DD-CEN-TS-15297-2006.pdf
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1、DRAFT FOR DEVELOPMENT DD CEN/TS 15297:2006 Solid Biofuels Determination of minor elements ICS 75.160.10 ? Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 05:43:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DD CEN/TS 15297:2006 This Draft for Development was publ
2、ished under the authority of the Standards Policy and Strategy Committee on 28 April 2006 BSI 2006 ISBN 0 580 48222 7 National foreword This Draft for Development is the official English language version of CEN/TS 15297:2006. This publication is not to be regarded as a British Standard. It is being
3、issued in the Draft for Development series of publications and is of a provisional nature because the Technical Committee needs some time to collect the data in this relatively new area of technology. It should be applied on this provisional basis, so that information and experience of its practical
4、 application may be obtained. Comments arising from the use of this Draft for Development are requested so that UK experience can be reported to the European organization responsible for its conversion to a European standard. A review of this publication will be initiated 2 years after its publicati
5、on by the European organization so that a decision can be taken on its status at the end of its 3-year life. Notification of the start of the review period will be made in an announcement in the appropriate issue of Update Standards. According to the replies received by the end of the review period,
6、 the responsible BSI Committee will decide whether to support the conversion into a European standard, to extend the life of the Technical Specification or to withdraw it. Comments should be sent in writing to the Secretary of BSI Technical Committee PTI/17, Solid biofuels, at British Standards Hous
7、e, 389 Chiswick High Road, London W4 4AL, giving the document reference and clause number and proposing, where possible, an appropriate revision of the text. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards whic
8、h 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 Catalogue or of British Standards Online. This publicat
9、ion does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Summary of pages This document comprises a front cover, an inside front cover, the CEN/TS title page, pages 2 to 10, an inside back cover and a back cover. The BSI copyright
10、 notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 05:43:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI TECHNICAL SPECIFICATION
11、SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 15297 March 2006 ICS 75.160.10 English Version Solid Biofuels - Determination of minor elements Biocombustibles solides - Dtermination des lments mineurs Feste Biobrennstoffe - Bestimmung von Spurenelementen This Technical Specification (CEN/TS)
12、 was approved by CEN on 22 November 2005 for provisional application. The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted into a Euro
13、pean Standard. CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the fi
14、nal decision about the possible conversion of the CEN/TS into an EN is reached. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Nethe
15、rlands, Norway, Poland, 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 2006 CENAll rights of exploitation
16、 in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 15297:2006: E Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 05:43:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 Contents Page Foreword3 Introduction.4 1 Scope 5 2 Norm
17、ative references5 3 Terms and definitions .5 4 Symbols and abbreviations5 5 Principle6 6 Reagents.6 7 Apparatus .7 8 Preparation of the test sample.7 9 Digestion.7 10 Detection methods.8 11 Calculations8 12 Precision of the method9 13 Test Report.9 Bibliography10 CEN/TS 15297:2006 Licensed Copy: Lon
18、don South Bank University, London South Bank University, Tue Dec 12 05:43:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3 Foreword This Technical Specification (CEN/TS 15297:2006) has been prepared by Technical Committee CEN/TC 335 “Solid biofuels”, the secretariat of which is held by SIS. According
19、 to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to announce this CEN Technical Specification: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Li
20、thuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. CEN/TS 15297:2006 Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 05:43:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4
21、 Introduction The minor elements present in solid biofuels can in some cases be of environmental concern, e.g. it has been shown that certain energy crops will concentrate cadmium and in polluted areas other toxic elements may be found at elevated concentrations in the biofuels. This can be a proble
22、m if for example the ash from the combustion is to be put back in the forest as a fertilizer. Trace elements in biofuels are often present at very low concentrations requiring great care to avoid contamination in the sample preparation and decomposition steps. The typical concentrations of minor ele
23、ments in solid biofuels can be found in CEN/TS 14961. In this technical specification wet chemical methods are described. Alternative methods such as X-ray fluorescence (XRF) or direct mercury analysers may be used when validated with suitable materials (biomass reference materials) CEN/TS 15297:200
24、6 Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 05:43:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 5 1 Scope This Technical Specification is intended for determination of the minor elements Arsenic, Cadmium, Cobalt, Chromium, Copper, Mercury, Manganese, Molyb
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