摘要
目的:探讨净水器处理水水质在感官性状、一般化学性状、毒理学和微生物指标方面是否优于自来水。方法:在太原市5个不同居民小区采集5份匹配的自来水和净化水水样,并用相应的检测方法对浑浊度、pH值、总硬度、溶解氧、铝、铁、锰、锌、硒、汞、砷、铅、镉、总铬、总大肠菌群等15项指标进行检测。结果:自来水中镉和铁含量超标率均为100%,净化水中镉和铁含量超标率分别为40%和80%;两种水体的其他三类指标均达到我国生活饮用水卫生标准。结论:太原市自来水镉、铁含量在一定地区存在超标。净化水总硬度偏低,许多有毒重金属含量较自来水更安全。
Objective：To investigate if depurative water was better than tap water in sensory properties,general chemical characters,toxicology and microorganism index.Methods： Five pairs of tap water and purified water were sampled from five residential areas in Taiyuan.Turbidity degree,pH,total hardness,dissolved oxygen,levels of aluminum,iron,manganese,zinc,selenium,mercury,arsenic,lead,cadmium and total chromium,total coliform group were detected by corresponding methods.Results： The levels of cadmium and iron in all tap water samples exceeded the limit in ＂sanitary standard for drinking water＂,however,the exceeding proportions of cadmium and iron in depurative water were 40% and 80%.Other three kinds of index in these two water samples were conformed to meet the standard.Conclusion： The concentrations of cadmium and iron in tap water exceed the standard in some areas of Taiyuan.Total hardness of depurative water is lower than tap water,toxic heavy metals in depurative water are much safer compared with tap water.
出处
《中国卫生检验杂志》
北大核心
2012年第12期2979-2980,共2页
Chinese Journal of Health Laboratory Technology
基金
山西医科大学大学生创新基金课题2010
关键词
反渗透
净化水
自来水
水质
Reverse osmosis
Depurative water
Tap water
Water quality
