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《Journal of Sichuan Continuing Education College of Medical Sciences》 1995-01
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HYGIENIC SURVEY AND EVALUATION OF WATER QUALITY IN CISTERNS ON THE TOP OF RESIDENT HIGH BUILDING

Li Xiaochun Department of hygiene  
Hygienic survey of 36 cisterns water quality on the top of high resident building was conducted in the municipality, of which the water quality of 8 cisterns was randomly chosen for detection, taking the graund floor tap water (of the same building )as control for comparasion. The results showed that all the detecied items were in accordance with that of the control except ammonia nitrogen,. but the water temperature. PH. nitrite mtrogen nitrate nitrogen,COD TS.iron and Zinc in the cistern water were a little bit higher than that of the corresponding control while cistern water residual chlorine was lower. Possible reasons for the low residual chlorine are discussed.
【CateGory Index】: R123.1
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