目的了解定陶县桶装饮用水指标合格率,分析其饮用水安全性,针对原因,采取改进措施,提高桶装水的卫生质量。方法按国家标准方法对桶装饮用水进行微生物指标和理化指标测定;并将非正规厂家和正规厂家的桶装水质量相比较。结果 96份桶装饮用水合格率为70%,29份不合格水样中,28份菌落总数超标,11份电导率超标,5份氯化物不合格,4份锌不合格,其他指标全部合格;非正规厂家的不合格率(65%)明显高于正规厂家(21%),二者有非常显著差异性(P0.01),正规厂家饮用水质量明显优于前者。结论桶装饮用水菌落总数合格率较低,非正规厂家生产的合格率更低.本县桶装饮用水在生产等环节上存在处理不当或再污染问题,卫生质量不乐观,应引起有关部门和厂家的高度重视,加强监督与管理,同时提醒老百姓对桶装饮用水的重视。

Objective To investigate the Dingtao County bottled drinking water passing rate indicators, analysis of the safety of drinking water, according to the reasons, some improvement measures, and improve the hygienic quality of bottled water. Methods According to the national standard of bottled drinking water for the microbial indexes and physiochemical indexes determination;the quality of bottled water and non formal manufacturers and formal manufacturers compared. Results The of 96 bottled drinking water compliance rate was 70%, 29 unqualified water samples, 28 bacteria exceed the standard, 11 conductivity exceed the stan-dard, 5 copies 4 copies of zinc chloride unqualified, unqualified, other indicators are all qualified;non formal manufacturers of un-qualified rate (65%) was significantly higher than that of the regular factory (21%), the two have very significant difference (P<0.01), formal manufacturers of drinking water quality is better than the former. Conclusion The bottled dr

研究饮水机铜内胆对饮用水中细菌的抑菌生物效应，并采用细菌平板计数法比较铜内胆和不锈钢内胆盛放饮用水中细菌含量随放置时间的变化关系。铜内胆的主要抗菌机理是铜表面能够缓慢释放二价铜离子进入细胞膜并破坏细菌的生物氧化过程。结果表明，铜内胆对饮用水的抑菌能力明显强于不锈钢内胆的抑菌能力，该结果为饮水机的改进、突破饮水机二次污染的瓶颈提供了参考，对保障饮用桶装水的安全具有十分重要的意义。

The antibacterial ability of copper inner container and stainless steel inner container in drinking water fountains by plate count method are studied. A comparison is made to study the changes of bacterial amounts in copper inner container and stainless steel inner container with increasing the storage time. The antibacterial mechanism of copper inner container is that copper ions are able to be slowly released from the surface of copper inner container and cross cell membrane to destroy the biological oxidation process of bacteria. Therefore, the antibacterial ability of copper inner container is much better than that of stainless steel inner container. This experimental result provides a useful strategy to improve the performance of drinking water fountains, and also plays important roles in ensuring the security of drinking water.