摘要
目的掌握石家庄市水体环境病原菌分布规律,评价可能存在的安全风险。方法采集市内自备井水、二次水、出厂水、直饮水、医疗机构污水、游泳池水、景观水、集中空调系统冷凝水等8类水样共计346份,进行病原菌分离鉴定,并应用统计学方法对其分布差异进行分析。结果 346份水样中共检出53种细菌。阴沟肠杆菌检出率最高,为23.98%。阴沟肠杆菌、铜绿假单胞菌、嗜水气单胞菌、弗氏柠檬酸杆菌在饮用水和非饮用水中的检出率差异有统计学意义(P<0.05)。阴沟肠杆菌、铜绿假单胞菌、肺炎克雷伯菌、大肠埃希菌在消毒和非消毒水样中分布差异无统计学意义(P>0.05)。结论水体环境中占优势的为条件致病菌,被常见致病菌污染的风险较低。病原菌在饮用水和非饮用水、消毒水和非消毒水中的分布差异提示应加强饮用水的卫生管理,合理使用水体消毒剂。
Objective To master the pathogens distribution and potential security risks in water environment of Shijiazhuang.Methods To collect 8 kinds of 346 water samples,including self provided wells water,two pressurized water,finished water,drinking water,sewage in medical institution,swimming pool water,landscape water,condensation water of air conditioning system. Pathogens were isolated and identified from the water,and statistics method was used to analyze the distribution. Results 53 kinds of bacteria were detected in the 346 samples. The detectation rate of Enterobacter cloacae was the highest,（ 23. 98%）. The defferences on the detection rates between potable water and non- potable water of Enterobacter cloacae,Pseudomonas,Aeromonas hydrophila,Citrobacter freundii were statistically significant（ P〈0. 05）. The distribution differences between disinfected water and non- disinfected water of Enterobacter cloacae,Pseudomonas aeruginosa,Klebsiella pneumoniae,Escherichia coli were not statistically significant（ P〉0. 05）. Conclusion In the water environment,the opportunistic pathogens were dominant and there is low risk of contamination by the common pathogen. The distribution differences of pathogens between potable and non- potable water,disinfected and non- disinfected water suggested strengthening the control of drinking water and using rationally water disinfectant.
出处
《中国卫生检验杂志》
CAS
2015年第14期2424-2426,共3页
Chinese Journal of Health Laboratory Technology
关键词
水体
病原菌
分布
Water
Pathogenic bacteria
Distribution
