1、5SOInternationa1.StandardISO4685Firstedition2024-01Waterqua1.ityRadium226TestmethodusingICP-MSQua1.itedeVeauRadium226MethodedessaiparICP-MSReferencenumberISO4685:2024(en)COPYRIGHTPROTECTEDDOCUMENTISO2024WintGhcdBdHUWwdotherwiseianSit111.CrW4wErtiwnbxtt11mik)hrtRd11kHimhwfrpn911tnmcnpyiptheinternetor
2、anintranet,withoutpriorwrittenpermission.PermissiononberequestedfromeitherISOatthebe1.oworISOsmemberbodyinthecountryoftherequester.b,Vyfrfiandonnet8CH-1214VcmicrrGcncvaPhoae:*41227490111聊独te:薪括嬴OQrgPub1.ishedinSwitzer1.andContentsPageForeword”Iivitroductionv2 SOPe13 Normativereferences1Term,definiti
3、onsandsymbo1.s23.1 Termsanddefinitions.24 3.2Symbo1.s25 Princip1.e36 Sainp1.ingandsainp1.estorage4Chemica1.reagentsandequipment56.1 Genera1.S6.2 Chemica1.reagents578 Separation.5(Uahtycontro1.68.1 Gene1.a1.68.2 Variab1.esthatcaninf1.uencethemeasurement69Expressionofresu1.ts79.1 Dataana1.ysis79.2 Bac
4、kground79.4 Interna1.CaIi1.BB1.iCk1.rd9.5 Detection1.imit89.6 1.imitofquantification810 Testreport9AnnexA(informative)Chemica1.separationof22dtausinga-cationexchangeandacrownetherbasedextractionchromatographyresin20421,22.2311Bib1.iography14ForewordISO(theInternationa1.OrganizationforStandardization
5、)isaWOr1.dwidefederationofnationa1.standardsIK佃iest乎BuimatHh1.QnitidMEA岷nunribefprbp呷WbrtettndtiOna1.St8ud0dbtainedrWithassadateduncertainties,asNOTE1theva1.ue4notthedoseAnnexoffrom4,the7and8NOTE2Theguidance1.eve1.ca1.cu1.atedinReference4istheactivityconcentrationthatresu1.tsinaneffectivedoseof0,1th
6、at-1toaveryoftheoffortointakeof21.d-ovh1.chIsnotwaterfortogivetoISeffectiveadversehea1.thefTects4Thedocumentcontainsinthissupportcanusedforwhichneedtoofwa1.ers.Rawatersamp1.es,suchassamp1.evo1.umeandcountingtimecanbemadeifneededtoensurethatthedecisionthresho1.d,detection1.imit,anduncertaintiesarebe1
7、owtherequired1.imits.Thiscanbedoneforsevera1.reasonssuchasISO4685:2024(en)Internationa1.StandardWaterqua1.ityRadium226TestmethodusingICP-MSWARNINGPersonsusingthisdocumentshou1.dbefami1.iarwithnorma1.1.aboratorypractice.Thisdocumentdoesnotpurporttoaddressa1.1.ofthesafetyprob1.ems,ifany,associatedwit
8、hitsuse.Itistheresponsibi1.ityoftheusertoestab1.ishappropriatesafetyandhea1.thpracticesIMPORTANTItisessentia1.thattestsconductedaccordingtothisdocumentbecarriedoutbysuitab1.ytrainedstaff.1Scopespectrometry(ICP-MS),Themassconcentrationsobtainedcanbeconvertedintoactivityconcentrations.detectionefficie
9、ncy,depcndscountingtimesamp1.echemica1.ins1.rumcntdetectionthebackgroundmethoddescribedThismethodSamp1.eswithconcentrationshigherwaterBq1.activityconcentrationsbetweenperformed.andInthismethod,fi1.trationmethod.Theana1.ysisnecessary.inso1.ub1.eana1.ysisrequiresminera1.izationstepmatter2isNormativere
10、sponsibi1.itytoensuretheva1.idityofthistestmethodforthewatersamp1.estested.requirementsdocumentsdocument.referreddatedreferences,suchWayeditionsomeapp1.ies.theirndatedconstitutesISO3696,Waterforana1.ytica1.1.aboratoryuseSpecificationandtestmethodsmeasurement(GUM:1995)(VIM)techniquesISO5667-10,Waterq
11、ua1.itySamp1.ingPart10：Guidanceonsamp1.ingofwastewaterPart1:Genera1.guide1.inesISO2024-A1.1.rightsreservedThisdocumentspecifiesmethodstodetermine226Raconcentrationbyinductive1.ycoup1.edp1.asmamassThemethodisapp1.icab1.etotestsamp1.esofdrinkingwater,rainwater,surfaceandgroundwater,afterpropersamp1.in
12、gandhand1.ing,andtestsamp1.epreparation.The1.imitthetheandthevo1.ume,theyie1.d.Theused,1.imitofthecountrate,theinthisdocument,usingcurrent1.yavai1.ab1.eequipment,isapproximate1.y10mBq1.-,whichisbetterthantheWHOcriteriaforsafeconsumptionofdrinkingwater(1Bq1.-).4100Bq1.-.coversthemeasurementof22Rainth
13、an1at-canbemeasuredifdi1.utionis0,001Bq1.-i9Themethoddescribedinthisdocumentisapp1.icab1.eintheeventofanemergencysituation.isnotcoveredbythisoftestsamp1.eoftheThefractionof226Raadsorbedsuspendedthatisnotcoveredbythisdocument.Inthiscase,themeasurementismadeonthedifferentphasesobtained.Ittheusersrefer
14、encesThefo1.1.owingofthisareFortointhetextinon1.yathethatcitedorofForcontentreferences,the1.atesteditionofthereferenceddocu11ent(inc1.udinganyamendments)app1.ies.ISO/IECGuide98-3,UncertaintyofmeasurementPart3：GuidetotheexpressionofuncertaintyinISO/IECGuide99,Internationa1.vocabu1.aryofmetro1.ogyBasi
15、candgenera1.conceptsandassociatedtermsISO5667-1,Wa1.erqua1.itySamp1.ing-Part1:Guidanceonthedesignofsamp1.ingprogrammesandsamp1.ingISO5667-3,Waterqua1.itySamp1.infjPart3：Preservationandhand1.ingofwatersamp1.esISO17294-1:2004,Waterqua1.ityApp1.icationofinductive1.ycoup1.edp1.asmamassspectrometry(ICP-M
16、S)用HT7204应加IQBt9MWM/d-ekm睁t*Et1.U的f5UW闻盼冰小IaSmamassSPeCbometry(ICP-MS)ISO800001.0.Quantitiesandunits-Part10:Atomicandnuc1.earphysics代O/IECTetftITdeynIbO1.MumpeSnceoftestingandca1.ibration1.aboratories3.1 TermsanddefinitionsForthepurposesofthisdocument,thetermsanddefinitionsgivenin1SOIECGuide98-3,ISO
17、/IECGuide99andISO80000-10app1.y.ISOandIECmaintaintermino1.ogydatabasesforuseinstandardizationatthefo1.1.owingaddresses：ISOOn1.inebrowsingp1.atform:avai1.ab1.eathttpswwMg0bpIECE1.ectronedia:avai1.ab1.eathttpsrwrv,.e1.ectropedia.org3.2 Symbo1.sTab1.e1Symbo1.sSymbo1.DescriptionUnitC1.Specificactivityco
18、rrespondingtoonegramoftheradionuc1.ideBqg1.fmm/zmmmmNNUkkUkuUU(C)U(P)U(PV)P-PISRMUMMiurmUstandarde1.ementorisotopeperunitmassoftheinterna1.sund-givenresu1.tscanbeconvertedtoactivityconcentrationsusingthespecifictivityasaconversionfactorTab1.e2zzRaha1.Mifeandspecificactivity11jyearsmeasurementtimeIim
19、itsevera1.detectionthatcansamp1.e,inc1.udingsamp1.euptake,ana1.ysistimewithwashoutTab1.e3Examp1.esofdetectionIimit网网MeasurementbyICP-MSisaffectedbysevera1.interferences,whichareshowninb1.e-4.Vo1.umeofsamp1.eE1.ectricchargeofanionTheprincip1.esofana1.ysisusingICP-MSarcdescribedinISO172941andISO172942
20、ICP-MShasbeensuccessfu1.1.yusedtomeasuretheconcentration0f226Rainwatersamp1.es.(9).o)IsotopeheofofminiHa1.MifetcsperbeobtainedwithSpecicactivityICP-MSisgivenTab1.e3rsamp1.e.Symbo1.DescriptionUnit()VVR1.ium2!61,600(7)-1033.658(16)-101andtypica1.1.imitofdetection1.imitofdetectionAnexamp1.eofbeforethe
21、nexTheinTab1.e2.Symbo1.DescriptionUnitPVVtadium2262,701070,01MtQnIsotopeHa1.MifeSpecicactivityIsotope1.imitofdetection1.imitofdetectionTab1.e4226RainterferencesaffectingICP-MSIneasurenientInterferencenameDescriptioninterferenceAnisotopewithasimi1.armassto226RaPo1.yatomictk4xna11iinpi1.mr22S7139Tai1.
22、ingana1.ytetomeasurevithare1.ative1.yhijhabundance(10)re1.ativeNonetoana1.yteItisimportanttoensurethata1.1.potentia1.interferenceshavebeenremovedpriortomeasurement.Po1.yatomicinterferenceisthemostsignificanttypeofinterferenceaffecting226RameasurementbyICPMS.Theha1.f-1.ife0f226RaforICP-MSmeasurementm
23、eansdirectmeasurementwithoutchemica1.separationispossib1.e.Apre-concentrationandchemica1.separationcanberequiredpriortomeasurementifremova1.CanfrOniRH恻ftWM南erenceJ由将ggft新招时期也R峪emica1.ICP-MSana1.ysis.AAMe赤脚杼物8科愈抻&偎8Wft部F曲蹄inatio幅胪ThSthpactiKk标即2263SSeSSedbyrUnningIfanyinterferencehasanimpactonthe226R
24、aresu1.tthatcannotbecorrectedfor,thentheresu1.tcannotbeconsideredtobeva1.id.Thesamp1.ecanbemeasureddirect1.y,ifnecessary,afterfi1.tration(at0,45mporosity),withoutchemica1.separationofradium.Inthiscase,itisnecessarytouseamatrixeffectcorrectionwithaninterna1.standard,as/翁fribedinISO17294-1.ninterna1.s
25、tandard,forexamp1.e205TIori95Pt,isaddedtocorrectthematrixToquantifyanypotentia1.interferencecomingfromthereagents,ab1.anksamp1.eispreparedinthesame箭楸笈稳ndhngguidanceston8WUif由曲邮b曲秋Vf1.f(三I三i(0t2j驸k稀白启陶X嗝1the1.aboratoryreceivesasamp1.ethatistru1.yrepresentativeandhasnotbeendamagednormodifiedduringeith
26、ertransportationorstorage.帕躅油棍中efi1.tfi嗣UonrCt硒也知即丽Ikdt陶随,an岫柏夕4战ftA阪外包附1的喝打晒IiWEftn丽afterfi1.1.rationto1%HNO3.6 Chemica1.reagentsandequipment6.1 Genera1.Thechemica1.reagentsandequipmentusedforchemica1.treatmentandpreparationofthesamp1.esaredescribedin-Annex-A.Reagentsofanappropriatepurityshou1.dbeu
27、seddependingonthedetection1.imitrequired,impactofinterferencesonthemeasurementandtheICP-MSinstrumentdesignusedformeasurement6.2 Chemica1.reagents6.2.1 1.aboratorywater,usedasab1.ank,asfreeaspossib1.eofchemica1.orradioactiveimpurities,witharesistivityofmorethan18,2Mcmat25Candtota1.organiccarbon1.esst
28、han1g-!.Un1.essotherwisestated,waterrefersto1.aboratorywater.S也必施ftheEstri曲侬描.治acid,isusedtodeterminethebackgroundThesamereagentisa1.sousedtopreparetheca1.ibrationstandardsandfina1.samp1.esformeasurement.6.2.3 226Rastandardactivityconcentration.so1.utioncanbeusedtoprepareca1.ibrationstandardstoca1.c
29、u1.ateIhCsamp1.eb(n,An1Suitab1.c1forthis.SoIutionTheirtj,pca1.tstab1.e.Fan1,d205T1.)=2011.d(PtPQc5fogndinterna1.Stanaarapurpose.prepawthconcentraUonse1.e11ent.bcForexamp1.e5g1.ani9Si9haveftftumAr勖脚郑物R忸HPaintheICP-MS.Theusershou1.dconsu1.ttheinstrumentmanufactureronthe6.3 EquipmentUsua1.1.aboratoryeq
30、uipmentandinparticu1.arthefo1.1.owing：6i81.1.-cdMatMQddrsdtaitsofhvare.withoutOp0Hisiont11raxt10Dtteiifapbrtij)tf1.nrhmwded.sectothriUHthemanufacturersinstructionfor1.aboratorysetupandinstrumentoperation.6.3.2 Argonsupp1.y,equippedwithpressurecontro1.andsuitab1.eextractsystem.6.3.3 AUtoSamPIerifavai
31、1.ab1.e,andcompatib1.etubingforrunningmu1.tip1.esamp1.esautomatica1.1.y.ftcatP1.pbtte,p1witab4irht1.04eaccuratetransferofca1.ibrationstandardandinterna1.standardso1.ution7 SeparationItistheuser,sresponsibi1.itytoensurethata1.1.potentia1.interferenceshavebeenremoved.Theremova1.eeJMitMicejIoptitenfeec
32、esoinedhmitecft11exthedecontaminationfactorofthemethod.Suggestedchemica1.8 Qua1.itycontro1.8.3 Genera1.Measurementmethodssha1.1.beperformedbysuitab1.yski1.1.edstaffunderaqua1.ityassuranceprogram,suchastheonethatisdescribedinISO/IEC17025.Ifanana1.ysthasnotperformedthisprocedurebefore,aprecisionandbiastestshou1.dbeperformedbyrunningadup1.icatemeasurementofareferenceorspikedmateria1.Acceptance1.imitsshou1.dbewithin1.imitsspecifiedbythe1.aboratory.Asimi1.areva1.uationshou1.dbeperformedbytheana1.ystwhoroutine1.yapp1.iesthisprocedure,withaperiodicit
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