2009年即墨市部分中小学饮用水水质检测分析

目的]了解即墨市部分中小学生活饮用水卫生状况，为保证全市中小学校学生饮用水安全提供科学的依据。方法]2009年从即墨市253所中小学中随机抽取71所中小学的饮用水进行了27项指标水质检测和评价。结果]71份饮用水合格率28．2％。在检测的27项指标中，氰化物、锌、砷、汞、铅、铁、锰、铜、pH、耗氧量、臭和味、浑浊度、硫酸盐、铬（六价）、挥发酚类、阴离子合成洗涤剂均合格。其余均有不合格样品。不合格的水样中，总硬度、细菌总数、硝酸盐氮、总大肠菌群、耐热大肠菌群5项合格率均低于90%。结论]即墨市中小学校饮用水存在安全隐患；对学生的健康存在一定的危害，有待进一步的改善学生饮用水的环境状况。

Analysis of the Quality of Drinking Water in Primary and Middle Schools in Jimo City in 2009

Objective]To understand the hygienic status of drinking water in primary and middle schools in Jimo city, to provide scientific basis for safeguarding the drinking water in the schools of the whole city. Methods]Water samples randomly collected from 71 of the 253 schools were tested for 27 items and the result was evaluated in 2009 in Jimo city. Results]The qualified rate of the 71 samples was 28.2 %. Of the 27 indicators, cyanide, zinc, arsenic, mercury,lead, iron, manganese, copper, pH, oxygen consumption, smell and taste, turbidity, sulfate, chromium （ hexavalent）, volatile phenol, anionic synthetic detergents were up to standard. The remaining items are unqualified. Of them the qualified rate of total hardness,total amount of bacteria, nitrate nitrogen, total amount of coli group and thermotolerant coliform bacteria was lower than 90 %. Conclusion]There was potential safety hazard in drinking water in primary and middle schools,it can risk the students＇ health. The quality of drinking water need to be improved.