EN ISO 14254-2018 Soil quality - Determination of exchangeable acidity using barium chloride solution as extractant.pdf
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1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Soil quality - Determination of exchangeable acidity using barium chloride solution as extractantBS EN ISO 14254:2018National forewordThis British Standard is the UK implementation of EN ISO 14254:2018. It is identical
2、to ISO 14254:2018. It supersedes BS EN ISO 14254:2011, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee EH/4, Soil quality.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purpor
3、t to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 89403 9ICS 13.080.10Compliance with a British Standard cannot confer immunity from legal obligation
4、s.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 14254:2018EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 14254May 2018ICS 13.080.1
5、0 Supersedes EN ISO 14254:2011EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018 CEN Ref. No. EN ISO 14254:2018: EAll rights of exploitation in any form and by any means reserved worl
6、dwide for CEN national MembersSoil quality - Determination of exchangeable acidity using barium chloride solution as extractant (ISO 14254:2018)Qualit du sol - Dtermination de lacidit changeable dans des extraits au chlorure de baryum (ISO 14254:2018)Bodenbeschaffenheit - Bestimmung der Austauschaci
7、ditt unter Verwendung einer Bariumchloridlsung als Extraktionsmittel (ISO 14254:2018)This European Standard was approved by CEN on 19 March 2018.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
8、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
9、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
10、, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and Unit
11、ed Kingdom.English VersionEN ISO 14254:2018 (E)European forewordThis document (EN ISO 14254:2018) has been prepared by Technical Committee ISO/TC 190 “Soil quality“ in collaboration with Technical Committee CEN/TC 444 “Test methods for environmental characterization of solid matrices” the secretaria
12、t 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 November 2018, and conflicting national standards shall be withdrawn at the latest by November 2018.Attention is drawn to
13、the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.This document supersedes EN ISO 14254:2011.According to the CEN-CENELEC Internal Regulations, the national standards organiz
14、ations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Ma
15、lta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.Endorsement noticeThe text of ISO 14254:2018 has been approved by CEN as EN ISO 14254:2018 without any modification.iiBS EN ISO 14254:2018ISO 14254:2018Foreword
16、iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 25 Reagents 26 Apparatus and glassware 47 Samples 47.1 Sample pretreatment . 47.2 Determination of water content. 48 Procedure. 48.1 Total exchangeable acidity 49 Calculations 510 Test report . 6 ISO 2018 All rights reserved
17、 iiiContents PageBS EN ISO 14254:2018ISO 14254:2018ForewordISO (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
18、 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 Internationa
19、l Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different t
20、ypes of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not b
21、e held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is inform
22、ation given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WT
23、O) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 190, Soil quality, Subcommittee SC 3, Chemical methods and soil characteristics.This second edition cancels and replaces the first edition
24、 (ISO 14254:2001), which has been technically revised.iv ISO 2018 All rights reservedBS EN ISO 14254:2018Soil quality - Determination of exchangeable acidity using barium chloride solution as extractantWARNING Persons using this document should be familiar with normal laboratory practice. This docum
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