.
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