EPA Method 8131 Aniline and Selected Derivatives by Gas Chromatograph

《EPA Method 8131 Aniline and Selected Derivatives by Gas Chromatograph》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、METHOD8131ANILINEANDSELECTEDDERIVATIVESBYGASCHROMATOGRAPHY1.0SCOPEANDAPPLICATION1.1Method8131isusedtodetermine(bygaschromatographywithaspecificdetector)theconcentrationofanilineandcertainderivativesofanilineinextractspreparedfromenvironmentalsamplesandRCRAwastes.Ithasbeenvalidatedforaqueousmatrices.

2、Applicationtoothermatricesmustbevalidatedbydevelopingspikerecoverydata.Thefollowingcompoundscanbedeterminedbythismethod:aCompoundCASNo.Aniline62-53-34-Bromoaniline106-40-12-Bromo-6-chloro-4-nitroaniline99-29-62-Bromo-4,6-dinitroaniline1817-73-82-Chloroaniline95-51-23-Chloroaniline108-42-94-Chloroani

3、line106-47-82-Chloro-4,6-dinitroaniline3531-19-92-Chloro-4-nitroaniline121-87-94-Chloro-2-nitroaniline89-63-42,6-Dibromo-4-nitroaniline827-94-13,4-Dichloroaniline95-76-12,6-Dichloro-4-nitroaniline99-30-92,4-Dinitroaniline97-02-92-Nitroaniline88-74-43-Nitroaniline99-09-24-Nitroaniline100-01-62,4,6-Tr

4、ichloroaniline634-93-52,4,5-Trichloroaniline636-30-6aChemicalAbstractServiceRegistryNumber.1.2Whenthismethodisusedtoanalyzeunfamiliarsamplesforanyorallofthetargetanalytes,compoundidentificationsshouldbesupportedbyatleastoneadditionalqualitativetechnique.Thismethoddescribesanalyticalconditionsforasec

5、ondgaschromatographiccolumnthatcanbeusedtoconfirmmeasurementsmadewiththeprimarycolumn.Itishighlyrecommendedthatgaschromatography/massspectrometrybeutilizedforabsoluteanalyteidentificationwhenanalyzingunfamiliarsamples,ifconcentrationpermits.SeeSection8.6forguidance.However,theuseoftheNPDminimizesthe

6、possibilityoffalsepositives.1.3Themethoddetectionlimit(MDL)foreachtargetanalyteisgiveninTable1.TheMDLforaspecificsamplemaydifferfromthoselisted,dependinguponthenatureofinterferencesintheCD-ROM8131-1Revision0December1996samplematrix.Table2providesguidanceonthecalculationofestimatedquantitationlimits(

7、EQLs)forvariousmatrices.1.4Anilineandmanyanilinederivativesoftenresultinerraticresponses,therebyrequiringfrequentcolumnmaintenanceandrecalibration.1.5Thismethodisrestrictedtousebyorunderthesupervision