资源描述：
《EPA Method 8081A Organochlorine Pesticides 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、METHOD8081AORGANOCHLORINEPESTICIDESBYGASCHROMATOGRAPHY1.0SCOPEANDAPPLICATION1.1Method8081isusedtodeterminetheconcentrationsofvariousorganochlorinepesticidesinextractsfromsolidandliquidmatrices,usingfused-silica,open-tubular,capillarycolumnswithelectroncapturedetectors(ECD).Whencompar
2、edtothepackedcolumns,thesecolumnsofferimprovedresolution,betterselectivity,increasedsensitivity,andfasteranalysis.Thecompoundslistedbelowmaybedeterminedbyeitherasingle-ordual-columnanalysissystem.CompoundCASRegistryNo.Aldrin309-00-2"-BHC319-84-6$-BHC319-85-7(-BHC(Lindane)58-89-9*-BHC
3、319-86-8Chlorobenzilate510-15-6"-Chlordane5103-71-9(-Chlordane5103-74-2Chlordane-nototherwisespecified57-74-9DBCP96-12-84,4'-DDD72-54-84,4'-DDE72-55-94,4'-DDT50-29-3Diallate2303-16-4Dieldrin60-57-1EndosulfanI959-98-8EndosulfanII33213-65-9Endosulfansulfate1031-07-8Endrin72-20-8Endrina
4、ldehyde7421-93-4Endrinketone53494-70-5Heptachlor76-44-8Heptachlorepoxide1024-57-3Hexachlorobenzene118-74-1Hexachlorocyclopentadiene77-47-4Isodrin465-73-6Methoxychlor72-43-5Toxaphene8001-35-21.2ThisrevisionofMethod8081nolongerincludesthePCBsasAroclorsinthelistoftargetanalytes.Theanaly
5、sisofPCBsshouldbeundertakenusingMethod8082,whichincludesspecificcleanupandquantitationproceduresdesignedforPCBanalysis.ThischangewasmadetoobtainPCBdataofbetterqualityandtoeliminatethecomplicationsinherentinacombinedorganochlorinepesticideandPCBmethod.Therefore,ifthepresenceofPCBsisex
6、pected,useMethod8082forCD-ROM8081A-1Revision1December1996PCBanalyses,andthismethod(8081)fortheorganochlorinepesticides.IfthereisnoinformationofthelikelypresenceofPCBs,eitheremployaPCB-specificscreeningproceduresuchasanimmunoassay(e.g.,Method4020),orsplitthesampleextractpriortoanyclea
7、nupsteps,andprocesspartoftheextractfororganochlorinepesticideanalysisandtheotherportionforPCBanalysisusingMethod8082.1.3Theanalystmustselectcolumns,detectorsandcalibrationproceduresmostappropriateforthespecificanalytesofinterestinastudy.Matrix-specificperformancedatamustbeestablished
8、andthestabil
