Designation:D857−17StandardTestMethodforAluminuminWater1ThisstandardisissuedunderthefixeddesignationD857;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthedirectflameatomicabsorp-tiondeterminationofaluminuminthenitrousoxide-acetyleneflame.1.2Thistestmethodisapplicabletowaterscontainingdissolvedandtotalrecoverablealuminumintherangefrom0.5to5.0mg/L.Aluminumconcentrationsashighasapproxi-mately50mg/Lcanbedeterminedusingthistestmethodwithoutdilution.However,noprecisionandbiasdataareavailableforconcentrationsgreaterthan5.0mg/L.1.3Thistestmethodwastestedonreagent,natural,andpotablewaters.Itistheuser’sresponsibilitytoensurethevalidityofthistestmethodforwatersofuntestedmatrices.1.4Thesamedigestionproceduremaybeusedtodeterminetotalrecoverablenickel(TestMethodsD1886),chromium(TestMethodsD1687),cobalt(TestMethodsD3558),copper(TestMethodsD1688),iron(TestMethodsD1068),lead(TestMethodsD3559),manganese(TestMethodsD858),andzinc(TestMethodsD1691).1.5Precisionandbiasdatahavebeenobtainedonreagent,natural,andpotablewaters.Itistheresponsibilityoftheusertoensurethevalidityofthistestmethodonuntestedmatrices.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesaremathematicalconversiontoinch-poundunitsthatareprovidedforinforma-tiononlyandarenotconsideredstandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Forspecifichazardstatements,see7.5,8.4,andNote2.1.8FormerTestMethodsA(Fluorometric)andBandC(Spectrophotometric)werediscontinued.RefertoAppendixX1forhistoricalinformation.1.9Thisinternationalstandardwasdevelopedinaccor-dancewith...
