BS-EN-ISO-21078-2-2007.pdf
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1、BRITISH STANDARD BS EN ISO 21078-2:2007 Determination of boron(III) oxide in refractory products Part 2: Acid extraction method for the determination of boron(III) oxide in binder components The European Standard EN ISO 21078-2:2007 has the status of a British Standard ICS 81.040.01; 81.060.01 ? Lic
2、ensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:51:46 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN ISO 21078-2:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2007 BSI 2007 ISBN 978 0
3、580 57877 9 National foreword This British Standard is the UK implementation of EN ISO 21078-2:2007. It is identical to ISO 21078-2:2006. The UK participation in its preparation was entrusted to Technical Committee RPI/1, Refractory products and materials. A list of organizations represented on this
4、 committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued sinc
5、e publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:51:46 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 21078-2 October 2007 ICS 81.060.01; 81.040.01 English Version Determi
6、nation of boron(III) oxide in refractory products - Part 2: Acid extraction method for the determination of boron(III) oxide in binder components (ISO 21078-2:2006) Dosage de loxyde de bore(III) dans les produits rfractaires - Partie 2: Mthode dextraction acide pour le dosage de loxyde de bore(III)
7、dans les composants de liant (ISO 21078-2:2006) Bestimmung des Gehaltes an Bor(III)-oxid in feuerfesten Erzeugnissen - Teil 2: Sureextraktionsverfahren zur Bestimmung des Bor(III)-oxid-Gehaltes in Binderkomponenten (ISO 21078-2:2006) This European Standard was approved by CEN on 16 September 2007. C
8、EN 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 ap
9、plication to the CEN 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 Management Centr
10、e has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland
11、, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CENAll rights of exploitation in any form and by an
12、y means reserved worldwide for CEN national Members. Ref. No. EN ISO 21078-2:2007: E Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:51:46 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Foreword The text of ISO 21078-2:2006 has been prepared by Technical Committe
13、e ISO/TC 33 “Refractories” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 21078-2:2007 by Technical Committee CEN/TC 187 “Refractory products and materials“, the secretariat of which is held by BSI. This European Standard shall be given the status of a
14、national standard, either by publication of an identical text or by endorsement, at the latest by April 2008, and conflicting national standards shall be withdrawn at the latest by April 2008. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following co
15、untries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, S
16、pain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 21078-2:2006 has been approved by CEN as EN ISO 21078-2:2007 without any modifications. EN ISO 21078-2:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:51:46 GMT+00:00 2007,
17、Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARD ISO 21078-2 First edition 2006-12-01 Reference number ISO 21078-2:2006(E) Determination of boron(III) oxide in refractory products Part 2: Acid extraction method for the determination of boron(III) oxide in binder components Dosage de loxyde de bore(
18、III) dans les produits rfractaires Partie 2: Mthode dextraction acide pour le dosage de loxyde de bore(III) dans les composants de liant EN ISO 21078-2:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:51:46 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ii Li
19、censed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:51:46 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iii Contents Page 1Scope 1 2Normative references 1 3Terms and definitions 1 4Preparation of the test sample . 1 5Reagents . 2 6Mass of test portion for extraction .
20、 2 7Preparation of the test solution 2 8Blank solution 3 9Classification of determination methods 3 10Determination of boron(III) oxide by sodium hydroxide titrimetry 3 11Determination of boron(III) oxide by inductived coupled plasma/atomic emission spectrometry 5 12Curcumine absorption spectrophoto
21、metry (Rothocyanine method) 6 13Quality assurance and control . 9 14Expression of test results 9 15Test report 10 EN ISO 21078-2:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:51:46 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iv Foreword ISO (the Interna
22、tional 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 be
23、en 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 stan
24、dardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies fo
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