2023年1月云南化工Jan.2023第50卷第1期YunnanChemicalTechnologyVol.50,No.1doi:10.3969/j.issn.1004-275X.2023.01.32对离子交换法软化自来水效果的研究孟子纯(陆军特种作战学院,广东广州510630)摘要:通过自来水处理厂的净化、消毒后,自来水可供人们生活、生产使用。但自来水中依然含有过量的钙、镁离子,对人体有害,不可直接用作饮用水,因此,自来水应先进行软化。为了提高饮用水的质量,常用离子交换法作为软化方法。根据离子交换法净化自来水中钙离子的实验流程,以及用分光光度法检测净化效果的实验操作与数据处理方法,定性分析了离子交换法软化自来水的效果。实验结果表明,使用分光光度法检测净化效果的最佳测量波长为650nm,且处理后自来水样品吸光度值(0.055Abs、0.021Abs、0.078Abs、0.043Abs)均明显小于处理前自来水样品吸光度值(0.783Abs、0.665Abs、0.796Abs、0.634Abs),说明离子交换法可有效去除自来水中的Ca2+。关键词:离子交换法;分光光度法;净化效果;吸光度;水质软化中图分类号:X52文献标识码:A文章编号:1004-275X(2023)01-0119-03StudyontheEffectofSofteningTapWaterbyIonExchangeMengZichun(ArmySpecialOperationsCollege,Guangzhou510630,Guangdong)Abstract:Afterthepurificationanddisinfectionofthewatertreatmentplant,thetapwatercanbeusedforpeople’slifeandproduction.How-ever,tapwaterstillcontainsexcessivecalciumandmagnesiumions,whichareharmfultohumanhealthandcannotbedirectlyusedasdrinkingwater.Therefore,tapwatershouldbesoftenedfirst.Inordertoimprovethequalityofdrinkingwater,ionexchangeisoftenusedasasofteningmethod.Accordingtotheexperimentalprocessofpurifyingcalciumionsintapwaterbyionexchangemethod,aswellastheexperimentaloper-ationanddataprocessingmethodofdetectingthepurificationeffectbyspectrophotometry,theauthorqualitativelyanalyzestheeffectofsofteningtapwaterbyionexchangemethod.Theexperimentalresultsshowthatthebestmeasuringwavelengthforthepurificationeffectdetectionbyspec-trophotometryis650nm,andtheabsorbancevaluesoftapwatersamplesaftertreatment(0.055Abs,0.021Abs,0.078Abs,0.043Abs)aresignificantlysmallerthanthoseoftapwatersamplesbeforetreatment(0.783Abs,0.665Abs,0.796Abs,0.634Abs),indicatin...