EPA Method 531.1 Measurement of N-Methylcarbamoyloximes

《EPA Method 531.1 Measurement of N-Methylcarbamoyloximes》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、METHOD531.1MEASUREMENTOFN-METHYLCARBAMOYLOXIMESANDN-METHYL-CARBAMATESINWATERBYDIRECTAQUEOUSINJECTIONHPLCWITHPOSTCOLUMNDERIVATIZATIONRevision3.1EditedbyJ.W.Munch(1995)D.L.Foerst-Method531,Revision1.0(1985)T.Engel(BattelleColumbusLaboratories)-NationalPesticideSurveyMethod5,

2、Revision2.0(1987)R.L.Graves-Method531.1,Revision3.0(1989)NATIONALEXPOSURERESEARCHLABORATORYOFFICEOFRESEARCHANDDEVELOPMENTU.S.ENVIRONMENTALPROTECTIONAGENCYCINCINNATI,OHIO45268531.1-1METHOD531.1MEASUREMENTOFN-METHYLCARBAMOYLOXIMESANDN-METHYL-CARBAMATESINWATERBYDIRECTAQUEOUSI

3、NJECTIONHPLCWITHPOSTCOLUMNDERIVATIZATION1.0SCOPEANDAPPLICATION1.1Thisisahighperformanceliquidchromatographic(HPLC)methodapplicabletothedeterminationsofcertainN-methylcarbamoyloximesandN-methylcarbamatesingroundwaterandfinisheddrinkingwater.Thefollowingcompoundscanbedetermi

4、nedusingthismethod:ChemicalAbstractServicesAnalyteRegistryNumberAldicarb116-06-3AldicarbSulfone1646-88-4AldicarbSulfoxide1646-87-3Baygon114-26-1Carbaryl63-25-2Carbofuran1563-66-23-Hydroxycarbofuran16655-82-6Methiocarb2032-65-7Methomyl16752-65-7Oxamyl23135-22-01.2Thismethod

5、hasbeenvalidatedinasinglelaboratoryandestimateddetectionlimits(EDLs)andmethoddetectionlimits(MDLS)havebeendeterminedfortheanalytesabove.Observeddetectionlimitsmayvarybetweengroundwaters,dependinguponthenatureofinterferencesinthesamplematrixandthespecificinstrumentationused

6、.1.3Thismethodisrestrictedtousebyorunderthesupervisionofanalystsexperiencedintheuseofliquidchromatographyandintheinterpretationofliquidchromatograms.EachanalystmustdemonstratetheabilitytogenerateacceptableresultswiththismethodusingtheproceduredescribedinSection9.3.1.4Whent

7、hismethodisusedtoanalyzeunfamiliarsamplesforanyoralloftheanalytesabove,analyteidentificationsshouldbeconfirmedbyatleastone1additionalqualitativetechnique.531.1-22.0SUMMARYOFMETHOD2.1Thewatersampleisfilteredanda400µLaliquotisinjectedintoareversephaseHPLCcolumn.Separationoft

8、heanalytesisachievedusinggradientelutionchromatography.AfterelutionfromtheHPLCcolumn,thea