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目的了解冷水江市桶装饮用水的微生物指标合格率,分析其饮用安全性。方法按国家标准方法对该市自2012-2013年抽样检查的市售128份桶装饮用水进行菌落总数、大肠菌群、霉菌、酵母菌以及致病菌(沙门氏菌、志贺氏菌、金黄色葡萄球菌)等项目检测;并对到保质期的样品进行再测试。结果 128份桶装饮用水微生物指标合格率为77.34%,超标以菌落总数和霉菌、酵母菌为主,到保质期再检测时合格率降至57.03%,两者有显著性差异(χ2=11.98,P<0.05)。结论该市桶装饮用水合格率较低,临近保质期合格率更低,卫生质量不容乐观,应引起有关部门和厂家的高度重视,加强监督和管理。
Objective To understand the qualified rate of microbial indicators of bottled drinking water in Lengshuijiang City and analyze its drinking safety. Methods The total number of colonies, coliforms, molds, yeasts and pathogens (Salmonella, Shigella, golden yellow Staphylococcus) and other projects testing; and to the shelf-life of the sample re-test. Results The qualified rate of 128 microbes in bottled drinking water was 77.34%. The total number of microbes in barreled drinking water exceeded the standard, with the total number of colonies and molds and yeasts. The pass rate dropped to 57.03% after retesting at the shelf life, with significant difference (χ2 = 11.98, P <0.05). Conclusion The qualified rate of barreled drinking water in this city is lower, the passing rate near the expiration date is lower and the hygiene quality is not optimistic. It should arouse the attention of relevant departments and manufacturers and strengthen supervision and management.