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1、METHOD5021AVOLATILEORGANICCOMPOUNDSINVARIOUSSAMPLEMATRICESUSINGEQUILIBRIUMHEADSPACEANALYSIS1.0SCOPEANDAPPLICATION1.1Thismethodisageneralpurposemethodforthepreparationofvolatileorganiccompounds(VOCs)insoil/sediment,solidwaste,aqueousandwater-misciblel
2、iquidsamplesfordeterminationbygaschromatography(GC)orgaschromatography/massspectrometry(GC/MS).Themethodisapplicabletoawiderangeoforganiccompoundsthathavesufficientlyhighvolatilitytobeeffectivelyremovedfromsamplesusinganequilibriumheadspaceprocedure.
3、Thefollowingcompoundshavebeenevaluatedusingthissamplepreparationtechnique:aCompoundCASNo.StabilityAcetone67-64-1hst-Amylalcohol(TAA)75-85-4hst-Amylethylether(TAEE)919-94-8ndt-Amylmethylether(TAME)994-05-8hsBenzene71-43-2hsBromochloromethane74-97-5hsB
4、romodichloromethane75-27-4msBromoform75-25-2hsBromomethane74-83-9hvst-Butylalcohol(TBA)75-65-0ndCarbontetrachloride56-23-5hvsChlorobenzene108-90-7hvsChloroethane75-00-3msChloroform67-66-3hsChloromethane74-87-3hvsDibromochloromethane124-48-1nd1,2-Dibr
5、omo-3-chloropropane96-12-8ms1,2-Dibromoethane106-93-4hsDibromomethane74-95-3hs1,2-Dichlorobenzene95-50-1hs1,3-Dichlorobenzene541-73-1ms1,4-Dichlorobenzene106-46-7msDichlorodifluoromethane75-71-8hs1,1-Dichloroethane75-34-3hs1,2-Dichloroethane107-06-2h
6、s1,1-Dichloroethene75-35-4hvstrans-1,2-Dichloroethene156-60-5ms1,2-Dichloropropane78-87-5hsDiisopropylether(DIPE)108-20-3hsEthanol64-17-5ndEthylbenzene100-41-4hvs5021A-1Revision1June2003aCompoundCASNo.StabilityEthyltert-butylether(ETBE)637-92-3hsHexa
7、chlorobutadiene87-68-3msIsopropanol67-63-0ndMethyltert-butylether(MTBE)1634-04-4hsMethylenechloride75-09-2hsNaphthalene91-20-3msStyrene100-42-5hvs1,1,1,2-Tetrachloroethane630-20-6hs1,1,2,2-Tetrachloroethane79-34-5ndTetrachloroethene127-18-4msToluene1
8、08-88-3hs1,2,4-Trichlorobenzene120-82-1hs1,1,1-Trichloroethane71-55-6ms1,1,2-Trichloroethane79-00-5hsTrichloroethene79-01-6msTrichlorofluoromethane75-69-4ls1,2,3-Trichloropropane96-18-4lsVinylchloride75-01-4hvso-Xylene95-47-6hvsm-Xylene108-38-3hvsp-X
