ISO 7934 AMD 1-1998 Stationary source emissions - Determination of the mass concentration of sulfur dioxide - Hydrogen peroxide barium perchlorate Thorin method.pdf

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1、A Numroderfrence ISO7934:1989/Amd.1:1998 (F) NORME INTERNATIONALE ISO 7934 Premiredition 19890801 AMENDEMENT1 19980701 missionsdesourcesfixes Dterminationdelaconcentrationen massededioxydedesoufreMthodeau peroxydedhydrogne/perchloratede baryum/Thorin AMENDEMENT1 StationarysourceemissionsDeterminatio

2、nofthemassconcentrationof sulfurdioxideHydrogenperoxide/bariumperchlorate/Thorinmethod AMENDMENT1ISO7934:1989/Amd.1:1998(F) ISO1998 Droitsdereproductionrservs.Saufprescriptiondiffrente,aucunepartiedecettepubli cationnepeuttrereproduiteniutilisesousquelqueformequecesoitetparaucunpro cd,lectroniqueoum

3、canique,ycomprislaphotocopieetlesmicrofilms,sanslaccord critdelditeur. Organisationinternationaledenormalisation Casepostale56 CH1211Genve20 Suisse Internet centraliso.ch X.400 c=ch;a=400net;p=iso;o=isocs;s=central ImprimenSuisse ii Avantpropos LISO(Organisationinternationaledenormalisation)estunefd

4、ration mondialedorganismesnationauxdenormalisation(comitsmembresde lISO).LlaborationdesNormesinternationalesestengnralconfieaux comitstechniquesdelISO.Chaquecomitmembreintressparune tudealedroitdefairepartieducomittechniquecrceteffet.Les organisationsinternationales,gouvernementalesetnongouvernement

5、ales, enliaisonaveclISOparticipentgalementauxtravaux.LISOcollabore troitementaveclaCommissionlectrotechniqueinternationale(CEI)en cequiconcernelanormalisationlectrotechnique. LesprojetsdeNormesinternationalesadoptsparlescomitstechniques sontsoumisauxcomitsmembrespourvote.Leurpublicationcomme Normesi

6、nternationalesrequiertlapprobationde75 %aumoinsdes comitsmembresvotants. LAmendement1laNormeinternationaleISO7934:1989atlabor parlecomittechniqueISO/TC146,Qualitdelair, souscomit SC1, missionsdesourcesfixes .ISO ISO7934:1989/Amd.1:1998(F) iii Introduction Desmesuragescomparatifsdelaconcentrationenma

7、ssededioxydede soufre(lafoisdansdesconditionsdelaboratoireetdesconditions relles)effectusenutilisant,respectivement,lamthodedelISO7934,la mthodedelISO11632etlamthodeinstrumentaleparUVdelISO7935 ontrvlquelesvaleursobtenuesparlamthodedelISO7934sont sensiblementinfrieures,delordrede5%10%,cellesobtenues

8、par lesautresmthodes. Destudesontmontrqueladiffrencedisparaissaitlorsquelonutilisait nonplusdelhydroxydedesodium,maisdelhydroxydedepotassiumpour ajusterlepHdelasolutiondabsorptionavantlanalyse.Cestpourquoi lesnouveauxparagraphes4.4et6.7ciaprsremplacentceuxde lISO7934:1989.Demme,pourdesraisonspratiqu

9、es,lescnesmleet femelledufiltreparticulessontchangsdanslafigure1.ISO ISO7934:1989/Amd.1:1998(F) 1 missionsdesourcesfixesDterminationdelaconcentration enmassededioxydedesoufreMthodeauperoxyde dhydrogne/perchloratedebaryum/Thorin AMENDEMENT1 Page2 Remplacerleparagraphe4.4existantparlesuivant: 4.4 Hydr

10、oxydedepotassium ,solutiontitre, c(KOH)=0,1mol/l. Page3 Remplacerleparagraphe6.7existantparlesuivant: 6.7laidedupHmtre(5.2),ajuster3,5lepHdelasolutionchantilloncombineenluiajoutantlevolume appropridelasolutiontitredhydroxydedepotassium(4.4)oudelasolutiontitredacideperchlorique(4.5), seloncequiestreq

11、uis.Verserlasolutionchantilloncombineainsiobtenuedansunefiolejaugeuntraitde capacitnominaleadquate(voirtableau1). NOTELesvolumesdelasolutionchantilloncombinedonnsdansletableau1peuventtredpassslorsquedesgaz contenantunforttauxdhumiditsedgagent.Ilfautalorsutiliserunefiolejaugedeplusgrandvolume. Complt

12、erjusquautraitrepreavecdeleauethomogniser.ISO7934:1989/Amd.1:1998(F) ISO 2 Page6 Remplacerlafigure1existanteparlanouvellefigure1. Dimensionsenmillimtres Lgende 1 Lainedequartz, environ0,5g0,8g, progressivementtasse 2 Plaqueperforeou fritte Figure1ExempledefiltreparticulesISO7934:1989/Amd.1:1998(F) ISO ICS13.040.40 Descripteurs:air,qualit,pollutionatmosphrique,missiondegazdchappement,analysechimique,dosage,anhydridesulfureux. Prixbassur2pages

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