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1、BRITISH STANDARD BS EN ISO 20847:2004 BS 2000-496: 2004 Methods of test for petroleum and its products BS 2000-496: Petroleum products Determination of sulfur content of automotive fuels Energy-dispersive X-ray fluorescence spectrometry (Identical with IP 496-2005) The European Standard EN ISO 20847
2、:2004 has the status of a British Standard ICS 75.080; 75.160.30 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:43:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 20847:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on
3、 26 April 2004 Energy Institute and BSI 26 April 2004 ISBN 0 580 43676 4 National foreword This British Standard is the official English language version of EN ISO 20847:2004. It is identical with ISO 20847:2004. The UK participation in its preparation was entrusted to Technical Committee PTI/13, Pe
4、troleum testing and terminology, which has the responsibility to: 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 parts of BS 2000, and all BS EN petroleum test methods that would be pa
5、rt 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 Institute, 61 New Cavendish Street, London W1G 7AR. Tel: 020 7467 7100. Fax: 020
6、 7255 1472. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic
7、Catalogue or of British Standards Online. 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 does not of itself confer immunity from legal obligations. aid enquirers to underst
8、and the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises
9、a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to v, a blank page, pages 1 to 11 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication
10、 Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:43:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 20847 March 2004 ICS 75.080; 75.160.30 English version Petroleum products - Determination of sulfur content of au
11、tomotive fuels - Energy-dispersive X-ray fluorescence spectrometry (ISO 20847:2004) Produits ptroliers - Dtermination de la teneur en soufre des carburants pour automobiles - Spectromtrie de fluorescence de rayons X dispersive en nergie (ISO 20847:2004) Minerallerzeugnisse - Bestimmung des Schwefelg
12、ehalts von Automobilkraftstoffen - Energiedispersive Rntgenfluoreszenz-Spektrometrie (ISO 20847:2004) This European Standard was approved by CEN on 1 March 2004. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
13、 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 Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, Germa
14、n). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmar
15、k, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPI
16、SCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 20847:2004 E Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:43:56 GMT+00:00 2006, Un
17、controlled Copy, (c) BSI I NESO 02:7482004 (E) 2 Foreword This document (EN ISO 20847:2004) has been prepared by Technical Committee ISO/TC 28 “Petroleum products and lubricants“ in collaboration with Technical Committee CEN/TC 19 “Petroleum products, lubricants and related products“, the secretaria
18、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 September 2004, and conflicting national standards shall be withdrawn at the latest by September 2004. According to the C
19、EN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembour
20、g, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 20847:2004 has been approved by CEN as EN ISO 20847:2004 without any modifications. EN ISO 20847:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun
21、 Nov 19 15:43:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 20847:2004(E) OSI 4002 INTERNATIONAL STANDARD ISO 20847 First edition 2004-03-15 Petroleum products Determination of sulfur content of automotive fuels Energy-dispersive X-ray fluorescence spectrometry Produits ptrolier
22、s Dtermination de la teneur en soufre des carburants pour automobiles Spectromtrie de fluorescence de rayons X dispersive en nergie EN ISO 20847:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:43:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:74802 O4002(E) DPlcsid Fremia ihTs PDF f
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28、S:74802 O4002(E) I SO 4002 All irthgs ersedevr iii Contents Page Forewordiv Introduction v 1 Scope1 2 Normative references .1 3 Principle.1 4 Reagents and materials2 5 Apparatus.2 6 Sampling and sample handling.3 7 Apparatus preparation3 8 Calibration4 9 Procedure.6 10 Calculation.6 11 Expression of
29、 results6 12 Precision6 13 Test report7 Annex A (informative) Interferences.8 Annex B (informative) Guidelines for measuring low sulfur contents (less than 100 mg/kg)10 Bibliography .11 EN ISO 20847:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:43:56 GMT+00:00 2006, Uncontrolled Cop
30、y, (c) BSI IS:74802 O4002(E) iv I SO 4002 All irthgs ersedevr 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 comm
31、ittees. 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
32、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 2. The main task of technical committees is to prepare International Standards. Draft Internation
33、al 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 document may be th
34、e subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 20847 was prepared by Technical Committee ISO/TC 28, Petroleum products and lubricants. EN ISO 20847:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:43:56 GMT+00:00 2006, U
35、ncontrolled Copy, (c) BSI IS:74802 O4002(E) I SO 4002 All irthgs ersedevr v Introduction This International Standard is directed specifically at the lower end of the concentration range covered in ISO 8754 (3 in the Bibliography), which covers sulfur contents from 0,01 % (m/m) up to 5,00 % (m/m). By
36、 restriction of instrument type, a better signal to background ratio for sulfur K emission is assured and by the use of matrix matched calibration standards or other means of matrix corrections (as detailed below), the precision and accuracy of results for samples having varying C:H mass ratios and
37、oxygen contents are improved. A knowledge of the general composition of the sample for analysis is advantageous in obtaining the best test result. Where matrix matching is not used and where the C:H mass ratio of the test sample is known or can be determined, accuracy may be improved by the use of t
38、he equation given in A.2.2 to correct the result to the C:H mass ratio of the calibration standards, i.e. the reference diluent oil (4.1). Some instruments include the capability for the separate measurement of scattered radiation from the X-ray tube, and notes for information are provided in A.2.3
39、on the use of this scattered radiation for compensation for matrix effects in the test sample. EN ISO 20847:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:43:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI blank EN ISO 20847:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 1
40、5:43:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTENRATIONAL TSANDADR IS:74802 O4002(E) I SO 4002 All irthgs ersedevr 1 Petroleum products Determination of sulfur content of automotive fuels Energy-dispersive X-ray fluorescence spectrometry WARNING The use of this International Standard may invo
41、lve hazardous materials, operations and equipment. This International Standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this International Standard to establish appropriate safety and health practices and determine the ap
42、plicability of regulatory limitations prior to use. 1 Scope This International Standard specifies an energy dispersive X-ray fluorescence (EDXRF) test method for the determination of the sulfur content of motor gasolines, including those containing up to 2,7 % (m/m) oxygen, and of diesel fuels, incl
43、uding those containing up to 5 % (V/V) fatty acid methyl ester (FAME), having sulfur contents in the range 30 mg/kg to 500 mg/kg. Other products may be analysed and other sulfur contents may be determined according to this test method; however, no precision data for products other than automotive fu
44、els and for results outside the specified range have been established for this International Standard. For reasons of spectral overlap, this International Standard is not applicable to leaded motor gasolines, lead-replacement gasolines containing 8 mg/kg potassium to 20 mg/kg potassium, or to produc
45、ts and feedstocks containing lead, silicon, phosporus, calcium, potassium or halides at concentrations greater than one-tenth of the concentration of sulfur measured. NOTE For the purposes of this International Standard, the terms “% (m/m)” and “% (V/V)” are used to represent the mass fraction and t
46、he volume fraction of a material, respectively. 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
47、 amendments) applies. ISO 3170:2004, Petroleum liquids Manual sampling ISO 3171:1988, Petroleum liquids Automatic pipeline sampling 3 Principle The test portion, in a cup fitted with an X-ray transparent window, is placed in a beam of exciting radiation from an X-ray tube. The intensity of the sulfu
48、r K characteristic X-radiation is measured, and the number of accumulated counts is compared with a calibration curve constructed from sulfur standards covering the range of sulfur contents under examination. NOTE The exciting radiation may be either direct, or indirect via a secondary target. EN IS
49、O 20847:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 15:43:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:74802 O4002(E) 2 I SO 4002 All irthgs ersedevr 4 Reagents and materials 4.1 Diluent oil 4.1.1 The reference diluent oil is white oil (light paraffin oil) of high purity grade, with a sulfur content of 1 mg/kg maximum. However, if only one type of ma