EPA Method 612 Chlorinated Hydrocarbon

《EPA Method 612 Chlorinated Hydrocarbon》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、APPENDIXATOPART136METHODSFORORGANICCHEMICALANALYSISOFMUNICIPALANDINDUSTRIALWASTEWATERMETHOD612ÐCHLORINATEDHYDROCARBONS1.ScopeandApplication1.1Thismethodcoversthedeterminationofcertainchlorinatedhydrocarbons.Thefollowingparameterscanbedeterminedbythismethod:ParameterSTORETNo.CASNo.2-Chlorona

2、phthalene..............................3458191-58-71,2-Dichlorobenzene..............................3453695-50-11,3-Dichlorobenzen...............................34566541-73-11,4-Dichlorobenzene..............................34571106-46-7Hexachlorobenzene...............................3970011

3、8-74-1Hexachlorobutadiene..............................3439187-68-3Hexachlorocyclopentadiene.........................3438677-47-4Hexachloroethane................................3439667-72-11,2,4-Trichlorobenzene.............................34551120-82-11.2Thisisagaschromatographic(GC)method

4、applicabletothedeterminationofthecompoundslistedaboveinmunicipalandindustrialdischargesasprovidedunder40CFRPart136.1.Whenthismethodisusedtoanalyzeunfamiliarsamplesforanyorallofthecompoundsabove,compoundidentificationsshouldbesupportedbyatleastoneadditionalqualitativetechnique.Thismethoddesc

5、ribesasecondgaschromatographiccolumnthatcanbeusedtoconfirmmeasurementsmadewiththeprimarycolumn.Method625providesgaschromatograph/massspectrometer(GC/MS)conditionsappropriateforthequalitativeandquantitativeconfirmationofresultsforalloftheparameterslistedabove,usingtheextractproducedbythismet

6、hod.11.3Themethoddetectionlimit(MDL,definedinSection14.1)foreachparameterislistedinTable1.TheMDLforaspecificwastewatermaydifferfromthoselisted,dependinguponthenatureofinterferencesinthesamplematrix.1.4ThesampleextractionandconcentrationstepsinthismethodareessentiallythesameasinMethods606,60

7、8,609,and611.Thus,asinglesamplemaybeextractedtomeasuretheparametersincludedinthescopeofeachofthesemethods.Whencleanupisrequired,theconcentrationlevelsmustbehighenoughtopermitselectingaliquots,asnecessary,toapplyappropriatecleanupprocedures.Theanalystisal