太仓市学校直饮水钙、镁、锶、偏硅酸含量分析  

Analysis of Calcium,Magnesium,Strontium,and Metasilicate content in direct drinking water in schools in Taicang City

作　　者：顾鸿儒 张艳秋[1] 王奕 李钊 徐波[1] GU Hongru;ZHANG Yanqiu;WANG Yi;LI Zhao;XU Bo(Taicang Center for Disease Control and Prevention,Taicang 215400,Jiangsu,China)

机构地区：[1]太仓市疾病预防控制中心职业卫生科,江苏太仓215400

出　　处：《中国校医》2024年第4期272-275,共4页Chinese Journal of School Doctor

基　　金：2023年太仓市科协软科学研究课题(202306)。

摘　　要：目的了解直饮水中钙、镁、锶、偏硅酸等有益物质的含量,为学校直饮水系统的选择提供依据。方法将太仓市所有使用直饮水系统(超滤、纳滤、反渗透)的41所中小学校纳入研究,用SPSS 26.0软件分析不同水中钙、镁、锶、偏硅酸含量。结果钙含量:自来水煮沸>自来水>超滤水>纳滤水>反渗透水(F=704.570,P<0.001);镁含量:超滤水>自来水煮沸>自来水>纳滤水>反渗透水(F=213.435,P<0.001);锶含量:自来水煮沸>自来水>超滤水>纳滤水>反渗透水(F=1895.787,P<0.001);偏硅酸含量:自来水煮沸>超滤水>自来水>纳滤水>反渗透水(H=75.507,P<0.001)。超滤水中有益物质留存率为92.8%~107.5%,锶和偏硅酸含量分别达到界限指标的126.2%和33.4%。结论带煮沸功能的超滤直饮水机是学校直饮水供水的理想方案,应加以推广。Objective This study was aimed at investigating the content of beneficial substances in water,to provide a basis for the selection of school direct drinking water systems.Methods All 41 primary and secondary schools in Taicang City using direct drinking water systems(ultrafiltration,nanofiltration,or reverse osmosis)were included in the study.SPSS 26.0 was used to compare the content of Calcium,Magnesium,Strontium,and Metasilicate in the different types of water.Results The Calcium content showed the following order:boiling tap water>tap water>ultrafiltration water>nanofiltration water>reverse osmosis water(F=704.570,P<0.001).The Magnesium content showed the following order:ul⁃trafiltration water>boiling tap water>tap water>nanofiltration water>reverse osmosis water(F=213.435,P<0.001).The Strontium content showed the following order:boiling tap water>tap water>ultrafiltration water>nanofiltration water>re⁃verse osmosis water(F=1895.787,P<0.001).The Metasilicic acid content showed the following order:boiling tap water>ul⁃trafiltration water>tap water>nanofiltration water>reverse osmosis water(H=75.507,P<0.001).The retention rate of bene⁃ficial substances in ultrafiltration water ranged from 92.8%to 107.5%,and the strontium and metasilicate content reached 126.2%and 33.4%of the boundary index,respectively.Conclusion Ultrafiltration direct drinking water devices with boil⁃ing function provide an ideal solution for the direct drinking water supply in schools.

关 键 词：学校直饮水 过滤方式 有益物质 留存率 界限指标 

分 类 号：R123[医药卫生—环境卫生学]