ISO-1952-2008.pdf
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1、 Reference number ISO 1952:2008(E) ISO 2008 INTERNATIONAL STANDARD ISO 1952 Second edition 2008-09-01 Solid mineral fuels Determination of extractable metals in dilute hydrochloric acid Combustibles minraux solides Dtermination des mtaux extractibles dans lacide chlorhydrique dilu Copyright Internat
2、ional Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 10/25/2008 04:46:57 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1952:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In a
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5、rinting. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2008 All rights reserved. Unless other
6、wise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright
7、 office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2008 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5
8、910770001 Not for Resale, 10/25/2008 04:46:57 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1952:2008(E) ISO 2008 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references. 1 3 Principle. 1 4 Reagents and materials . 1 5 Appar
9、atus 4 6 Preparation of the test sample 4 7 Procedure 4 8 Expression of results . 5 9 Precision 6 10 Test report . 6 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 10/25/2008 04:46:57 MDTNo reproduction or
10、 networking permitted without license from IHS -,-,- ISO 1952:2008(E) iv ISO 2008 All rights reserved 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 normall
11、y carried out through ISO technical committees. 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
12、work. ISO collaborates closely with the 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 In
13、ternational 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
14、 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. ISO 1952 was prepared by Technical Committee ISO/TC 27, Solid mineral fuels, Subcommittee SC 5, Methods of analysis. This second edition cancels and re
15、places the first edition (ISO 1952:1976), which has been technically revised. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 10/25/2008 04:46:57 MDTNo reproduction or networking permitted without license f
16、rom IHS -,-,- ISO 1952:2008(E) ISO 2008 All rights reserved v Introduction Sodium, potassium, calcium, iron and magnesium are commonly present in solid mineral fuel. They can contribute significantly to coal-utilization problems, such as boiler-tube fouling and ash disposal; they also affect product
17、 quality and gaseous emissions from combustion processes. Research indicates that the amounts of alkaline and earth-alkaline metals extractable with dilute hydrochloric acid are more closely related to the fouling/slagging properties of solid mineral fuel than are the total amounts of the metals. Co
18、pyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 10/25/2008 04:46:57 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided
19、by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 10/25/2008 04:46:57 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 1952:2008(E) ISO 2008 All rights reserved 1 Solid mineral fuels Determination of extractable metals in
20、dilute hydrochloric acid 1 Scope This International Standard describes the extraction from solid mineral fuels by dilute hydrochloric acid and determination of extractable sodium, potassium, calcium, iron and magnesium. 2 Normative references The following referenced documents are indispensable for
21、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. ISO 3696, Water for analytical laboratory use Specification and test methods ISO 5068-2, Brown coals and l
22、ignites Determination of moisture content Part 2: Indirect gravimetric method for moisture in the analysis sample ISO 5069-2, Brown coals and lignites Principles of sampling Part 2: Sample preparation for determination of moisture content and for general analysis ISO 5725-6:1994, Accuracy (trueness
23、and precision) of measurement methods and results Part 6: Use in practice of accuracy values ISO 11722, Solid mineral fuels Hard coal Determination of moisture in the general analysis test sample by drying in nitrogen ISO 13909-4, Hard coal and coke Mechanical sampling Part 4: Coal Preparation of te
24、st samples 3 Principle A portion of the sample is extracted with hot, dilute hydrochloric acid after wetting of the solid mineral fuel with alcohol. All forms of sodium, potassium, magnesium, calcium, iron that are exchangeable or extractable with the hydrochloric acid are extracted from the coal. A
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