BS-EN-15490-2007 BS-2000-557-2007.pdf
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1、BRITISH STANDARD BS EN 15490:2007 BS 2000-557:2007 Ethanol as a blending component for petrol Determination of pHe The European Standard EN 15490:2007 has the status of a British Standard ICS 71.080.60 ? Licensed Copy: London South Bank University, London South Bank University, Wed Oct 17 01:21:06 G
2、MT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 15490:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2007 BSI and Energy Institute 2007 ISBN 978 0 580 56678 3 National foreword This British Standard is the UK implementation o
3、f EN 15490:2007. The UK participation in its preparation was entrusted to Technical Committee PTI/13, Petroleum testing and terminology. A list of organizations represented on this committee can be obtained on request to its secretary. Energy Institute, under the brand of IP, publishes and sells all
4、 Parts of BS 2000, and all BS EN petroleum test methods that would be Part of BS 2000, both in its annual publication “Standard methods for analysis and testing of petroleum and related products and British Standard 2000 Parts” and individually. Further information is available from: Energy Institut
5、e, 61 New Cavendish Street, London W1G 7AR. Tel: 020 7467 7100. Fax: 020 7255 1472. 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 obligat
6、ions. Amendments issued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank University, Wed Oct 17 01:21:06 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15490 August 2007 ICS 71.080.60 English Versi
7、on Ethanol as a blending component for petrol - Determination of pHe Ethanol comme base de mlange lessence - Dtermination du pHe Ethanol zur Verwendung als Blendkomponente in Ottokraftstoff - Bestimmung des pHe-Wertes This European Standard was approved by CEN on 30 June 2007. CEN members are bound
8、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
9、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 Centre has the same status
10、 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, Portugal, Romania,
11、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 any means reserved worl
12、dwide for CEN national Members. Ref. No. EN 15490:2007: E Licensed Copy: London South Bank University, London South Bank University, Wed Oct 17 01:21:06 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 15490:2007 (E) 2 Contents Page Foreword. 3 1 Scope 4 2 Normative references . 4 3 Terms and definitio
13、ns. 4 4 Principle. 4 5 Reagents and materials 4 6 Apparatus 5 7 Sampling and sample handling. 5 8 Apparatus preparation 5 9 pH meter and electrode system calibration . 5 10 Apparatus verification 6 11 Procedure 6 12 Expression of results 7 13 Precision 7 13.1 General. 7 13.2 Repeatability, r 7 13.3
14、Reproducibility, R . 7 14 Test report . 8 Annex A (informative) Background to actual fuel specification needs 9 Bibliography . 10 Licensed Copy: London South Bank University, London South Bank University, Wed Oct 17 01:21:06 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 15490:2007 (E) 3 Foreword Thi
15、s document (EN 15490:2007) has been prepared by Technical Committee CEN/TC 19 “Gaseous and liquid fuels, lubricants and related products of petroleum, synthetic and biological origin”, the secretariat of which is held by NEN. This European Standard shall be given the status of a national standard, e
16、ither by publication of an identical text or by endorsement, at the latest by February 2008, and conflicting national standards shall be withdrawn at the latest by February 2008. This document was prepared by CEN/TC 19s Ethanol Task Force and is based on an extract and translation from a French Wine
17、 Regulation 1. This method has been developed for European fuel ethanol specifications. Interlaboratory studies found that the method is not robust enough. Therefore it is better not to use it to determine the presence of any strong acids or alkalis that may be present in fuel ethanol. This Standard
18、 has insufficient precision to fulfill actual fuel specification needs (see Annex A). A test for strong acid and for the presence of alkaline substance will be developed by CEN/TC 19 to replace the pHe test method. According to the CEN/CENELEC Internal Regulations, the national standards organizatio
19、ns of the following countries 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,
20、 Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: London South Bank University, London South Bank University, Wed Oct 17 01:21:06 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 15490:2007 (E) 4 1 Scope This European Standard describes a procedure for the determination
21、 of acid strength, as a pHe value, of ethanol to be used as a blend component for gasoline. For further background on the applicability of this document, the user is referred to the information in Annex A. NOTE For the purposes of this European Standard, the term “% (V/V)” is used to represent the v
22、olume fraction. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 317
23、0, Petroleum liquids Manual sampling (ISO 3170:2004) EN ISO 3696, Water for analytical laboratory use Specification and test methods (ISO 3696:1987) 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 pHe measure of the acid strength 4 P
24、rinciple The pHe of a test portion of ethanol held at 22 C 2 C is measured using an electrode containing lithium chloride (LiCl) in an ethanol medium connected to a pH meter system. NOTE In non-aqueous media, it is not possible to carry out absolute pH measurements and a pHe value is not directly co
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