因子分析法在某铁路生活饮用水评价中的应用

Application of factor analysis in evaluation of drinking water in a railway area

目的通过分析查找影响辖区生活饮用水主因子,为生活饮用水防护、持续改善决策提供依据,防止水源性疾病发生。方法采用因子分析法,并借助SPSS 18.0软件对2015年西安铁路局135个生活饮用水网点检测数据进行分析评价。结果辖区影响水质的主因子为硫酸盐、氯化物、硝酸盐、硒、总大肠菌群,不同地域的因子得分均数差异有统计学意义(P<0.05)。结论辖区生活饮用水防护基本到位,影响水质的主因子主要来自于自然界,受渗沥或径流的影响,水净化和消毒不彻底。因子分析法在水质评价中是一种较好的方法。

Objective To find the main factors affecting the drinking water of the district by analysis,so as to provide references for the protection of drinking water and the persistent improvement of policy decision,which can prevent water born diseases happening. Methods The data of 135 drinking water outlets in Xi＇an railway administration in 2015 were analyzed and evaluated and analyzed by SPSS 18. 0 software. Results The main factors affecting the water quality were sulfate,chloride,nitrate,selenium,total coliform group,and there was statistical significance on the differences among the scores of factors in different regions（ P〈0. 05）. Conclusion The protection of drinking water in the district is basically refined. The main factors which affect water quality mainly come from nature and because of the influences of leachate and runoff,purification and disinfection of water are not completely. Factor analysis is good in the evaluation of water equality.