ISO-14403-2002.pdf
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1、INTERNATIONAL STANDARD ISO 14403 First edition 2002-03-01 Reference number ISO 14403:2002(E) ISO 2002 Water quality Determination of total cyanide and free cyanide by continuous flow analysis Qualit de leau Dosage des cyanures totaux et des cyanures libres par analyse en flux continu Copyright Inter
2、national Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 20:29:55 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 14403:2002(E) ii ISO 2002 All rights reserved PDF disclaim
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5、ile; the PDF-creation parameters were 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 2002 All right
6、s 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, without permission in writing from either ISO at the address below or ISOs member body in the country of the
7、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.ch Web www.iso.ch Printed in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standard
8、s 1/9972545001 Not for Resale, 04/18/2007 20:29:55 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 14403:2002(E) ISO 2002 All rights reserved iii Contents Page 1Scope . 1 2Normative references . 1 3Terms and definitions 1 4Interferences . 2 5Principle 2 6Reagents 3 7App
9、aratus . 5 8Sampling and sample preparation 9 9Procedure . 10 10Calculation 12 11Precision and accuracy 13 12Test report 13 Annexes ADetermination of the actual cyanide concentration in potassium cyanide stock solution 14 BExample for the determination of total cyanide and free cyanide by continuous
10、 flow analysis (CFA) with gas diffusion and amperometric detection. 15 CResults of the interlaboratory trial for cyanide determination 17 Bibliography. 18 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 No
11、t for Resale, 04/18/2007 20:29:55 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 14403:2002(E) iv ISO 2002 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies).
12、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 organizations, governmental and non-g
13、overnmental, 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 3
14、. 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
15、 International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 14403 was prepared by Technical Committee ISO/TC 147, Water quality, Subcommittee SC 2, Physical, chemical, biochemical methods. An
16、nex A forms a normative part of this International Standard. Annexes B and C are for information only. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 20:29:55 MDTNo reproduction
17、 or networking permitted without license from IHS -,-,- ISO 14403:2002(E) ISO 2002 All rights reserved v Introduction Methods using flow analysis automate wet chemical procedures and are particularly suitable for the processing of many analytes in water in large sample series at a high analysis freq
18、uency. Analysis can be performed by flow injection analysis (FIA) or continuous flow analysis (CFA). In this International Standard the latter is specified. The CFA method shares the feature of an automatic dosage of the sample into a flow system (manifold) where the analytes in the sample react wit
19、h the reagent solutions on their way through the manifold. The sample preparation may be integrated in the manifold. The reaction product is measured in a flow detector (e.g. flow photometer). It is absolutely essential that the test described in this International Standard be carried out by suitabl
20、e qualified staff. It should be investigated whether and to what extend particular problems will require the specification of additional marginal conditions. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001
21、 Not for Resale, 04/18/2007 20:29:55 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 20:29:55 MDTNo repr
22、oduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARDISO 14403:2002(E) ISO 2002 All rights reserved 1 Water quality Determination of total cyanide and free cyanide by continuous flow analysis WARNING Persons using this International Standard should be familiar with n
23、ormal laboratory practice. This International Standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions.
24、1Scope This International Standard specifies methods for the determination of cyanide in various types of water (such as ground, drinking, surface, leachate and waste water) with cyanide concentrations usually above expressed as cyanide ions. The CFA method is applicable to a mass concentration rang
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