【摘要】 目的了解深圳市城市生活饮用水出厂水水质卫生状况。方法选取深圳市35家水厂,于2007年9月和2008年5月采集市政供水水厂出厂水水样73份。水样的采集和检验按照GB/T5750.2-2006《生活饮用水标准检验方法—水样的采集与保存》进行,检测结果按照GB5749-2006《生活饮用水卫生标准》进行评价。结果出厂水水样合格率为84.93%(62/73)。在检测的75项指标中,部分水厂出厂水存在混浊度、铝、锰、三卤甲烷、二氧化氯、氯酸盐和余氯不合格情况。经Spearman相关分析,铝与浑浊度呈正相关,差异有统计学意义(r=0.329,P<0.01);菌落总数与游离余氯含量呈负相关,差异有统计学意义(r=-0.420,P<0.01)。结论深圳市集中式供水出厂水水质良好。更多还原

【Abstract】 Objective To analyze the water quality of centralized water supply system in Shenzhen.Methods A total of 73 water samples were collected from 35 distribution centers of centralized water supply system in Shenzhen,Guangdong province.The water samples of drinking water supply system were collected,preserved and analyzed with the standard procedures(GB/T5750.2-2006).The sanitary quality of water samples were evaluated and determined by the Standards for Drinking Water Quality(GB5749-2006),which was published in September,2007 and revised in May,2008.Results There were 76 indexes of water quality evaluated,which included biological,chemical and physical tests.The qualified rate of drinking water was 84.93%(62/73)in Shenzhen.The samples of unqualified water mainly had problems in 7 indexes,including turbidity and the contents of aluminum,manganese,trihalomethanes,chlorine dioxide,chlorate and free chlorine residue.The turbidity of water was related to the presence of aluminum(Spearman related analysis,r=0.329,P<0.01).The bacterial count of water was negative related to free chlorine residue(r=-0.420,P<0.01).Conclusion The water quality of centralized water supply system is acceptable in Shenzhen.更多还原