北京市石景山区地下水中总硬度含量卫生学分析_苏领彦

北京市石景山区地下水中【论著】总硬度含量卫生学分析苏领彦(北京市石景山区疾病预防控制中心,100043)摘要目的了解石景山区地下水中总硬度含量分布状况,为水源选择提供资料。方法选取石景山区80眼水源井,依据《生活饮用水卫生规范(2001)》中规定的方法进行水中总硬度检测,依据《生活饮用水卫生规范(2001)》与《GB/T14848-1993地下水质量标准》对检测结果进行评定。结果80眼水源井水总硬度平均值为397mg/L,范围为171～692mg/L,超标率为33.75%(其中Ⅳ类水占23.75%、Ⅴ类水占10%);石景山区4个区域总硬度合格率差异有显著性,其中①区+②区高于③区、③区高于④区;井深≤100m基岩上井和井深>100m基岩上井水总硬度超标率差异无显著性,而基岩上水源井水总硬度超标率高于基岩井水且差异有显著性。结论石景山区地下水总硬度总体较高,已逐渐成为影响人们生活质量的因素之一,需引起供水部门的重视;总硬度超标率呈现区域和水层差异,以后在水源选择时,老山、广宁、八角、五里坨、古城街道等区域应优先选择,而苹果园、鲁谷街道等区域最好不予选择,八宝山街道则不宜选择,且应尽量选择基岩井。关键词地下水;总硬度;分析中国图书资料分类号:R123.5文献标识码:A文章编号:1004-1257(2006)09-0641-02SubjectHygienicAnalysisoftheGeneralRigidityoftheUndergroundWaterinShijingshanDistrictofBeijngAuthorSULing-yan(ShijingshanCenterforDiseasePreventionandControl,Beijing,10043,China)Abstract[Objective]ToexplorethegeneralrigidityoftheundergroundwaterofShijingshandistrictandprovidedataforwatersourcese-lection.[Methods]Generalrigidityofthewatersamplescollectedfrom80wellswasdetectedaccordingtheHygienicStandardforDrinkingWater(2001).ThedetectionresultwasevaluatedaccordingtothatstandardandtheStandardforUndergroundWaterGB/T14848-1993.[Results]Theaveragegeneralrigidityofthewaterfromthe80wellswas397mg/Lrangedfrom171mg/Lto692mg/L.33.75%ofthemexceededthestandard,amongwhichwatertypeIVtookup23.75%andwatertypeVtookup10%.Significantdifferencewasfoundintheeligiblerateofthetotalrigidityamongthe4differenceareas.Nosignificantdifferencewasfoundinthegeneralrigidityamongthewellsthatwereover100meters'deepandbelow100meters'deep;whilesignificantdifferencewasfoundbetweenthatoftheoverbasicrocklayerandthebasicrocklayer.[Conclusion]ThegeneralrigidityoftheundergroundwaterinShijingshandistrictisgenerallyhigh,whichhasgraduallybecomeoneofthefactorsaffectingthequalityofpeople'slife.Greatimportanceshouldbeattachedtothisproblem.Theexceedingrateofthegeneralrigidityshouldbetakenintoconsiderationwhileselectingthewatersources.KeywordsUndergroundwater;Generalrigidity;Analysis饮用水中总硬度含量与人体健康的关系,至今尚未成定论。但水的硬度过高,会给人们的日常生活带来多方面的不利影响[1]。根据近年来的资料统计,石景山区居民生活饮