Designation:D5197−16StandardTestMethodforDeterminationofFormaldehydeandOtherCarbonylCompoundsinAir(ActiveSamplerMethodology)1ThisstandardisissuedunderthefixeddesignationD5197;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodpresentsaprocedureforthedetermi-nationofformaldehyde(HCHO)andothercarbonylcom-pounds(aldehydesandketones)inair.Othercarbonylcom-poundsthathavebeensuccessfullyquantifiedbythismethodincludeacetaldehyde,acetone,propanal(propionaldehyde),2-butanone(methylethylketone),butyraldehyde,benzaldehyde,isovaleraldehyde,valeraldehyde,o-tolualdehyde,m-tolualdehyde,p-tolualdehyde,hexanal,and2,5-dimethylbenzaldehyde.1.2Thistestmethodinvolvesdrawingairthroughacar-tridgecontainingsilicagelcoatedwith2,4-dinitrophenylhydrazine(DNPH)reagent.CarbonylcompoundsreadilyformstablederivativeswiththeDNPHreagent.TheDNPHderivativesareanalyzedforparentaldehydesandketonesutilizinghighperformanceliquidchromatography(HPLC).ThesamplingprocedureisamodificationofU.S.EPAMethodTO-11A(see2.2).1.3ThistestmethodisbasedonthespecificreactionofcarbonylcompoundswithDNPHinthepresenceofanacidtoformstablederivativesaccordingtothereactionshowninFig.1,(where:bothRandR1arealkyloraromaticgroups(ketones),oreither,orbothRorR1isahydrogenatom(aldehydes)).Thedeterminationofformaldehydeandothercarbonylcompounds,asDNPHderivatives,issimilartothatofU.S.EPAMethodTO-11AinthatitutilizesHPLCwithUVdetectionastheanalyticalfinish.TheapplicabilityofthistestmethodisextendedbeyondthestatedapplicabilityofTO-11Atoincludeothercarbonylcompoundsthatcanbedeterminedasstatedin10.2.4.Thistestmethodissuitablefordeterminationofformaldehydeandothercarbonylcompoundsintheconcen-trationrangefromapproximately10ppbto1ppm(v/v).Lowerconcentrationsmaybedeterminedwithcarefulcontrolofcontamination,appropriate...
