RESIDUAL CHLORINE MEASUREMENT METHOD AND RESIDUAL CHLORINE MEASUREMENT DEVICE

• Main Author: FUKUOKA MASAYOSHI
• Format: Patent
• Language: English; Japanese
• Published: 19.01.2017
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

PROBLEM TO BE SOLVED: To precisely measure a residual chlorine concentration.SOLUTION: There is provided a residual chlorine measurement device 1 comprising an injection valve 2 and a flow cell 3. A liquid feed pump 9 pumps a carrier liquid to the injection valve 2. Sample water is injected into the carrier liquid circulating through the injection valve 2, and the carrier liquid including the sample water is supplied to the flow cell 3. The flow cell 3 is provided with a working electrode, a reference electrode and a counter electrode, a potentiostat keeps the potential of the working electrode constant relative to the reference electrode, and a current (or electric charge) flowing between the working electrode and counter electrode is measured. A residual chlorine concentration in the sample water is measured on the basis of the measured electric charge.SELECTED DRAWING: Figure 1 【課題】残留塩素濃度を精度良く測定する。【解決手段】インジェクションバルブ２と、フローセル３と、を備える残留塩素測定装置１である。送液ポンプ９によりインジェクションバルブ２にキャリア液を送液する。インジェクションバルブ２を流通するキャリア液に試料水を注入し、試料水を含んだキャリア液をフローセル３に供給する。フローセル３に、作用電極、参照電極、対極を設け、ポテンショスタットにより、参照電極に対する作用電極の電位を一定に保ち、作用電極と対極との間に流れる電流（または電荷）を測定する。測定された電荷に基づいて試料水中の残留塩素濃度を測定する。【選択図】図１