【英文标准名称】:StandardTestMethodforDeterminationofAldicarb,Carbofuran,OxamylandMethomylbyLiquidChromatography/TandemMassSpectrometry
【原文标准名称】:液相色谱串联质谱法测定涕灭威、克百威、杀线威及灭多威的标准试验方法
【标准号】:ASTMD7600-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D19.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:carbamates;liquidchromatography;massspectrometry;water
【摘要】:TheN-methylcarbamate(NMC)pesticides:aldicarb,carbaryl,carbofuran,formetanatehydrochloride,methiocarb,methomyl,oxamyl,pirimicarb,propoxur,andthiodicarbhavebeenidentifiedbyEPAasworkingthroughacommonmechanism.Theyaffectthenervoussystembyreducingtheabilityoftheenzymecholinesterase.CholinesteraseinhibitionwastheprimarytoxicologicaleffectofregulatoryconcerntoEPAinassessingtheNMCx2019;sfood,drinkingwaterandresidentialrisks.Inmostofthecountry,NMCresiduesindrinkingwatersourcesareatlevelsthatarenotlikelytocontributesubstantiallytothemulti-pathwaycumulativeexposure.Shallowprivatewellsextendingthroughhighlypermeablesoilsintoshallow,acidicgroundwaterrepresentwhattheEPAbelievestobethemostvulnerabledrinkingwater.Thismethodhasbeeninvestigatedforusewithreagentandsurfacewaterfortheselectedcarbamates:aldicarb,carbofuran,oxamylandmethomyl.1.1Thisprocedurecoversthedeterminationofaldicarb,carbofuran,oxamylandmethomyl(referredtocollectivelyascarbamatesinthistestmethod)insurfacewaterbydirectinjectionusingliquidchromatography(LC)anddetectedwithtandemmassspectrometry(MS/MS).Theseanalytesarequalitativelyandquantitativelydeterminedbythismethod.Thismethodadherestomultiplereactionmonitoring(MRM)massspectrometry.1.2ThistestmethodhasbeendevelopedinsupportoftheNationalHomelandSecurityResearchCenter,USEPAbyRegion5ChicagoRegionalLaboratory.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4TheDetectionVerificationLevel(DVL)andReportingRangeforthecarbamatesarelistedinTable1.1.4.1TheDVLisrequiredtobeataconcentrationatleast3timesbelowtheReportingLimit(RL)andhaveasignal/noiseratiogreaterthan3:1.Fig.1displaysthesignal/noiseratiosoftheprimarysinglereactionmonitoring(SRM)transitionsandFig.2displaystheconfirmatorySRMtransitionsattheDVLsforthecarbamates.1.4.2ThereportinglimitistheconcentrationoftheLevel1calibrationstandardasshowninTable2forthecarbamates.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_50
【页数】:10P.;A4
【正文语种】:英语