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NN’-ビス(24-ジスルホベンジル)トリジン（SBT）試薬による遊泳用プール水中の二酸化塩素，亜塩素酸イオン及び残留塩素の定量
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有賀 孝成1、押田 裕子1、川本 厚子1、青山 照江1、永山 敏廣2
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1東京都健康安全研究センター多摩支所、2 東京都健康安全研究センター
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Photometric determination of chlorine dioxide chlorite ion and residual chlorine in swimming pool waters with the reagent NN’-bis(24-di-sulfobenzyl)tolidine (SBT)
Takanari ARIGA Hiroko OSHIDA Atsuko KAWAMOTO Terue AOYAMA Toshihiro NAGAYAMA
A method for the determination of chlorine dioxide chlorite ion and residual chlorine in swimming pool waters with the reagent NN’-bis(24-di-sulfobenzyl)tolidine (SBT) was examined. It was assumed that the phosphate buffer solution of pH6.3 was used to receive the obstruction of free residual chlorine when chlorine dioxide was measured using the acetate buffer solution of pH 5.0〜5.6. However the absorbance decreases rapidly when phosphoric acid solution is used. Therefore after the reagent had added the absorbance spectra was measured at once. If the sulfuric acid solution is added after the potassium iodine solution is added the free residual chlorine doesn't influence the determination of chlorine dioxide. Measurements by SBT photometric method that had been developed this time since the swimming pool waters was measured were corresponding to measurements by NN-diethyl-p-phenylenediamine (DPD) photometric method well.
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二酸化塩素 , 亜塩素酸イオン , 残留塩素 , NN’-ビス(24-ジスルホベンジル)トリジン（SBT） , NN-ジエチル-p-フェニレンジアミン（DPD）吸光光度 , 法 , 遊泳用プール水 , |
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[PDF (328.2K)]
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第4巻 , 第1号 , (pp.78-87)
