ISO-11047-1998.pdf
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1、A Reference number ISO 11047:1998(E) INTERNATIONAL STANDARD ISO 11047 First edition 1998-05-01 Soil quality Determination of cadmium, chromium, cobalt, copper, lead, manganese, nickel and zinc in aqua regia extracts of soil Flame and electrothermal atomic absorption spectrometric methods Qualit du s
2、ol Dosage du cadmium, chrome, cobalt, cuivre, plomb, manganse, nickel et zinc dans les extraits de sol leau rgale Mthodes par spectromtrie dabsorption atomique avec flamme et atomisation lectrothermique Copyright International Organization for Standardization Provided by IHS under license with ISO L
3、icensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 00:37:13 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 11047:1998(E) ISO 1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any for
4、m or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case postale 56 CH-1211 Genve 20 Switzerland Internetcentraliso.ch X.400c=ch; a=400net; p=iso; o=isocs; s=central Printe
5、d in Switzerland ii ContentsPage 1Scope 1 2Normative references .2 3Method A Determination of cadmium, chromium, cobalt, copper, lead, manganese, nickel and zinc by flame atomic absorption spectrometry2 3.1Principle 2 3.2Reagents.3 3.3Preparation of stock and standard solutions of individual element
6、s4 3.4Apparatus6 3.5Procedure .6 3.6Determination of test portion.9 3.7Calculation 9 3.8Precision .10 3.9Expression of results.10 3.10 Test report.10 4Method B Determination of cadmium, chromium, cobalt, copper, lead, manganese, nickel and zinc by electrothermal atomic absorption spectrometry 10 4.1
7、Principle 10 4.2Reagents.11 4.3Stock and standard solutions11 4.4Apparatus13 4.5Procedure .13 4.6Calibration and determination.15 4.7Plotting the graph15 4.8Calculation 15 4.9Expression of results.16 4.10 Precision .16 4.11 Test report.16 Annex A Results of interlaboratory tests17 Copyright Internat
8、ional Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 00:37:13 MDTNo reproduction or networking permitted without license from IHS -,-,- ISOISO 11047:1998(E) iii Foreword ISO (the International Organiza
9、tion for Standardization) is a worldwide federation of national standards bodies (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
10、has the right to be represented on that committee. International organizations, 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. D
11、raft 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. International Standard ISO 11047 was prepared by Technical Committee ISO/T
12、C 190, Soil quality, Subcommittee SC 3, Chemical methods and soil characteristics. Annex A of this International Standard is for information only. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Re
13、sale, 04/19/2007 00:37:13 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, 04/19/2007 00:37:13 MDTNo reproduction or
14、 networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISOISO 11047:1998(E) 1 Soil quality Determination of cadmium, chromium, cobalt, copper, lead, manganese, nickel and zinc in aqua regia extracts of soil Flame and electrothermal atomic absorption spectrometric methods WARNING
15、 The procedures in this International Standard should be carried out by competent, trained persons. Some of the techniques and reagents, including the use of equipment, are potentially very dangerous. Users of this International Standard who are not thoroughly familiar with the potential dangers and
16、 related safe practices should take professional advice BEFORE commencing any operation. 1 Scope This International Standard specifies two methods for the determination, by atomic absorption spectrometry, of one or more of cadmium, chromium, cobalt, copper, lead, manganese, nickel and zinc, in aqua
17、regia extracts of soil obtained in accordance with ISO 11466. The choice of method for any element depends on the amount of that element expected to be in a sample, and both methods might be needed to cover all the elements in one sample. The methods are applicable when the extractable element conte
18、nt is above or below the amount given in table 1 (as milligrams per kilogram, dry matter), as appropriate. The two methods are described separately as follows: Method A Determination of cadmium, chromium, cobalt, copper, lead, manganese, nickel and zinc by flame atomic absorption spectrometry. Metho
19、d B Determination of cadmium, chromium, cobalt, copper, lead, manganese, nickel and zinc by electrothermal atomic absorption spectrometry. Many of the procedures and reagents are common to both methods, and to the different elements within each method. Users are advised, however, to read the whole s
20、tandard carefully before embarking on any of the procedures. Table 1 Indicative limits of soil contents (mg/kg dry matter) for elements extractable in aqua regia in accordance with ISO 11446 ElementMethod A (flame AAS) Method B (electrothermal AAS) Cadmium 2 12 12 5 15 2 12 2 2 Copyright Internation
21、al Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 00:37:13 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 11047:1998(E) ISO 2 NOTE 1Indicative limits given in table 1 are
22、 appropriate to the equipment and techniques avaiable at the time of publication of this International Standard. Technical improvements may change this position in the future. NOTE 2This International Standard refers specifically to the use of atomic absorption spectrometry. Users of this Internatio
23、nal Standard are advised to operate their laboratories to accepted quality control procedures. Certified Reference Materials (CRM) should be used to establish the amounts of the relevant elements in in-house reference materials. The latter can be used for routine quality control of the procedures gi
24、ven in this International Standard. Results should be established with control charts, for each element, within the laboratory. No result should be accepted which falls outside an agreed limit. Quality control procedures based on a widely accepted statistical technique should be used to establish su
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