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1、TECHNICA1.SPECIFICATIONISO/TS4689-1editionFirst202303IronoresDeterminationofsu1.furcontent一su1.fategravimetricmethodMinera1.sdeferDosagedusoufre一Par1.ie1:Methodegravimtriqueausu1.fatedebaryumReferencenumberISO/TS46891:2023(E)ISO2023COPYRIGHTPROTECTEDDOCUMENTISO2023IUirhM*hedbdi1.iUedotherwiseupdhi.o
2、rbmtndH0tf1.ttoni(nc4nmpe*MqnrtiatfifiHipB1.andonnet8CH-1214Vernier,GenevaPhone：M1.22749O1.11觥ftte:丽丽BQrgPub1.ishedinSwitzer1.andContentsForewordIvIntroduction2Scope.v1Normativereferences13Termsanddefinitions145riCi1Reagents-1267Apparatus_2Samp1.ingandsamp1.es7.11.aboratorysamp1.e.337.2Preparationof
3、testsamp1.es.387.2.2 Oeechdvingsignificantcontentsofcombinedwateroroxidizab1.ecompounds.7.2.3 Oresoutsidethescopeof7.2.23.33ProCed1.Ire8.1Numberofdeterminations.338.2B1.anktestandChCktest.83UmepDrtii1.iion48.4.1DecomDositionofthetestportion48.4.2Separation4I1._9Expressionofresu1.ts59.1Ca1.cu1.ationo
4、fsu1.furcontent59.2Genera1.treatmentofresu1.ts.69.2.2RhPCktiidPiHtytrQadq38门nissib1.eto1.erance.69.2.3Ca1.cu1.ationoffina1.resu1.t.710Testreport8AnnexA(normative)F1.owsheetoftheprocedurefortheacceptanceofana1.ytica1.va1.uesfortestsamp1.es9Annex B (informative)Derivationofrepeatabi1.ityandpermissib1.
5、eto1.eranceequations.一.10Annex C (informative)Precisiondataobtainedbyinter1.aboratoryana1.ytica1.tria1.11Annex D (informative)Fi1.terdevicediagram12Bib1.iography13IntroductionInthisdocument,anewwayofme1.tingthesamp1.esfordeterminationofsu1.furcontentbybariumsu1.fategravimetricmethodisspecifiedasfo1.
6、1.ows.Samp1.esaresenh-mo1.tenwithsodiumcarbonateandzincoxide.-iR嘛W18同亚%ad,B厕HRfegneti丽fi&gY4,SiI由格!建Iff1.r而dfromtheironandotherThismethodisa1.sosuitab1.eforcomp1.exnatura1.andar1.i11cia)samp1.eana1.ysis.ThisdocumentconsistsofPart1oftheISO4689series.Ironores-Determinationofsu1.furcontent.IronoresDete
7、rminationofsu1.furcontent一Bariumsu1.fategravimetricmethod1 Scopecontentofironores.2 Normativereferencesconstitutesrequirements1.atesteditiondocment.referencedreferences,(inc1.udingamendments)app1.ies.app1.ies.Fischerandmass-1.ossmethodsISOTermsanddefinitionsOfpredriedtestsamp1.esforchemica1.ana1.ysi
8、sNotermsanddefinitionsare1.istedinthisdocument.ISOOn1.inebrowsingp1.atform:avai1.ab1.eathttps：/www.iso.org/obp4Princip1.ea)decompositionofatestportionbytreatmentwithasoda-zincoxidef1.uxmixturetoasemi-mo1.tenc)transformationso1.ution;iontobariumsu1.fatethroughadjustmentoftheacidityandadditionofejcarD
9、onate.tneInterrerenceorcr1.on,rthroughnyrogenperoxide,at11cacaanaCa1.en1.mPart1:Thisdocumentspecifiesabariumsu1.fategravimetricmethodforthedeterminationofthesu1.furThismethodisapp1.icab1.etoaconcentrationrangeofamassfractionofsu1.furfrom0,01%to3,9%innatura1.ironores,ironoreconcentratesandagg1.omerat
10、esinc1.udingsinterproducts.Thefo1.1.owingdocumentsarereferredtointhetextinsuchawaythatsomeora1.1.oftheircontentundatedreferences,theofthisoftheFordateddocumenton1.ythcanyeditioncitedForISO2596,IronoresDetenninationofhygroscopicmoistureinana1.ytica1.samp1.esGravimetric.Kar1.ISO3082,IronoresSamp1.inga
11、ndsamp1.epreparationprocedures37764rIronPreparationISOandIECmaintaintennino1.ogydatabasesforuseinstandardizationatthefo1.1.owingaddresses:IECE1.ectropedia:avai1.ab1.eathttps:/www.c1.ectropedia.org/Theana1.ysisprincip1.eisasfo1.1.ows:state；b)water1.eachingofsu1.fateionwithe1.ectro-magneticstirringand
12、fi1.trationoftheinso1.ub1.eresidue;bariumch1.orideofsu1.fated)fi1.trationofbariumsu1.fateandgravimetricdetermination；remova1.of5ReagentsDuringtheana1.ysis,useon1.yreagentsofrecognizedana1.ytica1.gradeandon1.ydisti1.1.edwaterorwaterofequiva1.entpurity.5.1 Sodiumcarbonate-zincoxidemixedf1.ux,grindNazC
13、Oato-10()mesh,b1.endNa2CO3andZnO蚣3:2柳常(mate.5.3 Hydrof1.uoricacid,p1,15gm1.5.4Hydroch1.oricacidso1.ution,mixp=1,15g/m1.Kydroch1.oricacidanddisti1.1.edwaterby1:1(vo1.umeratio).5.5Sii1.fiiricacidso1.ution,mix=1,84g/m1.su1.furicacidanddisti1.1.edwaterby1:1(vo1.umeratio).5.6Hydrogenperoxide,30%(massfrac
14、tion).5.7 Ethano1.(ethy1.).5.8Citricacidso1.ution,50%(massfraction).5.9Sodiumcarbonate(Na2CO3)r20g/1.so1.ution.5.10 Si1.vernitrate.10g/1.so1.ution.5.11 Methy1.orange,1g/1.so1.ution.5.12 Bariumch1.oride(BaCIz-ZHzO).100g/1.so1.ution.隔飒a的StPke外也磔时Iin也BMhft电酎iddM%H除。附酗画OWRfoO1.i1.柳兼电尚处丽网atureovernight.S
15、toretheso1.utioninap1.asticbott1.eand,beforeeachuse.fi1.tertherequiredvo1.umethroughac1.ose-texturefi1.terpaper.的点ionH姬Tbih1.b摘HidMhtthK喇tC6WP的噌*MQn1.对财刑1000m1.6ApparatusTheusua1.1.aboratoryapparatusand,inparticu1.ar,thefo1.1.owingsha1.1.beused.6.1G1.assp1.atesuctionfunne1.,150m1.Anexamp1.eisgivenin
16、AnnexDfFigureD.1.6.2 Waterfi1.trationmembrane,0,211.6.3Sandcorefi1.ter,300m1.Acristhecertified/referenceva1.uefortheCRMRM;isava1.uedependentonthetypeofCRM/RMused,seeFormu1.a(6).Certifiedreferencemateria1.susedforthispurposeshou1.dbepreparedandcertifiedinaccordancewithISOGuide35.Csha1.1.be产(6):SWcwhe
17、re5uisthebehveen1.aboratoriesstandarddeviationofthecertinng1.aboratories;SWCisthevrithin-1.aboratorystandarddeviationofthecertifying1.aboratories;伙istheaveragenumberofrep1.icatedeterminationsinthecertifying1.aboratories；Ncisthenumberofcertifying1.aboratories;-34?isthenumberofrep1.icatedeterminations
18、carriedoutontheCRM/RM;I1.鸣娜忸瞪瞄蹴见*盟闾解叔隘愤脚魏牌除研雁d,de1.etetheexpressionS2HWcwandregardsixasthestandarddeviationofthe1.aboratorymearACRMcertifiedbyon1.yone1.aboratoryshou1.dbeavoided,un1.essitisknowntohaveanunbiasedcertifiedva1.ue.9.2.3Ca1.cu1.ationoffina1.resu1.tThe11na1.resu1.tisthearithmeticmeanofthea
19、cceptab1.eana1.ytica1.va1.uesforthetestsamp1.eorasroundedtothethirdbythep1.acefo1.1.ows:Otherwiseoffdetermined(Ierima1.operatiqnsspeifiedin-Amx-A,ca1.cu1.atedtofivedecima1.p1.acesanda)whenthefigureinthefourthdecima1.p1.aceis1.essthan5ritisdiscardedandthefigureinthethirdb) dximahp1.fiereMphtiftftwrte
20、idCiIna1.p1.aceIS5andthereisafigureotherthanOinthefifthdecima1.p1.ace,orwhenthefigureinthefourthdecima1.p1.aceisgreaterthan5,thefigureinthec) UjHt4fiRi1.1.i1.fiFfeifKtfis5andthereisthefigureOinthefifthdecima1.p1.ace,the5isdiscardedandthefigureinthethirddecima1.p1.aceiskeptunchangedifitisO.2,4r6or8,a
21、ndisincreasedbyoneifitis1,3,5.7or9.10TestreportThetestreportsha1.1.inc1.udethefo1.1.owinginformation:a) areferencetothisdocument,i.e.ISO4689-1:2023;b) detai1.snecessaryfortheidentificationofthesamp1.e；c) resu1.toftheana1.ysis;d) referencenumberoftheresu1.t;e) anydoq脚驮由HCSMtM1.国曲史琳新dsdete11三1.岫nreM哪视
22、映M肺n(ffecifdinf1.揄Cedtheresu1.t,eitherforthetestsamp1.eortheCRM(三).AnnexA(normative)F1.owsheetoftheprocedurefortheacceptanceofana1.ytica1.va1.uesfortestsamp1.esKeyRdisasdefinedin9.2.1.FigureA.1.-F1.owsheetoftheprocedurefortheacceptanceofana1.ytica1.va1.uesfortestsamp1.esAnnexB(informativeDerivationo
23、frepeatabi1.ityandpermissib1.eto1.eranceequations很htncdrQ2遢SVanedRmPkHwihing培haf1.abdn1.Ciafa!0ra1.6用ana1.ytica1.tria1.sGraphica1.treatmentoftheprecisiondataisgiveninAnnexC.Thetestsamp1.esusedare1.istedinTab1.eB.1.NOTEThestatistica1.ana1.ySiS1.abjte.0皿SUi11GMhmiHift1.UkQnriIkesembodiedinISO5725-2.Sa
24、mp1.eSu1.furcontent%93-40(massfraction)2.6174023,92AnnexC(informative)Precisiondataobtainedbyinter1.aboratoryana1.ytica1.tria1.Su1.furcontent(massfraction)/%precision%d.FigureC.11.east-squaresfitofprecisionagainstXforsu1.furAnnexD(informative)Fi1.terdevicediagramFigureD.1.G1.assp1.atesuctionfunne1.FigureD.2Sandcorefi1.terBib1.iography?招&赋eferencemateria1.sGuidanceforcharacterizationandassessmentOfhomogeneity12他。S侬喃阮蝌华阳泡&憎心限知硼螂田用Mfffi喊襁舒拙M他由探5陶制en1.method
