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目的:探究在实验室中对生活饮用水微生物进行检验的质量控制方法和效果。方法:自2016年7月至2017年8月对本地区56个监测点的水质进行检测,在实施微生物检验质量控制策略前半年采集56份水样,然后于实施质量控制策略后半年进行水样检测,同样采集56份水样,对水质微生物进行实验室检测,对比不同阶段水样微生物实验室检验质量。结果:2016年7月至2017年1月间共检测56份水样,其中41份水样合格,合格率为73.21%,2017年2月至2017年8月间检测的56份水样中,48份水样合格,合格率为85.71%,两次检验可见显著差异(P<0.05)。两个不同阶段耐热大肠杆菌、总大肠杆菌和细菌总数检出率可见较大差异(P<0.05)。结论:加强微生物检验的实验室质量控制能够使饮用水微生物检测率获得显著提高,从而保障广大居民的饮用水安全。
Objective: To explore quality control methods and effects of testing drinking water microorganisms in the laboratory. Methods: From July 2016 to August 2017, 56 water samples were collected from 56 monitoring sites in the area. Fifty-six water samples were collected in the first six months of the implementation of the quality control strategy for micro-organisms. Water samples were then tested six months after the implementation of the quality control strategy , Also collected 56 water samples, laboratory tests of water quality microorganisms, compared to different stages of water quality microbiological laboratory test quality. Results: A total of 56 water samples were tested between July 2016 and January 2017, of which 41 samples were qualified with a pass rate of 73.21%. Among the 56 water samples tested from February 2017 to August 2017, 48 water samples pass the pass rate of 85.71%, two tests showed significant differences (P <0.05). Two different stages of heat-resistant Escherichia coli, total E. coli and the total number of bacteria showed a significant difference (P <0.05). CONCLUSIONS: Enhancing laboratory quality control of microbial testing can significantly improve the detection rate of microorganisms in drinking water, thus ensuring the drinking water safety of residents.