Tian Zhong-me
2014
Citations
0
Influential Citations
0
Citations
Quality indicators
Journal
Chinese Journal of Disinfection
Abstract
Objective To study disinfection effect of a guanidine disinfectant on Legionella pneumophila( type III),so as to provide the scientific basis for the practical disinfectant applications. Methods Suspension quantitative germicidal test was used to study disinfection effect of guanidine disinfectant. Results The solution of guanidine disinfectant is colorless and transparent,and the content of poly [2-( 2- ethoxy)- ethoxy ethyl ester] guanidine was 4 500 ~ 5 500 mg / L. The average killing logarithm values of Legionella pneumophila( type III) exposed to the guanidine disinfectant solution of 2000 mg / L for 20 min was 3. 85. The average killing logarithm values of Legionella pneumophila( type III) exposed to the guanidine disinfectant solution of 3 000 mg / L and 4 000 mg / L for 20 min and 15 min were all above 5. 00. In a closed 20 m3 aerosol chamber,Staphylococcus albus artificially contaninated in air was exposed to aerosol spraying of 8 ml / m3 of the disinfectant for 30 min,and the killing rate was 99. 90%. The control group of the natural rate of Staphylococcus albus in air was below 67. 38%. Conclusion The solution of guanidine disinfectant has good killing effect to Legionella pneumophila,and the disinfection related performance should be carried out to study.