ISO-13312-2006.pdf
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1、 Reference number ISO 13312:2006(E) ISO 2006 INTERNATIONAL STANDARD ISO 13312 Second edition 2006-06-01 Iron ores Determination of potassium Flame atomic absorption spectrometric method Minerais de fer Dosage du potassium Mthode par spectromtrie dabsorption atomique dans la flamme Copyright Internat
2、ional Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 02:59:27 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 13312:2006(E) PDF disclaimer This PDF file may contain embedd
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5、re optimized for printing. 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. ISO 2006 All rights reserved. Unless otherwise specif
6、ied, 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 office Cas
7、e 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 2006 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standar
8、ds 1/9972545001 Not for Resale, 04/20/2007 02:59:27 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 13312:2006(E) ISO 2006 All rights reserved iii Contents Page Foreword iv 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 1 4 Principle. 1 5 Reagents 2 6 Ap
9、paratus 2 7 Sampling and samples. 4 7.1 Laboratory sample 4 7.2 Preparation of predried test samples. 4 8 Procedure 4 8.1 Number of determinations. 4 8.2 Test portion. 4 8.3 Blank test and check test. 4 8.4 Determination 5 8.4.1 Decomposition of the test portion 5 8.4.2 Treatment of the solution. 5
10、8.4.3 Preparation of the set of calibration solutions 5 8.4.4 Adjustment of atomic absorption spectrometer . 6 8.4.5 Atomic absorption measurements 6 9 Expression of results . 6 9.1 Calculation of mass fraction of potassium 6 9.2 General treatment of results 7 9.2.1 Repeatability and permissible tol
11、erance 7 9.2.2 Determination of analytical result. 7 9.2.3 Between-laboratories precision 7 9.2.4 Check for trueness . 8 9.2.5 Calculation of final result. 8 9.3 Oxide factor. 9 10 Test report . 9 Annex A (normative) Flowsheet of the procedure for the acceptance of analytical values for test samples
12、 10 Annex B (informative) Derivation of repeatability and permissible tolerance equations. 11 Annex C (informative) Precision data obtained by international analytical trials . 12 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical
13、Standards 1/9972545001 Not for Resale, 04/20/2007 02:59:27 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 13312:2006(E) iv ISO 2006 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bod
14、ies (ISO member bodies). The work of preparing International Standards is normally 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 organization
15、s, governmental and non-governmental, in liaison with ISO, also take part in the 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 I
16、SO/IEC 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
17、 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. ISO 13312 was prepared by Technical Committee ISO/TC 102, Iron ore and
18、 direct reduced iron, Subcommittee SC 2, Chemical analysis. This second edition cancels and replaces the first edition (ISO 13312:1997), which has been technically revised. It has been updated to alter the manner in which precision data are presented. Copyright International Organization for Standar
19、dization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 02:59:27 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 13312:2006(E) ISO 2006 All rights reserved 1 Iron ores Determination
20、 of potassium Flame atomic absorption spectrometric method WARNING This International Standard may involve 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 o
21、f this International Standard to establish appropriate health and safety practices and determine the applicability of regulatory limitations prior to use. 1 Scope This International Standard specifies a flame atomic absorption spectrometric method for the determination of the mass fraction of potass
22、ium in iron ores. This method is applicable to mass fractions of potassium between 0,002 5 % and 0,52 % in natural iron ores, iron ore concentrates and agglomerates, including sinter products. 2 Normative references The following referenced documents are indispensable for the application of this doc
23、ument. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 648, Laboratory glassware One-mark pipettes ISO 1042, Laboratory glassware One-mark volumetric flasks ISO 3082, Iron ores Samplin
24、g and sample preparation procedures ISO 3696, Water for analytical laboratory use Specification and test methods ISO 7764, Iron ores Preparation of predried test samples for chemical analysis ISO 11323, Iron ore and direct reduced iron Vocabulary 3 Terms and definitions For the purposes of this docu
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