生活饮用水中微生物与放射性指标监测结果分析

Analysis of Microbiological and Radioactivity Parameters Monitoring Results of Drinking Water

目的:对佛山市A区丰水期、枯水期出厂水、末梢水水质情况进行监测,进一步保障居民生活饮用水安全。方法:采用《生活饮用水标准检验方法微生物指标》(GB/T 5750.12—2006)和《生活饮用水标准检验方法放射性指标》(GB/T 5750.13—2006)方法对水样中菌落总数、总大肠菌群、耐热大肠菌群、大肠埃希氏菌、贾第鞭毛虫、隐孢子虫、总α放射性和总β放射性项目进行检测与分析。结果:本研究中佛山市A区水样所检测项目均合格,合格率为100%。其中,2018年丰水期与枯水期菌落总数、总β放射性项目检测结果差异显著(0.010.05)。结论:佛山市A区出厂水、末梢水水样微生物和放射性指标总体检测结果合格,建议政府职能部门继续按照水质监测项目和频次要求,保障居民生活饮用水水质安全和稳定。

Objective:To monitor the quality of factory water and peripheral water in A district of Foshan City in wet season and dry season,so as to further ensure the safety of drinking water.Method:The total number of colonies,total coliforms,heat-resistant coliforms,Escherichia coli,Giardia,Cryptosporidium,totalαradioactivity and totalβradioactivity in water samples were detected and analyzed by GB/T 5750.12—2006 and GB/T 5750.13—2006.Result:In this study,all water samples from Area A of Foshan City were qualified,and the passing rate of the water samples was 100%.The difference between the abundant and the dry water period of total bacteria and total beta radioactivity items were significant in 2018(0.01<P<0.05),the dry water period total bacteria and the total beta radioactivity items results higher the abundant water period,and total beta radioactivity items were significant in 2019(0.01<P<0.05)of the dry and abundant water period,the outcome lower the dry water period,while the differences between the other test items were not significant(P>0.05).Conclusion:The overall test results of the supply and end water samples in Foshan City A are relatively satisfactory,and it is recommended that the Government and relevant departments continue to follow the water quality monitoring items and frequency to ensure the safety and stability of the quality of domestic drinking water.