ISO-10378-2005.pdf
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1、 Reference number ISO 10378:2005(E) ISO 2005 INTERNATIONAL STANDARD ISO 10378 Second edition 2005-07-01 Copper, lead and zinc sulfide concentrates Determination of gold and silver Fire assay gravimetric and flame atomic absorption spectrometric method Concentrs sulfurs de cuivre, de plomb et de zinc
2、 Dosage de lor et de largent Mthode gravimtrique par essai au feu et spectromtrie dabsorption atomique dans la flamme Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/05/2007 05:25:
3、08 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 10378:2005(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded a
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6、lating to it is found, please inform the Central Secretariat at the address given below. ISO 2005 All rights reserved. Unless otherwise 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, wi
7、thout permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright 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 2005 All r
8、ights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/05/2007 05:25:08 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 10378:2005(E) ISO 2005
9、 All rights reserved iii Contents Page Foreword. v Introduction. vi 1 Scope . 1 2 Normative references. 1 3 Principle. 2 3.1 Fusion 2 3.2 Cupellation 2 3.3 Parting 2 3.4 Retreatment. 2 3.5 Correction for blank contamination 2 4 Reagents 2 5 Apparatus 4 6 Sample . 5 6.1 Test sample . 5 6.2 Test porti
10、on. 5 7 Procedure 5 7.1 Number of determinations. 5 7.2 Trial fusion. 5 7.3 Blank tests. 5 7.4 Charge preparation. 6 7.5 Primary fusion. 7 7.6 Cupellation 7 7.7 Retreatment of residues. 8 7.8 Determination of gold in the primary bead 8 7.9 Determination of gold and silver in secondary beads and blan
11、ks, and of silver in prills. 9 7.10 Determination of silver in the parting solution 11 8 Expression of results . 11 8.1 Mass fraction of gold 11 8.2 Mass fraction of silver 12 9 Precision 13 9.1 Expression of precision. 13 9.2 Method for obtaining the final result (see Annex H). 14 9.3 Precision bet
12、ween laboratories. 15 9.4 Check of trueness. 17 9.4.1 General. 17 9.4.2 Type of certified reference material (CRM) or reference material (RM) 17 10 Test report . 18 Annex A (normative) Procedure for the preparation and determination of the mass of a predried test portion 19 Annex B (normative) Trial
13、 fusion 21 Annex C (normative) Blank determination 22 Annex D (normative) Inquartation 23 Annex E (normative) Determination of vaporization loss of silver during the cupellation process . 24 Annex F (normative) Sulfuric acid - Parting 25 Copyright International Organization for Standardization Provi
14、ded by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/05/2007 05:25:08 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 10378:2005(E) iv ISO 2005 All rights reserved Annex G (normative) Determination of impurities in pa
15、rting solutions and washings.27 Annex H (normative) Flowsheet of the procedure for the acceptance of analytical values for test samples (see 9.2) 31 Annex I (informative) Flowsheet of the method.32 Annex J (informative) Roasting method.33 Annex K (informative) Guide to the preparation of dilutions f
16、or the determination of silver in parting solutions and residues34 Annex L (informative) Derivation of precision equations.35 Bibliography .52 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for
17、Resale, 04/05/2007 05:25:08 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 10378:2005(E) ISO 2005 All rights reserved v Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The wor
18、k 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 organizations, governmental and non-governme
19、ntal, 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 ISO/IEC Directives, Part 2. The m
20、ain 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. A
21、ttention 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 10378 was prepared by Technical Committee ISO/TC 183, Copper, lead, zinc and nickel ores and conce
22、ntrates. This second edition cancels and replaces the first edition (ISO 10378:1994), which has been technically revised. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/05/2007 05
23、:25:08 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 10378:2005(E) vi ISO 2005 All rights reserved Introduction This International Standard describes a method for the determination of the mass fraction of gold and silver in copper, lead and zinc sulfide concentrates.
24、This International Standard was prepared to enable laboratories to determine the mass fraction of gold and silver in suitable samples using instrumental methods. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wi
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