【摘要】 目的通过分析5.12地震前后都江堰市农村分散供水饮水状况,了解地震对水质的影响,为建立地震等应急状况下饮用水安全评估提供一定依据。方法采取随机抽样的方法,对5.12地震都江堰市农村分散式供水饮用水进行现场调查、检测部分应急指标,检测结果与地震前进行比较。结果不纳入消毒剂余量指标评价地震前后农村分散式供水的总体水质合格率没有变化(χ2=3.62,P>0.05),单项指标浑浊度地震前合格率均高于地震后(χ2值=16.61,P<0.05)。结论 5.12地震对农村分散式供水的影响主要是浑浊度、臭和味、肉眼可见物等指标,地震等应急状况下首先应通过水质的色、浊、臭和味进行现场初筛,然后根据实际情况有针对性地进行现场水质卫生检测或实验室检测。更多还原

【Abstract】 Objective To explore the influence on drinking-water in rural area of Dujiangyan city and provide reference for establishing safe assessment of the drinking water at emergency by analyzing relevant data before and after 5.12 Earthquake.Methods Randomized samples of decentralized drinking water were collected from rural areas of Dujiangyan city,and were determined concerning certain emergency indexes with a comparison of before and after the Quake.Results The qualified rate of the drinking water monitored after earthquake was statistically equivalent of that of before earthquake(χ2=3.62,P>0.05)excluding the disinfectant residual;while the rate of single standard turbidity before earthquake was higher than that of after(χ2=16.61,P<0.05).Conclusion The influence of earthquake on the drinking-water of rural area are mainly turbidity,smell and taste,which indicate that the color,turbidity,smell and taste should be screened at first in emergency,and then decided whether monitored at site or in laboratory.更多还原