ISO 14435-2005 Carbonaceous materials for the production of aluminium - Petroleum coke - Determination of trace metals by inductively coupled plasma atomic emis.pdf
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1、 Reference number ISO 14435:2005(E) ISO 2005INTERNATIONAL STANDARD ISO 14435 First edition 2005-07-15 Carbonaceous materials for the production of aluminium Petroleum coke Determination of trace metals by inductively coupled plasma atomic emission spectrometry Produits carbons pour la production de
2、laluminium Coke de ptrole Dtermination des mtaux ltat de trace par spectromtrie dmission atomique avec plasma induit par haute frquence ISO 14435:2005(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but sh
3、all not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area
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5、 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 2005 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electro
6、nic 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 Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org
7、 Web www.iso.org Published in Switzerland ii ISO 2005 All rights reservedISO 14435:2005(E) ISO 2005 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope. 1 2 Normative references. 1 3 Terms and definitions. 1 4 Principle. 2 5 Interferences. 2 6 Apparatus 3 7 Reagents 4 8 Sample p
8、reparation 5 9 Preparation of apparatus . 5 10 Procedure 6 11 Calculation. 7 12 Test report. 7 13 Precision and bias for the dried test portion . 8 Bibliography . 9 ISO 14435:2005(E) iv ISO 2005 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide feder
9、ation 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 be represented on that commit
10、tee. 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. International Standards are drafted in accordanc
11、e with the rules given in the ISO/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 a
12、pproval by at least 75 % of the 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 14435 was prepared by Technical Com
13、mittee ISO/TC 226, Materials for the production of primary aluminium. ISO 14435:2005(E) ISO 2005 All rights reserved v Introduction The presence and concentration of various metallic elements in a petroleum coke are major factors in determining the suitability of the coke for various end-uses. Users
14、 of petroleum coke require a standard procedure to determine the concentrations of these metallic elements in a coke sample. This International Standard describes such a procedure. This International Standard is based on ASTM method D5600-98, published under the jurisdiction of ASTM Committee D2 on
15、Petroleum Products and Lubricants and Subcommittee DO2.05.01 on Petroleum Coke Sampling and Procedures. The repeatability and reproducibility information is based on an interlaboratory trial, which is reported in Research Report D02-1007 available from ASTM Headquarters. INTERNATIONAL STANDARD ISO 1
16、4435:2005(E) ISO 2005 All rights reserved 1 Carbonaceous materials for the production of aluminium Petroleum coke Determination of trace metals by inductively coupled plasma atomic emission spectrometry WARNING This International Standard does not purport to address all of the safety concerns, if an
17、y, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1 Scope This International Standard applies to carbonaceous materials for the production of a
18、luminium. This International Standard describes a test method which covers the analysis for commonly determined trace metals in test specimens of raw and calcined petroleum coke by inductively coupled plasma atomic emission spectroscopy. It can also be applied to other heat-treated carbonaceous mate
19、rials e.g. coal-tar pitch coke, anthracite. Elements to which this test method applies are listed in Table 1. Detection limits, sensitivity, and optimum ranges of the metals will vary with the matrices and model of spectrometer. This test method is applicable only to samples containing less than a m
20、ass fraction of 1 % ash. Elements present at concentrations above the upper limit of the working ranges can be determined with additional, appropriate dilutions. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, on
21、ly the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 6375, Carbonaceous materials for the production of aluminium Coke for electrodes Sampling ISO 3696:1987, Water for analytical laboratory use Specification and t
22、est methods ISO 3310-1, Test sieves Technical requirements and testing Part 1: Test sieves of metal wire cloth 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 petroleum coke solid, carbonaceous residue produced by thermal decomposition of hea
23、vy petroleum fractions and cracked stocks ISO 14435:2005(E) 2 ISO 2005 All rights reserved3.2 coal-tar pitch coke solid, carbonaceous residue produced by decomposition of coal-tar pitch 3.3 gross sample original, uncrushed, representative portion taken from a shipment or lot of coke 4 Principle A te
24、st sample of the petroleum coke is ashed at 700 C. The ash is fused with lithium borate. The melt is dissolved in dilute nitric acid (HNO 3 ), and the resultant solution is analyzed by inductively coupled plasma atomic emission spectrometry (ICP-AES) using simultaneous, or sequential, multi-elementa
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