SIST EN ISO 14254:2011
(Main)Soil quality - Determination of exchangeable acidity in barium chloride extracts (ISO 14254:2001)
Soil quality - Determination of exchangeable acidity in barium chloride extracts (ISO 14254:2001)
This International Standard specifies a method for the determination of exchangeable acidity in barium chloride extracts of soil samples obtained according to ISO 11260.
The procedure described herein mainly concerns the determination of total exchangeable acidity by means of a fixed-pH end-point titration (see note). Two optional procedures are also given, describing respectively, determinations of free H+ acidity and of aluminium in the extracts.
This International Standard is applicable to all types of air-dry soil samples which have been pretreated in accordance with ISO 11464.
NOTE Titration of exchangeable acidity by means of a fixed-pH end-point may not be specific to a given acid species. The endpoint pH value retained is 7,8, corresponding to complete precipitation of Al+3 ions in synthetic solutions. Titration of soil extracts to this pH may also include some more weakly ionized species or weak acid organic compounds.
Bodenbeschaffenheit - Bestimmung der Austauschacidität in Bariumchloridextrakten (ISO 14254:2001)
Diese Internationale Norm legt ein Verfahren zur Bestimmung der Austauschacidität in Bariumchloridextrakten von Bodenproben fest, die nach ISO 11260 gewonnen wurden.
Das beschriebene Verfahren beinhaltet hauptsächlich die Bestimmung der austauschbaren Gesamtacidität mittels einer Titration bis zu einem festgelegten pH-Endpunkt (siehe Anmerkung). Es werden jedoch zwei zusätzliche und fakultative Verfahren angegeben, die zum einen die Bestimmung der freien H+-Acidität und zum anderen des Aluminiums in den Extrakten beschreiben.
Diese Internationale Norm ist auf alle Arten trockener Bodenproben anwendbar, die nach ISO 11464 vorbehandelt wurden.
ANMERKUNG Die Titration der austauschbaren Acidität unter Anwendung eines festen pH-Endpunktes braucht nicht für angegebene Säurearten spezifisch zu sein. Der erhaltene Wert des pH-Endpunktes von 7,8 entspricht der vollständigen Ausfällung der AI+++-lonen in künstlich hergestellten Lösungen. Die Titration von Bodenextrakten bis zu diesem pH-Endpunkt kann auch Spezies geringerer Ionenstärke oder schwach saure organische Verbindungen einschließen.
Qualité du sol - Détermination de l'acidité échangeable dans un extrait au chlorure de baryum (ISO 14254:2001)
La présente Norme internationale spécifie une méthode de détermination de l'acidité échangeable dans des extraits par chlorure de baryum d'échantillons de sol prélevés conformément à l'ISO 11260. La procédure décrite dans la présente Norme internationale concerne principalement la détermination de l'acidité échangeable totale par titrage à une valeur limite de pH fixe (voir note). Deux autres procédures facultatives sont également décrites, portant respectivement sur le titrage de l'acidité par détermination de l'acidité H+ libre et de la concentration d'aluminium dans les extraits. La présente Norme internationale est applicable à tous les types d'échantillon séchés à l'air qui ont été prétraités conformément à l'ISO 11464.
NOTE Le titrage de l'acidité échangeable au moyen d'une valeur limite de pH fixe peut ne pas être propre à un type d'acide donné. La valeur limite de pH retenue est 7,8, ce qui correspond à la précipitation complète des ions AI +3 dans des solutions synthétiques. Le titrage d'extraits de sol à ce pH peut également inclure certaines espèces plus faiblement ionisées ou des composés organiques faiblement acides.
Kakovost tal - Določevanje izmenljive kislosti po ekstrakciji z barijevim kloridom (ISO 14254:2001)
Ta mednarodni standard opredeljuje metodo za določevanje izmenljive kislosti po ekstrakciji vzorcev tal, pridobljenih v skladu z ISO 11260, z barijevim kloridom.
Opisani postopek v glavnem obravnava določevanje skupne izmenljive kislosti z ekvivalentno točko titracije s fiksnim pH (glej opombo). Navedena sta tudi dva izbirna postopka, ki opisujeta določevanje proste kislosti H+ oziroma aluminija v ekstraktih.
Ta mednarodni standard velja za vse vrste vzorcev tal, posušenih na zraku, ki so bili predobdelani v skladu z ISO 11464.
OPOMBA: Titracija izmenljive kislosti z ekvivalentno točko s fiksnim pH morda ni specifična za dano vrsto kisline. Zadržana ekvivalentna vrednost pH je 7,8, kar ustreza popolnemu obarjanju ionov Al+3 v sintetičnih raztopinah. Titracija ekstraktov tal do tega pH lahko vključuje tudi nekatere šibkeje ionizirane vrste ali organske spojine s šibkimi kislinami.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 14254:2011
01-november-2011
.DNRYRVWWDO'RORþHYDQMHL]PHQOMLYHNLVORVWLSRHNVWUDNFLML]EDULMHYLPNORULGRP
,62
Soil quality - Determination of exchangeable acidity in barium chloride extracts (ISO
14254:2001)
Bodenbeschaffenheit - Bestimmung der Austauschacidität in Bariumchloridextrakten
(ISO 14254:2001)
Qualité du sol - Détermination de l'acidité échangeable dans un extrait au chlorure de
baryum (ISO 14254:2001)
Ta slovenski standard je istoveten z: EN ISO 14254:2011
ICS:
13.080.10 .HPLMVNH]QDþLOQRVWLWDO Chemical characteristics of
soils
SIST EN ISO 14254:2011 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 14254:2011
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SIST EN ISO 14254:2011
EUROPEAN STANDARD
EN ISO 14254
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2011
ICS 13.080.10
English Version
Soil quality - Determination of exchangeable acidity in barium
chloride extracts (ISO 14254:2001)
Qualité du sol - Détermination de l'acidité échangeable Bodenbeschaffenheit - Bestimmung der Austauschacidität
dans un extrait au chlorure de baryum (ISO 14254:2001) in Bariumchloridextrakten (ISO 14254:2001)
This European Standard was approved by CEN on 3 June 2011.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14254:2011: E
worldwide for CEN national Members.
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SIST EN ISO 14254:2011
EN ISO 14254:2011 (E)
Contents Page
Foreword .3
2
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SIST EN ISO 14254:2011
EN ISO 14254:2011 (E)
Foreword
The text of ISO 14254:2001 has been prepared by Technical Committee ISO/TC 190 “Soil quality” of the
International Organization for Standardization (ISO) and has been taken over as EN ISO 14254:2011 by
Technical Committee CEN/TC 345 “Characterization of soils” the secretariat of which is held by NEN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by December 2011, and conflicting national standards shall be withdrawn
at the latest by December 2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 14254:2001 has been approved by CEN as a EN ISO 14254:2011 without any modification.
3
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SIST EN ISO 14254:2011
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SIST EN ISO 14254:2011
INTERNATIONAL ISO
STANDARD 14254
First edition
2001-08-15
Soil quality — Determination of
exchangeable acidity in barium chloride
extracts
Qualité du sol — Détermination de l'acidité échangeable dans un extrait au
chlorure de baryum
Reference number
ISO 14254:2001(E)
© ISO 2001
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SIST EN ISO 14254:2011
ISO 14254:2001(E)
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ii ISO 2001 – All rights reserved
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SIST EN ISO 14254:2011
ISO 14254:2001(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 14254 was prepared by Technical Committee ISO/TC 190, Soil quality, Subcommittee
SC 3, Chemical methods and soil characteristics.
©
ISO 2001 – All rights reserved iii
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SIST EN ISO 14254:2011
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SIST EN ISO 14254:2011
INTERNATIONAL STANDARD ISO 14254:2001(E)
Soil quality — Determination of exchangeable acidity in barium
chloride extracts
1 Scope
This International Standard specifies a method for the determination of exchangeable acidity in barium chloride
extracts of soil samples obtained according to ISO 11260.
The procedure described herein mainly concerns the determination of total exchangeable acidity by means of a
fixed-pH end-point titration (see note). Two optional procedures are also given, describing respectively,
+
determinations of free H acidity and of aluminium in the extracts.
This International Standard is applicable to all types of air-dry soil samples which have been pretreated in
accordance with ISO 11464.
NOTE Titration of exchangeable acidity by means of a fixed-pH end-point may not be specific to a given acid species. The end-
+3
point pH value retained is 7,8, corresponding to complete precipitation of Al ions in synthetic solutions. Titration of soil extracts
to this pH may also include some more weakly ionized species or weak acid organic compounds.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this International Standard. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this International Standard are encouraged to
investigate the possibility of applying the most recent editions of the normative documents indicated below. For
undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC
maintain registers of currently valid International Standards.
ISO 3696, Water for analytical laboratory use — Specification and test methods
ISO 11260, Soil quality — Determination of effective cation exchange capacity and base saturation level using
barium chloride solution
ISO 11464, Soil quality — Pretreatment of samples for physico-chemical analyses
ISO 11465, Soil quality — Determination of dry matter and water content on a mass basis — Gravimetric method
3 Principle
−1 −1
The soil sample is extracted in accordance with ISO 11260. The 0,1 mol� l extract is titrated with a 0,05 mol� l
NaOH solution up to pH = 7,8. The use of phenolphthalein as indicator is allowed, but shall be specified in the test
report.
+
An alternative method for determination of the free H acidity is proposed, in which sodium fluoride is added to the
soil extract before the titration (BaF precipitates but an excess of NaF is not necessary). Aluminium ions are
2
+
comple
...
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bodenbeschaffenheit - Bestimmung der Austauschacidität in Bariumchloridextrakten (ISO 14254:2001)Qualité du sol - Détermination de l'acidité échangeable dans un extrait au chlorure de baryum (ISO 14254:2001)Soil quality - Determination of exchangeable acidity in barium chloride extracts (ISO 14254:2001)13.080.10Chemical characteristics of soilsICS:Ta slovenski standard je istoveten z:FprEN ISO 14254kSIST FprEN ISO 14254:2011en,fr,de01-april-2011kSIST FprEN ISO 14254:2011SLOVENSKI
STANDARD
kSIST FprEN ISO 14254:2011
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
FINAL DRAFT
FprEN ISO 14254
December 2010 ICS 13.080.10 English Version
Soil quality - Determination of exchangeable acidity in barium chloride extracts (ISO 14254:2001)
Qualité du sol - Détermination de l'acidité échangeable dans un extrait au chlorure de baryum (ISO 14254:2001)
Bodenbeschaffenheit - Bestimmung der Austauschacidität in Bariumchloridextrakten (ISO 14254:2001) This draft European Standard is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee CEN/TC 345.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. FprEN ISO 14254:2010: EkSIST FprEN ISO 14254:2011
FprEN ISO 14254:2010 (E) 2 Contents Page Foreword .3 kSIST FprEN ISO 14254:2011
FprEN ISO 14254:2010 (E) 3 Foreword The text of ISO 14254:2001 has been prepared by Technical Committee ISO/TC 190 “Soil quality” of the International Organization for Standardization (ISO) and has been taken over as FprEN ISO 14254:2010 by Technical Committee CEN/TC 345 “Characterization of soils”, the secretariat of which is held by NEN. This document is currently submitted to the Unique Acceptance Procedure. Endorsement notice The text of ISO 14254:2001 has been approved by CEN as an FprEN ISO 14254:2010 without any modification.
kSIST FprEN ISO 14254:2011
kSIST FprEN ISO 14254:2011
INTERNATIONALSTANDARDISO14254Firstedition2001-08-15ReferencenumberISO14254:2001(E)©ISO2001Soilquality—DeterminationofexchangeableacidityinbariumchlorideextractsQualitédusol—Déterminationdel'aciditééchangeabledansunextraitauchloruredebaryumkSIST FprEN ISO 14254:2011
ISO14254:2001(E)ii©ISO2001–AllrightsreservedPDFdisclaimerThisPDFfilemaycontainembeddedtypefaces.InaccordancewithAdobe'slicensingpolicy,thisfilemaybeprintedorviewedbutshallnotbeeditedunlessthetypefaceswhichareembeddedarelicensedtoandinstalledonthecomputerperformingtheediting.Indownloadingthisfile,partiesacceptthereintheresponsibilityofnotinfringingAdobe'slicensingpolicy.TheISOCentralSecretariatacceptsnoliabilityinthisarea.AdobeisatrademarkofAdobeSystemsIncorporated.DetailsofthesoftwareproductsusedtocreatethisPDFfilecanbefoundintheGeneralInforelativetothefile;thePDF-creationparameterswereoptimizedforprinting.EverycarehasbeentakentoensurethatthefileissuitableforusebyISOmemberbodies.Intheunlikelyeventthataproblemrelatingtoitisfound,pleaseinformtheCentralSecretariatattheaddressgivenbelow.©ISO2001Allrightsreserved.Unlessotherwisespecified,nopartofthispublicationmaybereproducedorutilizedinanyformorbyanymeans,elec-tronicormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromeitherISOattheaddressbeloworISO'smem-berbodyinthecountryoftherequester.ISOcopyrightofficeCasepostale56•CH-1211Geneva20Tel.+41227490111Fax+41227490947E-mailcopyright@iso.chWebwww.iso.chPrintedinSwitzerlandkSIST FprEN ISO 14254:2011
ISO14254:2001(E)©ISO2001–AllrightsreservediiiForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,inliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/IECDirectives,Part3.DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodiesforvoting.PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastingavote.AttentionisdrawntothepossibilitythatsomeoftheelementsofthisInternationalStandardmaybethesubjectofpatentrights.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.InternationalStandardISO14254waspreparedbyTechnicalCommitteeISO/TC190,Soilquality,SubcommitteeSC3,Chemicalmethodsandsoilcharacteristics.kSIST FprEN ISO 14254:2011
kSIST FprEN ISO 14254:2011
INTERNATIONALSTANDARDISO14254:2001(E)©ISO2001–Allrightsreserved1Soilquality—Determinationofexchangeableacidityinbariumchlorideextracts1ScopeThisInternationalStandardspecifiesamethodforthedeterminationofexchangeableacidityinbariumchlorideextractsofsoilsamplesobtainedaccordingtoISO11260.Theproceduredescribedhereinmainlyconcernsthedeterminationoftotalexchangeableaciditybymeansofafixed-pHend-pointtitration(seenote).Twooptionalproceduresarealsogiven,describingrespectively,determinationsoffreeH+acidityandofaluminiumintheextracts.ThisInternationalStandardisapplicabletoalltypesofair-drysoilsampleswhichhavebeenpretreatedinaccordancewithISO11464.NOTETitrationofexchangeableaciditybymeansofafixed-pHend-pointmaynotbespecifictoagivenacidspecies.Theend-pointpHvalueretainedis7,8,correspondingtocompleteprecipitationofAl+3ionsinsyntheticsolutions.TitrationofsoilextractstothispHmayalsoincludesomemoreweaklyionizedspeciesorweakacidorganiccompounds.2NormativereferencesThefollowingnormativedocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthisInternationalStandard.Fordatedreferences,subsequentamendmentsto,orrevisionsof,anyofthesepublicationsdonotapply.However,partiestoagreementsbasedonthisInternationalStandardareencouragedtoinvestigatethepossibilityofapplyingthemostrecenteditionsofthenormativedocumentsindicatedbelow.Forundatedreferences,thelatesteditionofthenormativedocumentreferredtoapplies.MembersofISOandIECmaintainregistersofcurrentlyvalidInternationalStandards.ISO3696,Waterforanalyticallaboratoryuse—SpecificationandtestmethodsISO11260,Soilquality—DeterminationofeffectivecationexchangecapacityandbasesaturationlevelusingbariumchloridesolutionISO11464,Soilquality—Pretreatmentofsamplesforphysico-chemicalanalysesISO11465,Soilquality—Determinationofdrymatterandwatercontentonamassbasis—Gravimetricmethod3PrincipleThesoilsampleisextractedinaccordancewithISO11260.TheextractistitratedwithaNaOHsolutionupto.Theuseofphenolphthaleinasindicatorisallowed,butshallbespecifiedinthetestreport.AnalternativemethodfordeterminationofthefreeH+acidityisproposed,inwhichsodiumfluorideisaddedtothesoilextractbeforethetitration(BaF2precipitatesbutanexcessofNaFisnotnecessary).Aluminiumionsarecomplexedandon
...
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