1、ICS 75.160.20Liquid petroleum productsPetrolDetermination of low lead concentrations by atomic absorption spectrometryEnglish version of DIN EN 237Flssige Minerallerzeugnisse Ottokraftstoff Bestimmung von niedrigen Bleigehalten durch Atom-absorptionsspektrometrieA comma is used as the decimal marker
2、.National forewordThis standard has been prepared by CEN/TC 19 Petroleum products, lubricants and related products(Secretariat: The Netherlands).The responsible German body involved in its preparation was the Normenausschuss Materialprfung(Materials Testing Standards Committee), Technical Committee
3、Atomspektrometrie.The DIN Standards corresponding to the International Standards referred to in clause 2 of the EN are asfollows:ISO 385-1 DIN 12700-1ISO 648 DIN 12687 and DIN 12690AmendmentsThis standard differs from the February 1996 edition in that the scope has been extended to cover leadcontent
4、s from 2,5 mg/l to 10 mg/l and details of calculation have been changed.Previous editionsDIN 51769-8: 1976-11, 1981-10; DIN EN 237: 1996-02.National Annex NAStandards referred to(and not included in Normative references and Bibliography)DIN 12687 One-mark pipettes, for laboratory useDIN 12690 Class
5、A and class B one-mark bulb pipettes for laboratory useDIN 12700-1 Burettes for laboratory use General requirementsDEUTSCHE NORM December 2004DIN EN 237 No part of this standard may be reproduced without the prior permission ofDIN Deutsches Institut fr Normung e.V., Berlin. Beuth Verlag GmbH, 10772
6、Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).Normenausschuss Bauwesen (NABau) im DINEnglish price group 8www.din.dewww.beuth.de04.05 9611453Continued overleaf.Document comprises 10 pages.SupersedesFebruary 1996 edition.English versionICS 75.160.20Management Centr
7、e: rue de Stassart 36, B-1050 BrusselsEuropean Committee for StandardizationComit Europen de NormalisationEuropisches Komitee fr NormungLiquid petroleum productsPetrolDetermination of low lead concentrations by atomic absorptionspectrometry 2004. CEN All rights of exploitation in any form and by any
8、 meansreserved worldwide for CEN national members.Ref. No. EN 237 : 2004 EProduits ptroliers liquides Essence Dtermination desbasses teneurs en plomb parspectromtrie dabsorptionatomiqueFlssige Minerallerzeugnisse Ottokraftstoff Bestimmung vonniedrigen Bleigehalten durch Atom-absorptionsspektrometrie
9、This European Standard was approved by CEN on 2004-07-09.CEN members are bound to comply with the CEN/CENELEC Internal Regula-tions which stipulate the conditions for giving this European Standard the statusof a national standard without any alteration.Up-to-date lists and bibliographical references
10、 concerning such nationalstandards may be obtained on application to the Management Centre or to anyCEN member.The European Standards exist in three official versions (English, French,German). A version in any other language made by translation under the respon-sibility of a CEN member into its own
11、language and notified to theManagement Centre has the same status as the official versions.CEN members are the national standards bodies of Austria, Belgium, Cyprus,the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg,
12、 Malta, theNetherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,Switzerland, and the United Kingdom.|September 2004EN 237Supersedes EN 237 : 1996.Page 2EN 237 : 2004Page233345555566667777778Page 3EN 237 : 2004Page 4EN 237 : 2004Page 5EN 237 : 2004Page 6EN 237 : 2004Page 7EN 237 : 2004Page 8EN 237 : 2004Page 9EN 237 : 2004
