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Effect of Isocyanurate on Free Available Chlorine. I. Comparison of Bactericidal Effectiveness with Combined Chlorine

RYOJI SAWAMURA

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Abstract

Comparative studies were made on the bactericidal effect of hypochlorite, hypochlorite and isocyanurate, and chloramines. Survival of Escherichia coli exposed to hypochlorite for about 15 sec was not affected by the addition of 30 ppm of isocyanurate. In contrast, chloramines required 4-6 times of available chlorine concentration to obtain the same effect as that of hypochlorite, or 3-5 times longer exposure with the same concentration of chlorine.

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Comparative studies were made on the bactericidal effect of hypochlorite, hypochlorite and isocyanurate, and chloramines. Survival of Escherichia coli exposed to hypochlorite for about 15 sec was not affected by the addition of 30 ppm of isocyanurate. In contrast, chloramines required 4-6 times of available chlorine concentration to obtain the same effect as that of hypochlorite, or 3-5 times longer exposure with the same concentration of chlorine.

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Available abstract

Comparative studies were made on the bactericidal effect of hypochlorite, hypochlorite and isocyanurate, and chloramines. Survival of Escherichia coli exposed to hypochlorite for about 15 sec was not affected by the addition of 30 ppm of isocyanurate. In contrast, chloramines required 4-6 times of available chlorine concentration to obtain the same effect as that of hypochlorite, or 3-5 times longer exposure with the same concentration of chlorine.

Key concepts: Chloramine, Hypochlorite, Chlorine, Chemistry, Hypochlorous acid, Sodium hypochlorite, Nuclear chemistry, Inorganic chemistry

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Effect of Isocyanurate on Free Available Chlorine. I. Comparison of Bactericidal Effectiveness with Combined Chlorine — Research Paper | ScholarLens