循環式浴槽におけるトリハロメタンに関する研究
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概要
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The circulation type bathtub is widely used because of economical efficiency. Chlorination is obligated to circulation type bathtub to prevent infection disease such as legionaires' disease. Though, chlorination can prevent infection disease, cause carcinogenic disinfection by product(DBPs). The major DBPs are chloroform, bromodichloromethane, dibromochloromethane and bromoform, so called trihalomethanes(THM)which are volatile compound. We conduct our research to reveal concentration level of THMs in circulation type bathtub and behavior of THMs in bath room. As a result of our research, the maximum and the average concentration of THMs in the circulation type bathtub were 312 and 128ppb respectively. About 60% of THM in bathtub was moved to vapor phase by 0.3ml/min aeration within 15min.
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