作者:标准资料网 时间:2024-05-13 15:19:50   浏览:8479   来源:标准资料网

【英文标准名称】:StandardTestMethodsforCopperinWater
【原文标准名称】:水中铜的标准试验方法
【标准号】:ASTMD1688-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D19.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:铜;测试;水
【英文主题词】:atomicabsorption;chelation;copper;flame;graphitefurnace;water
【摘要】:Copperisfoundinnaturallyoccurringmineralsprincipallyasasulfide,oxide,orcarbonate.Itmakesupapproximately0.01%oftheearthrsquo;crustandisobtainedcommerciallyfromsuchoresaschalcopyrite(CuFeS2).Copperisalsofoundinbiologicalcomplexessuchashemocyanin.Copperenterswatersuppliesthroughthenaturalprocessofdissolutionofminerals,throughindustrialeffluents,throughitsuse,ascoppersulfate,tocontrolbiologicalgrowthinsomereservoirsanddistributionsystems,andthroughcorrosionofcopperalloywaterpipes.Industrieswhosewastewatersmaycontainsignificantconcentrationsofcopperincludemining,ammunitionproduction,andmostmetalplatingandfinishingoperations.Itmayoccurinsimpleionicformorinoneofmanycomplexeswithsuchgroupsascyanide,chloride,ammonia,ororganicligands.Althoughitssalts,particularlycoppersulfate,inhibitbiologicalgrowthsuchassomealgaeandbacteria,copperisconsideredessentialtohumannutritionandisnotconsideredatoxicchemicalatconcentrationsnormallyfoundinwatersupplies.1.1Thesetestmethodscoverthedeterminationofcopperinwaterbyatomicabsorptionspectrophotometry.Threetestmethodsareincludedasfollows:TestMethodConcentrationRangeSectionsA-AtomicAbsorption,Direct0.05to5mg/LB-AtomicAbsorption,Chelation-Extraction50to500g/LC-AtomicAbsorption,GraphiteFurnace5to100g/L