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- W2384308245 abstract "Objective:To evaluate the status of Legionella contamination in public air-conditioning systems of a city,Jiangsu Province,and provide basic technology of public air-borne disease surveillance. Methods: A random sampling method were used to test the water samples from cooling towers in 50 sites of public air-conditioning systems of a city,Jiangsu Province,the correlation issue were detected such as: the total number of colonies and serotyping. Results: The overall detection rate of Legionella was 86.0%,4 types of serotyping were LP1,LP3,LP5 and LP6,of which LP1 is a dominant type,which accounting for 83.0%. With the water temperature rise,Legionella showed higher detection rate of the trend,while in water temperature 30-35 ℃ Legionella detection rate was 100%. Water samples of each species of algae were detected in 2-8,the total numbers of colonies for the detection range 10-4 700 CFU/ml,and the total number of colonies increased with the increasing detection of Legionella bacteria. The longer the service life of air-conditioning,the higher detection rate of Legionella. There was a significant difference (P0.05) in the detection rate. In non-disinfection of the air-conditioning,Legionella detection rate was significantly higher than the air-conditioning which has been disinfected (P0.05). Different residual chlorine concentrations for Legionella detection rate showed significant differences (P0.05),with higher concentrations of residual chlorine. The concentration of residual chlorine in the water 0.10 mg / L,Legionella detection rate was 0. Conclusion: Legionella is suitable for high temperature and is rich in types of algae and bacteria growth and reproduction of the environment. Of cooling towers and air-conditioning systems for regular cleansing and disinfection,disinfectant is added in water cooling towers in the water inhibit the growth of Legionella effective measures." @default.
- W2384308245 created "2016-06-24" @default.
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- W2384308245 date "2009-01-01" @default.
- W2384308245 modified "2023-09-25" @default.
- W2384308245 title "Investigation of contamination status by Legionella from the public air-conditioning systems in some cities of Jiangsu province" @default.
- W2384308245 hasPublicationYear "2009" @default.
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