论文部分内容阅读
目的掌握上海市某区小学直饮水的水质卫生状况,为加强管理提供依据。方法 2013—2015年间,采用分层抽样的方法抽取上海市某区使用直饮水小学作为研究对象,对每所小学的直饮水设备出水水样及水龙头内壁进行采样检测。结果 3年共抽检直饮水样88件,总合格率为75.0%,2013—2015年的直饮水合格率分别为81.6%、68.0%、72.0%,3年间水质合格率差异无统计学意义(χ~2=1.651,P>0.05);3年共抽检直饮水设备水龙头内壁环节样品88件,总合格率为59.1%,2013—2015年的环节样品合格率分别为63.2%、40.0%、72.0%,3年间水龙头内壁环节样品合格率差异无统计学意义(χ~2=5.753,P>0.05);水龙头内壁菌落总数合格组的水质合格率(84.6%)高于水龙头内壁菌落总数不合格组的水质合格率(61.1%),二者差异有统计学意义(χ~2=6.268,P<0.05)。结论该区小学直饮水及直饮水设备水龙头内壁微生物污染不容忽视,建议应进一步细化校园直饮水卫生管理要求,加强饮水设备及水嘴消毒工作,防止校园直饮水发生污染。
Objective To understand the sanitary status of drinking water in primary schools in a district of Shanghai and provide the basis for strengthening management. Methods From 2013 to 2015, stratified sampling method was used to select a straightforward drinking water primary school in a certain district of Shanghai as the research object. Sampling and testing were carried out on the outlet water samples and the inner wall of the tap in each primary school. Results A total of 88 direct drinking water samples were obtained during the three years. The total qualified rate was 75.0%. The passing rates of direct drinking water during 2013-2015 were 81.6%, 68.0% and 72.0% respectively. There was no significant difference in the passing rate of water quality in 3 years (χ 88% of the drinking water equipment faucet internal wall samples were collected, the total pass rate was 59.1%; the passing rates of the samples from 2013 to 2015 were 63.2%, 40.0% and 72.0%, respectively (Χ ~ 2 = 5.753, P> 0.05). The qualified rate of water quality of the total number of colonies inside the faucet (84.6%) was higher than that of the faucet on the inner wall The qualified rate of water quality (61.1%), the difference was statistically significant (χ ~ 2 = 6.268, P <0.05). Conclusion The primary drinking water and direct drinking water equipment faucet wall microbial contamination can not be ignored, it is recommended to further refine the health management requirements of direct drinking water on campus, to strengthen the disinfection of drinking water equipment and tap, to prevent direct drinking water pollution.