BS ISO BRITISH STANDARD 14435:2005 Carbonaceous materials for the production of aluminium - Petroleum coke - Determination of trace metals by inductively coupled plasma atomic emission spectrometry ICS 71.100.10 BSi NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards BSISO 14435:2005 National foreword This British Standard reproduces verbatim IS014435:2005 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee CII/24, Raw materials for the aluminium industry, which has the responsibility to: aid enquirers to understand thetext; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue underthe section entitled "International Standards Correspondence Index", or by using the"Search” facility of the BSI Electronic 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 ofitself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued This British Standard was Amendments issued since publication published under the authority of the Standards Policy and Amd. No. Date Comments Strategy Committee on 30June 2006 BSI 2006 ISBN0580486303 BS IS0 14435:2005 ISO INTERNATIONAL 14435 STANDARD First edition 2005-07-15 Carbonaceous materials for the production of aluminium Petroleum cokeDeterminationoftracemetals by inductively coupled plasma atomic emission spectrometry ProduitscarbonéspourlaproductiondeI'aluminium-Cokede petroleDéterminationdesmétauxa I'etatde tracepar spectrometrie d'emissionatomiqueavecplasma induitparhautefrequence Reference number ISO 14435:2005(E) ii BSISO14435:2005 Contents Page Foreword. Introductior 1 Scope 2 Normative references 3 Terms and definitions. 4 Principle. 5 Interferences 6 Apparatus.. 7 Reagents 8 Samplepreparation..... 9 Preparation of apparatus 10 Procedure 11 Calculation. 12 Test report. 13 Precision and bias for the dried test portion Bibliography... ili BSIS014435:2005 Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies technical committees. Each member body interested in a subject for which a technical committee has been International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC 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 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 the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO14435 was prepared by Technical Committee ISO/TC226,Materials for the production of primary aluminium iv BSISO14435:2005 Introduction The presence and concentration of various metallic elements in a petroleum coke are major factors s in determining the suitability of the coke for various end-us