1、INTERNATIONA1.STANDARDISO4907-2editionFirst202304P1.asticsIonexchangeresin一PefminationofwatercontentofanionexchangeresinsinhydroxideformbycentrifugationReferencenumberISO490722023(E)COPYRIGHTPROTECTEDDOCUMENTISO2023IUirhM*hedbdi1.iUedotherwiseupdhi.o啪InPSd1.Mc;GeatrOn1.Wsunmaytheinternetoranintranet
2、withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbe1.oworISOsmemberbodyinthecountr)oftherequester.f),WVfifiU81.andonnet8CH-1214Vernier,GenevaPhone：M1.22749O1.11觥ftte:丽丽BQrgPub1.ishedinSwitzer1.andContentsPageForewordivIntroductionv2 Scope13 Normativereferences14 Termsa
3、nddefinitions116 Reagents27 Apparatus28 Samp1.es3Procedure38.1RemoVa1.oftheeXterna1.Water398.2Determinationofwatercontent31Ca1.cu1.ation4TestReport4Annex A (normative)Samp1.ing5Annex B (informative)Formu1.aeandderivations7ForewordISO(theInternationa1.OrganizationforStandardization)isawor1.dwidefeder
4、ationofnationa1.standardsttiugh(ISOtn11hnkoibMdm11t38wcekdHPttf1.PbCingbodymrHeDdmMiaiStandibWNSmOWhtd1.ysrrtIechnMaIcommitteehasbeenestab1.ishedhastherighttoberepresentedonthatcommittee.Internationa1.organizations,governmenta1.andnon-governmenta1.,in1.iaisonwithISO,a1.sotakepartinthework.ISOco1.1.a
5、boratesc1.ose1.ywiththee1.ectrotechnica1.standardization.Internationa1.E1.ectrotechnica1.Commission(IEC)ona1.1.mattersofTheproceduresusedtodeve1.opthisdocumentandthoseintendedforitsfurthermaintenanceare蜘硼搬OfISo雇吃用啾es,s肺1.id1.m3限11I胸M蝴曲新N蜘椰曲邮叫CCOrdanCeJ新theeditoria1.ru1.esoftheISO/IECDirectives.Part2
6、seewwsv.iso.org/direc1.ives).假)(徽ents)aWNWontakest三嬲据i帆n曲郦圈西幌斓岫躁ntm部施酬岬榴IVQdaimedpatentrightsinrespectthereof.Asofthedateofpub1.icationofthisdocument,ISOhadnorreceivednoticeof（八）patent(三)whichmayberequiredtoimp1.ementthisdocument.However,imp1.ementorsare懈怖翻琳腑tm部WWjSOQFg/眸IentS瞧媪肥加砒ion,扁MMSPOn赖岫油嬲部铀
7、解Orasuchpatentrights.Anytradeusedinthisconstitutenameendorsenent.documentisinformationgivenfortheconvenienceofusersanddoesnotForanexp1.anationofthevo1.untarynatureofstandards,themeaningofISOSPeCifiCtermsand幽幽蛔豳酒侬遮W即辆O)assEif1.眦聚inwe帼1.吼。nBar池帆四dead朝乩CSvbr11isoorgisoforeword.htmI.Thisdocumentwaschemi
8、ca1.properties,preparedbyTechnica1.CommitteeISO/TC61,P1.astics,SubcommitteeSC5,Physica1.-AIistofa1.1.partsintheISO4907seriescanbefoundontheISOwebsite.由珏轨6“典fiftsHHiesthiscaRH(HftKFhoUWWW虫面图membe内相隔nationa1.standardsbody.AIntroductionAnionexchangeresinsinhydroxideformhavepoortherma1.stabi1.ity,sodire
9、ctdryingathightemperaturesshou1.dbeavoided.Thisdocumentso1.vesthisprob1.embyformtransitionprocessandconversion.Fonnu1.aeandderivationsaregiveninnnexB.ISO4907-2:2023(E)INTERNATIONA1.STANDARDP1.asticsIonexchangeresin一Determinationofwatercontentofanionexchangeresinsinhydroxideformbycentrifugation1Scope
10、resinsNormativereferencesconstitutesrequirementsaredocument.Fordatedinreferences,on1.ySomeeditiona1.1.citedapp1.ies.contentISO3696,Waterforana1.ytica1.1.aboratoryuseSpecificationandtestmethodsexchangeresinsinhydroxideform3 TermsanddefinitionsISOandIECmaintaintermino1.ogica1.databasesforusinStandardi
11、ZatiOnatthefo1.1.owingaddresses:3.1 IECE1.ectropedia:avai1.ab1.eat411www.e1.e4FopedFghydroxideformstyreneanionexchangeresinweak-basegroups1.texistinggenera1.freeamineInc1.udesthestrong-basegroupsexistinginhydroxideformandthe3.2watercontent4 Princip1.ewatercentrifugationTheconvertcontentch1.oridesamp
12、1.ehydroch1.oricacid.theWashawaythedryingacidISO2023-A1.1.rightsFCSerVcdPart2:Thisdocumentspecifiestestmethodsbycentrifugationofwatercontentofstyreneanionexchange2inhydroxideform.Thefo1.1.owingdocumentsofthisreferredinthetextsuchawaythattheoroftheirForundatedreferences,the1.atesteditionofthereferenc
13、eddoment(inc1.udinganyamendments)app1.ies.ISO4907-3:2023,P1.asticsIonexchangeresinPart3:DeterminationofexchangecapacityofanionForthepurposesofthisdocument,thefo1.1.owingtermsanddefinitionsapp1.y.ISOOn1.inebrowsingp1.atform:avai1.ab1.eathttps:/www.iso.org/obpionictypeofstyreneanionexchangeresinsregen
14、eratedbysodiumhydroxideso1.utionundertheconditionsspecifiedinthisdocumentNote1coentr),:aintermChatform.equi1.ibriumwatercontentinhydroxideformstyreneanionexchangeresin(3.1)Removetheexterna1.waterofthestyreneanionexchangeresininhydroxideformabsorbedenoughwithbyanhydrousethano1.andwateritoftheformbyca
15、nbetestedby1.ossofmassonexcessatIOS,aswe1.1.astheincrementofmassontheformconversion.5 ReagentsWARNINGReagentsusedinthisdocumentmaycanpotentia1.hazardstohumanhea1.thandtheenvironment.Ensurethattheinstructionsfortheuseofreagentsarestrict1.yfo1.1.owed.Un1.essotherwiseindicated,thereagentsspecifiedinthi
16、sdocumentshou1.dbeana1.ytica1.grade.Commercia1.1.yavai1.ab1.e,ready-madeso1.utionsmaybeused.5.1 Anhydrousethano1.5.2Water,grade2inaccordancewithISO3696.5.3Hydroch1.oricacidso1.ution,c(HCI)=1mo1.1.Di1.ute90m1.ofhydroch1.oricacid(1,19gm1.)to1000m1.withwater.5.4Si1.vernitrateso1.utionindicator.Disso1.v
17、e5gofsi1.vernitrateinwateranddi1.uteto100m1.Storeinanamberg1.assbott1.e.5.5Hightemperatureresistantgrease.Droppingpointsha1.1.bemorethan200.6 ApparatusWARNINGApparatususedinthisdocumentmayhavepotentia1.hazardstohumanhea1.thandtheenvironment.Ensurethattheinstructionsfortheuseofapparatusarestrict1.yfo
18、1.1.owed.Usua1.1.aboratoryequipmentand,inparticu1.ar,thefo1.1.owingshou1.dbeused.6.1 (80mWatercontentsandana1.yser(seeFigure1),standardgrindingmouthBM1926rNo.1.microporous6.2Separatingfunne1.,standardgrindingmouthBM19/26.6.3minCentrifugemaximumadjustab1.espeed：5timeadjustab1.erads),higheraccracymin,
19、be1.owaccuracyis2s；capacity:4100m1.6.4Centrifuga1.fi1.tertube(seeFigure2),interna1.diameter30mm.6.S1 centrifuga1.fi1.tertube2 fi1.terp1.ateFigure2Structureofcentrifuga1.fi1.tertube7Samp1.esObtainarepresentativesamp1.eoftheionexchangeresinsinaccordancewithAnnexA.Rmp1.ePqocpikHiensha1.1.beinaccordance
20、withISO4907-3:2023,7.2.8.1Remova1.oftheexterna1.waterTransferthepre-treatedsamp1.es(seeC1.ause7)tothecentrifuga1.fi1.tertubeswithwater,and1.etthem2t5df1.WrtiImt06rauris)U1.fiOU1.min,antb11dStJitptiiienentPifoge;theenttiiridtintWaterxentrifugespeedofAfterthecentrifugecomp1.ete1.ystops,takeoutthecentr
21、ifuga1.fi1.tertubes,wipethebottomandexterna1.ITioisturetightIythefi1.tertubeswithfi1.terpaper,andthenpourthesamp1.eintoapre-driedweighingbott1.e,机TEDetenNRW0价ItheOa,F1.CoIht时Igeduringworking.6M配4频啊XMfis由蚓概p,IbRKGckthcandcociaMUviHje项high的岫1.StW维桂ase,(1053)unti1.constantweighttogether.Transferittothe
22、desiccatorandcoo1.toroomtemperature,remainingthep1.ugcoveredandthecockc1.osed.Weighthemassofthewatercontentana1.yser(mi)tothenearest0,0001g.Weigh1gofsamp1.es(8.1)intothewatercontentana1.yser,andrecordthemassofthewatercontentana1.yserandsamp1.es(m2)tothenearest0r0001g.ha*hgEQuxiapaG1.yvffi1.Htheapios
23、4anfitHdsOr490幅IhCtota1.exchangecapacity(Eoh)andthestrong-Addsomewatertothewatercontentana1.ysercontainingsamp1.estoremovebubb1.es.Add250m1.ofhydroch1.oricacidso1.utionc。他*Mo跟联部强斓京瀛e局斛悔?曾离&e11J)iWjcess流洲歌VQidsamp1.ebyanhydrousethano1.intheseparatingtunne1.ataf1.owrateof3m1./minto5m1.min,unti1.theeff
24、1.uentisfreeofch1.orideionasindicatedbysi1.vernitrateso1.utionindicator.Extracttheremainingethano1.afterwashing.Drythewatercontentana1.ysercontainingthep1.ugandcockopenintheovenfor3hat(1053).Coverthep1.ugandc1.osethe1.owercockintheoven,thentakeouttothedesiccatorandcoo1.toroom9ten(D8汕帕fittedt1.emassO
25、fthewatercontentana1.yserandsamp1.es(W3)tothenearest0,0001g.Ca1.cuIaoe1.OO-WaternfedntentaMre6fi1.d孙叫3fiFohJJJwhereXisthewatercontent,expressedinpercent(),ofanionexchangeresinsinhydroxideform;miisthemass,expressedingrams(g),oftheemptywatercontentana1.yser;m2isthemass,expressedingrams(g),ofthewaterco
26、ntentana1.yserandsamp1.ebeforedried;m3isthemass,expressedingrams(g),ofthewatercontentana1.yserandsamp1.eafterdried；EOHisthetota1.exchangecapacity,expressedinmi1.1.imo1.espergram(mmo1.g)(wet),ofanionexchangeresininhydroxideforminwetstate;Eaisthestrong-basegroupcapacity,expressedinmi1.1.imo1.espergram
27、mmo1.g)(wet),ofanionexchangeresinsinhydroxideforminwetstate.10TestReportThetestreportsha1.1.inc1.udethefo1.1.owingparticu1.ars:a) a1.1.informationnecessarytoIdentifythetestmateria1.;b) areferencetothisdocument;i.e.ISO4907-2:2023;c) thesamp1.ingmethodused;d) thetestmethodused；e) thetestresu1.tsobtai
28、nedorthefina1.referenceresu1.tsobtainedthroughrepeatabi1.itytest；0a1.1.operatingdetai1.snotspecifiedinthisdocument,orregardedasoptiona1.,anddetai1.sofanyincidentswhichmayinf1.uencethetestresu1.ts；g) anyunusua1.features(anoma1.ies)observedduringthetest;h) thedateofthetest.AnnexA(normative)Samp1.ingA.
29、1.OverviewThisannexspecifiessamp1.ingmethodsoftheionexchangeresins.Thisannexapp1.iestosamp1.etheionAiangeApparatusA.2.1Samp1.erA.2.1.1Materia1.,stain1.essstee1.orp1.astic.A.2.1.2StructureInterna1.diameter25mmto30mm,width18mmto20mm.Theopening1.engthsha1.1.nothe1.essthan80%oftheheightoftheionexchanger
30、esins1.ayer,asshownin44gH=e-A+.Thetota1.1.engthofthesamp1.ercanbeadjustedappropriate1.yaccordingtotheheightoftheionexchangeresins1.ayerinthecontainer.Ensurethattheopeningsectioncanreachthebottomofthecontainerandsection.isnot1.essthan200mmfromthesurfaceoftheionexchangeresins1.ayertotherearendNOTEThes
31、amp1.ercanbesegmented,whichisconvenienttosamp1.edifferentheightofionexchangeresinsA.2.2Separator,c1.eananddry.A.2.3Container,c1.eanandsea1.ed.3Samp1.ingru1.esA.3.1Samp1.ingWhensamp1.ingfromtheproduction1.ine,theunitofsamp1.ingsha1.1.beonekett1.e.WhniB5311W*Jesw3Wfeej3batchrandomthQniwstJc118dfbbptic
32、kaed1.prttieTtetamp9ujaber1.esssamp1.essha1.1.beca1.cu1.atedaccordingtotheformu1.an+1(inthecaseofdecima1.s,integersha1.1.betakenbyroundingmethod),andeachsha1.1.besamp1.edno1.essthantwice.Samp1.esaretakenfromthetop,midd1.eandbottomforanindividua1.uprightpackages.A.3.2Vo1.umeMorethan11.A.4ProcedureA.4
33、1Samp1.ingOpenthepackageandinsertthesamp1.ervertica1.1.ydownintothebottomoftheionexchangeresins1.ayeratdifferentparts.Topreventtheionexchangeresinsfroms1.idingdown,thesamp1.ersha1.1.befacingupwardsandti1.tingatanang1.eof1S0to2O0fromthePerPendiCU1.arbeforepu1.1.ingoutThenpourthesamp1.eintothestorage
34、4兄ner.Division6rfideStfIU,1.ebyquarteringunti1.therequiredvo1.umeisobtained.Sea1.thesamp1.estorageA.6inidentificationcontainerandstoreinacoo1.p1.ace.Thesamp1.econtainersha1.1.inc1.udethefo1.1.owingparticu1.ars：a)name；b) batchNo.;c) samp1.ingspot;d) samp1.ingdate；e) signatureofsamp1.er.AnnexBFormu1.a
35、eandderivationsWithreactioncxchangeab1.eions：strong-baseandweak-basegroupsinhydroxideanionexchangeresins,R+C+DR+BMa,Mb,MC,Md.themo1.a1.ityofionsA.B,CandDcontainedintheresinperunitmass,g/mmo1.;Formu1.aemassand-f442)resincorrespondstoeachmo1.eofexchangegroupshou1.dheaccordingto-8510001000Ec+Ed10001000
36、Ea+EbEc+EdexpressedresinFormu1.aconvertedfromC-DionictypetoA-Btype,Therefore,the1.ossofmasscanbe+EEc+EdconverttoC(CI),FB(freeaminegroup)isconverttoD(HCI).ThenoHnedir赧他minedbyFormuhMryingWekftk1.Wi=W3-W2-Eoh-K-10-3(B.12)ThenFormu1.a(B.1.i)app1.ies:X=100/h36,518Fa).311ET-1)(B.13)ICS83.080.01Pricebasedon8pages
