Designation:D3618−05(Reapproved2015)StandardTestMethodforDetectionofLeadinPaintandDriedPaintFilms1ThisstandardisissuedunderthefixeddesignationD3618;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodisintendedasascreeningtesttodetermineifthesolidsinapaintcontainmorethan0.5%lead.Thetestdescribedbarelydetectsthepresenceof0.4%butgivesadefinitepositiveresultatthe0.5%level.NOTE1—Thistestmethodmaybeusedtodetectthepresenceofleadatconcentrationshigherorlowerthan0.5%bymakingappropriatechangesinthespecimensizeandreagentquantitiesspecified.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Paintsgivinganunexpectedpositiveorquestionableresultshouldbeanalyzedquantitativelyforlead,usingTestMethodD3335.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.SpecifichazardstatementsaregiveninSection7.2.ReferencedDocuments2.1ASTMStandards:2D1193SpecificationforReagentWaterD2832GuideforDeterminingVolatileandNonvolatileCon-tentofPaintandRelatedCoatingsD3335TestMethodforLowConcentrationsofLead,Cadmium,andCobaltinPaintbyAtomicAbsorptionSpectroscopy3.SummaryofTestMethod3.1Thesampleofliquidpaintordriedfilmispreparedbydryashingaweighedspecimenat475to500°C.Theashisextractedwithhotsodiumhydroxidesolutionandadropoftheextractistransferredtofilterpaper.Leadpresentisoxidizedtoleadperoxidewithbrominewater,thentreatedwith“tetrabase”toproduceabluequinoidalsalt.Knownamountsofleadareaddedtostandardpaintsthatareconcurrentlytestedtoprovideabaseforcomparison.4.SignificanceandUse4.1Thepermissiblelevelofheavymetalsincertaincoat-ingsis...
