Designation:D6827−02(Reapproved2008)StandardTestMethodforZincAnalysisofFloorPolishesandFloorPolishPolymersByFlameAtomicAbsorption(A.A.)1ThisstandardisissuedunderthefixeddesignationD6827;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thislaboratorytestmethodcoverstheanalysisoffloorpolishesandfloorpolishpolymersfortotalzinccontent.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.SignificanceandUse2.1Thistestmethodisgenerallyacceptedfortheprepara-tionoffloorpolishandfloorpolishpolymersfortheanalysisoftotalzinccontent.Knowingthetotalzinccontentofafloorfinishorpolymercanaidindeterminingtheproperdisposalmethodofusedorunwantedproduct.3.Apparatus3.1AnalyticalBalance,accurateto0.001g.3.2HotPlate.3.3VentilationHood.4.ReagentsandMaterials4.1100mLBeaker.4.21:1NitricAcidSolution.4.3DisposablePipets.4.4100-mLVolumetricFlask.4.5DeionizedWater.4.6FilterFunnel.4.7FilterPaper.5.Procedure5.1SamplePreparation:5.1.1Beforeasamplecanberunfortotalzinc,itmustbepreparedsothatanyinsolublezincwillbesolubilizedandnotremovedbythefilteringprocess.Bypreparingthesampleinthefollowingway,theanalysiswillbemuchmoreaccurate(testingtotalzincinsteadofsolublezinc).Theprepmethodwillalsolessenthechanceofcloggingthenebulizeroftheatomicabsorptionunitwithparticulatematter.5.2PrepMethod:5.2.1Important—Allglasswareusedmustbewashedwith1:1nitricacidsolutionandrinsedwithdeionizedwatertoeliminatecontamination.5.2.2Weighapproximately50gofsampleintoa100–mLbeaker.Recordtheexactweightto0.001gontheanalysissheet.5.2.3Addapproximately5mLofa1:1nitricacidsolutiontothebeaker.Theamountneednotbeexact.Twodisposablepi...
