摘要
目的了解常州市中小学饮用水微生物污染状况,为卫生监管提供参考依据。方法2017—2018年随机抽取常州市中小学直饮水水质处理器出口水和桶装饮水机冷水嘴出口水水样,按照GB/T 5750.12—2006《生活饮用水标准检验方法微生物指标》检测水样中菌落总数、总大肠菌群、耐热大肠菌群和大肠埃希菌。结果2017和2018年菌落总数、大肠菌群的合格率比较,差异均有统计学意义(χ^2=31.341、19.317,均P<0.01)。2017年城区学校桶装饮用水和农村学校桶装饮用水的合格率比较,差异有统计学意义(χ^2=7.575,P<0.01)。2017和2018年农村学校直饮水合格率比较,差异无统计学意义(χ^2=1.886,P>0.05)。同年内小学和中学饮用水合格率比较,差异无统计学意义(P>0.05)。2017年大肠菌群检出率农村学校桶装饮用水>城区学校桶装饮用水>农村学校直饮水,差异有统计学意义(P<0.05)。结论2017年常州市学校饮用水检测合格率较低,尤其是农村学校桶装饮用水和农村学校直饮水卫生状况较差。2018年常州市学校饮用水的合格率总体有较大提升,但农村学校直饮水的合格率提升不明显,应重点加强卫生监管。
Objective To understand the microbial pollution of drinking water in primary and secondary schools in Changzhou City,provide reference for health supervision.Methods In 2017-2018,the samples of direct drinking water quality processor’s outlet water and bottled water dispenser’s cold outlet water were randomly selected in primary and secondary schools in Changzhou City.According to GB/T 5750.12-2006 Standard test method for drinking water microbiological indicators,the total number of colonies,total coliforms,heat-resistant coliforms and Escherichia coli in the water samples were detected.Results There were statistically significant differences in qualified rates of total number of colonies and total coliforms between 2017 and 2018(χ~2=31.341,19.317,both P<0.01).In 2017,the difference in the qualified rate of barreled drinking water was statistically significant between urban and rural schools(χ~2=7.575,P<0.01).There was no statistically significant difference in the qualified rate of direct drinking water in rural schools between 2017 and 2018(χ~2=1.886,P>0.05).There was no statistically significant difference in the qualified rate of drinking water between primary school and middle school in the same year(P>0.05).In 2017,the detection rates of coliform group were as follows:rural school barreled drinking water>urban school barreled drinking water>rural school direct drinking water,and the difference was statistically significant(P<0.05).Conclusion In 2017,the qualified rate of school drinking water testing in Changzhou City is low,especially the sanitation of barreled drinking water and direct drinking water in r ural schools is poor.In 2018,the qualified rate of school drinking water in Changzhou City is greatly improved,but the improvement of qualified rate of direct drinking water in rural schools is not significantly,so health supervision should be focused on.
作者
钱红
黎俊宏
王珮
QIAN Hong;LI Jun-hong;WANG Pei(Testing Center,Changzhou Center for Disease Control and Prevention,Changzhou Jiangsu,213022,China)
出处
《职业与健康》
CAS
2020年第20期2839-2841,2846,共4页
Occupation and Health
基金
江苏省卫生厅预防医学科研项目(Y2015015)
关键词
饮用水
桶装饮用水
微生物指标
学校
Drinking water
Barreled drinking water
Microbiological indicators
School
