ISO TS 17073-2013 Soil quality - Determination of trace elements in aqua regia and nitric acid digests - Graphite furnace atomic absorption spectrometry method .pdf
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1、 ISO 2013 Soil quality Determination of trace elements in aqua regia and nitric acid digests Graphite furnace atomic absorption spectrometry method (GFAAS) Qualit du sol Dtermination des lments en traces solubles dans leau rgale et lacide nitrique Spectromtrie dabsorption atomique avec four graphite
2、 TECHNICAL SPECIFICATION ISO/TS 17073 First edition 2013-10-15 Reference number ISO/TS 17073:2013(E) ISO/TS 17073:2013(E)ii ISO 2013 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2013 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized ot
3、herwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright offi
4、ce 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 ISO/TS 17073:2013(E) ISO 2013 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references 1 3 Principle 1 4 Inter
5、ferences and sources of errors . 2 5 Reagents 2 6 Apparatus . 4 6.1 Usual laboratory apparatus . 4 6.2 Atomic absorption spectrometer 4 6.3 Automated sample introduction system . 4 6.4 Graphite tubes . 4 6.5 Chemical modification 4 7 Procedure. 5 7.1 Graphite furnace programme . 5 7.2 Test sample so
6、lution 5 7.3 Test blank solution 6 7.4 Determination . 6 7.5 Calibration 6 8 Calculation 7 9 Expression of results 7 10 Test report . 7 Annex A (informative) Examples of instrumental parameter settings . 8 Bibliography 9 ISO/TS 17073:2013(E) Foreword ISO (the International Organization for Standardi
7、zation) 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 has the right to b
8、e 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. The procedures used
9、to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of
10、the ISO/IEC Directives, Part 2 (see www.iso.org/directives). 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. Details of any patent rights identified
11、during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on th
12、e meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this document is ISO/
13、TC 190, Soil quality, Subcommittee SC 3, Chemical methods and soil characteristics.iv ISO 2013 All rights reserved ISO/TS 17073:2013(E) Introduction ISO/TS 17073 is based upon CEN/TS 16172 Sludge, treated biowaste and soil Determination of elements using graphite furnace atomic absorption spectromet
14、ry (GF-AAS), which was developed by CEN/TC 400, Project Committee Horizontal standards in the fields of sludge, biowaste and soil. This Technical Specification is applicable and validated for several types of matrices as indicated in Table 1. Table 1 Matrices for which this Technical Specification i
15、s applicable and validated Matrix Materials used for validation Sludge Municipal sludge Biowaste Compost Fresh compost Soil Agricultural soil ISO 2013 All rights reserved v Soil quality Determination of trace elements in aqua regia and nitric acid digests Graphite furnace atomic absorption spectrome
16、try method (GFAAS) WARNING Persons using this Technical Specification should be familiar with usual laboratory practice. This Technical Specification 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
17、 safety and health practices and to ensure compliance with any national regulatory conditions. IMPORTANT It is absolutely essential that tests conducted according to this Technical Specification be carried out by suitably trained staff. 1 Scope This Technical Specification specifies the determinatio
18、n of trace elements in aqua regia or nitric acid digests or other extraction procedures of sludge, treated biowaste and soil, using atomic absorption spectrometry with electrothermal atomization in a graphite furnace. The method is applicable for the determination of the following elements: Arsenic
19、(As), cadmium (Cd), cobalt (Co), lead (Pb), antimony (Sb), thallium (Tl), vanadium (V). This method may be applied to other elements. The lower working range is approximately 0,01 mg/kg to 0,001 mg/kg, depending on the element to be determined. 2 Normative references The following documents, in whol
20、e or in part, are normatively referenced in this document and are indispensable for its application. 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 laborato
21、ry use Specification and test methods ISO 11466, Soil quality Extraction of trace elements soluble in aqua regia ISO 16729, Soil quality Digestion of nitric acid soluble fractions of elements ISO 16965, Soil quality Determination of trace elements using inductively coupled plasma mass spectrometry (
22、ICP-MS) 3 Principle Graphite furnace atomic absorption spectrometry (GFAAS) (also known as Electrothermal Atomic Absorption Spectrometry (ETAAS), discrete sample aliquots are dispensed into a graphite tube (of which there are several types), which can be heated to over 2 500 C very rapidly and in a
23、controlled manner. By increasing the temperature stepwise, the processes of drying, thermal decomposition of the matrix and thermal dissociation into free atoms occurs. Atomic absorption spectrometry is based on the ability of free atoms to absorb light. A light source emits light specific for a cer
24、tain element (or elements). When the light beam passes through the atom cloud in the heated graphite furnace, the light is selectively absorbed by atoms of the chosen element(s). The decrease in light intensity is measured with a detector at a specific wavelength. The concentration of an element in
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