不锈钢水管卫生安全性评价

Assessment study on health safety of copper water tube

目的 评价不锈钢水管对我国水质的影响。方法 对采集的 2家国内企业生产的不锈钢水管进行检测 ,现场分析检测 ,随机选择 4家用户。结果 实验室检测中不合格指标有铅、铬、镍、砷 ;而 pH、余氯、总碱度、总硬度、溶解性总固体、硫酸盐、氯化物、硝酸盐、铜、锌、镉、锡均合格。现场检测中不合格指标有镍 ;pH、余氯、总碱度、总硬度、溶解性总固体、硫酸盐、氯化物、硝酸盐、铜、铅、锌、铬、镉、锡、砷均合格。结论 除了镍以外 。

Objective To assess the effect of steel water tube on drinking water in China.Methods In the laboratory study,to purchase steel water tube from two factories of China at market.In the applying field water quality study,to randomly select 4 users of steel water tube.Results In the laboratory study,lead,chromium,nickel and arsenic are not all up to the standards.pH,residual chlorine,total alkalinity,total hardness,total dissolved solids,sulphate,chloride,nitrate,copper,zinc,cadmium and tin are all up to the standards.In the applying field water quality study,nickel are not all up to the standards.pH,residual chlorine,total alkalinity,total hardness,total dissolved solids,sulphate,chloride,nitrate,copper,lead,zinc,chromium,cadmium,tin and arsenic are all up to the standards.Conclusion Excepting nickel,other items of steel water tube may meet the sanitary standards for drinking water in China.