Designation:E2106−00(Reapproved2011)StandardPracticeforGeneralTechniquesofLiquidChromatography-Infrared(LC/IR)andSizeExclusionChromatography-Infrared(SEC/IR)Analyses1ThisstandardisissuedunderthefixeddesignationE2106;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoverstechniquesthatareofgeneraluseinqualitativelyanalyzingmulticomponentsamplesbyusingacombinationofliquidchromatography(LC)orsizeexclusionchromatography(SEC)withinfrared(IR)spectrometrictech-niques.Thesamplemixtureisseparatedintofractionsbythechromatographicseparation.ThesefractionsaresubsequentlyanalyzedbyanIRspectroscopicmethod.1.2ThreedifferenttypesofLC/IRtechniqueshavebeenusedtoanalyzesamples(1,2).2Theseconsistofeluenttrapping(seePracticesE334),flowcellanddirectdeposition.Thesearepresentedintheorderthattheywerefirstused.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:3E131TerminologyRelatingtoMolecularSpectroscopyE168PracticesforGeneralTechniquesofInfraredQuanti-tativeAnalysisE334PracticeforGeneralTechniquesofInfraredMicro-analysisE1421PracticeforDescribingandMeasuringPerformanceofFourierTransformMid-Infrared(FT-MIR)Spectrom-eters:LevelZeroandLevelOneTests3.Terminology3.1Definitions—Fordefinitionsoftermsandsymbols,refertoTerminologyE131.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1hitqualityindex(HQI),n—thecomparisonofinfraredspectroscopicdataagainstadatabaseofreferencespectraofknowncompoundsisoftenemployedtoassistinthedetermi-nationof...
