| 摘要 |
A method and apparatus for measuring the amount of residual chlorine in solution with enhanced accuracy. The basic measurement technique involves introducing a solution of iodide ion into the sample to reduce the chlorine, thereby producing a proportionate amount of iodine; measurement of the iodine concentration is used to infer the initial amount of chlorine. The accuracy of this measurement technique is enhanced by introducing a sufficient amount of scavenger, preferably finely divided zinc metal, into the iodide solution to react with trace amounts iodine present therein.
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