EPA 9074 TURBIDIMETRIC SCREENING METHOD FOR TOTAL RECOVERABLE

《EPA 9074 TURBIDIMETRIC SCREENING METHOD FOR TOTAL RECOVERABLE》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、METHOD9074TURBIDIMETRICSCREENINGMETHODFORTOTALRECOVERABLEPETROLEUMHYDROCARBONSINSOILSW-846isnotintendedtobeananalyticaltrainingmanual.Therefore,methodproceduresarewrittenbasedontheassumptionthattheywillbeperformedbyanalystswhoareformallytrainedinatleastthebasicprinc

2、iplesofchemicalanalysisandintheuseofthesubjecttechnology.Inaddition,SW-846methods,withtheexceptionofrequiredmethodusefortheanalysisofmethod-definedparameters,areintendedtobeguidancemethodswhichcontaingeneralinformationonhowtoperformananalyticalprocedureortechniquewh

3、ichalaboratorycanuseasabasicstartingpointforgeneratingitsowndetailedStandardOperatingProcedure(SOP),eitherforitsowngeneraluseorforaspecificprojectapplication.Theperformancedataincludedinthismethodareforguidancepurposesonly,andarenotintendedtobeandmustnotbeusedasabso

4、luteQCacceptancecriteriaforpurposesoflaboratoryaccreditation.1.0SCOPEANDAPPLICATION1.1Thismethodmaybeusedtoscreensoilsamplestodeterminethetotalamountofrecoverablepetroleumhydrocarboncontaminationinsoilincludingawiderangeoffuels,oils,andgreases.Theturbidimetricapproa

5、chinthismethodisdesignedtoquicklyscreensoilsamplesusingasystemcalibratedwithablankandasinglecalibrationstandard.1.2ThedefinitionoftotalrecoverablepetroleumhydrocarbonsforthismethodcanbefoundinSec.3.0.1.3Thisscreeningtechniqueisspecificallydesignedtobeusedinthefieldb

6、utmayalsohavesomescreeningapplicationsinthelaboratory.Thesystemanalysisrangeis10-2000ppmformosthydrocarbons.1.4Thismethodisconsideredascreeningtechniquebecauseofthebroadspectrumofhydrocarbonsitdetects.Themethodmaybeespeciallyusefulinquicklydeterminingthatasitedoesno

7、tcontainhydrocarboncontamination.However,itcannotbeusedtodeterminespecifichydrocarboncompoundsorgroupsofcompoundsthatmaybepartofalargerhydrocarbonmixture.Aswithotherscreeningtechniques,itisadvisabletoconfirmacertainpercentageofbothpositiveandnegativetestresults,espe

8、ciallywhennearorabovearegulatoryactionlimitorwhenthepresenceofbackgroundorinterferinghydrocarbonsissuspected.Thelimitationsofthisprocedure