ISO TS 18806-2014 Solid mineral fuels - Determination of Chlorine content《固体矿物燃料 氯含量的测定》.pdf
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1、 ISO 2014 Solid mineral fuels Determination of Chlorine content Combustibles minraux solides Dosage de la teneur en chlore TECHNICAL SPECIFICATION ISO/TS 18806 Reference number ISO/TS 18806:2014(E) First edition 2014-12-15 ISO/TS 18806:2014(E)ii ISO 2014 All rights reserved COPYRIGHT PROTECTED DOCUM
2、ENT ISO 2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise 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
3、 be requested 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 ISO/TS 18806:2014(E)Contents Pa
4、ge Foreword iv 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 Principle 1 4.1 Method A High temperature combustion in oxygen . 1 4.2 Method B Bomb combustion . 1 5 Reagent . 2 5.1 Method A 2 5.2 Method B 2 6 Apparatus . 2 6.1 Method A 2 6.2 Method B 4 7 Preparation of sample 4 8
5、 Procedure. 5 8.1 Blank Value Determination 5 8.2 Method A 5 8.3 Method B Bomb Combustion. 5 9 Determination of dissolved chloride . 6 9.1 General . 6 9.2 Determination by ion chromatography . 6 10 Calculation and expression of results . 7 11 Test report . 7 Annex A (normative) Quality control . 8 A
6、nnex B (Informative)Results of the German Interlaboratory comparison 2009 for DIN 51727:2011 “Solid fuels-Determination of the chlorine content” 9 Bibliography .11 ISO 2014 All rights reserved iii ISO/TS 18806:2014(E) Foreword ISO (the International Organization for Standardization) is a worldwide f
7、ederation 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 co
8、mmittee. 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 to develop this document
9、 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 the ISO/IEC Directives,
10、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 during the development o
11、f 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 the meaning of ISO specifi
12、c 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/TC 27, Solid mineral fue
13、ls, Subcommittee SC 5, Methods of Analysis.iv ISO 2014 All rights reserved Solid mineral fuels Determination of Chlorine content 1 Scope This Technical Specification specifies two methods (high temperature combustion and bomb combustion) for the determination of chlorine in solid mineral fuels. It i
14、s applicable to hard coals, brown coals, coke, and tailings. The chlorine in the digestion solution can be determined using different methods, e.g. an ion-selective electrode, coulometric or potentiometric titration, spectrophotometry, or ion chromatography. In this Technical Specification, the ion
15、chromatographic separation with conductivity detection is described. The method is applicable to determine the chlorine content higher than 0,005 per cent mass fraction. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispens
16、able 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 687, Solid mineral fuels Coke Determination of moisture in the general analysis test sample ISO 1170, Coal and
17、 coke Calculation of analyses to different bases ISO 1213-2, Solid mineral fuels Vocabulary Part 2: Terms relating to sampling, testing and analysis ISO 5068-2, Brown coals and lignites Determination of moisture content Part 2: Indirect gravimetric method for moisture in the analysis sample ISO 5725
18、-2, Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method ISO 11722, Solid mineral fuels Hard coal Determination of moisture in the general analysis test sample by drying i
19、n nitrogen EN ISO 10304-1, Water quality Determination of dissolved anions by liquid chromatography of ions Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate 3 T erms a nd definiti ons For the purposes of this document, the terms and definitions given in I
20、SO 1213-2 apply. 4 Principle 4.1 Method A High temperature combustion in oxygen The sample is combusted at high temperature in an oxygen atmosphere. The gaseous combustion products including the formed chloride are collected in a trap filled with water, in which they are dissolved. 4.2 Method B Bomb
21、 combustion The sample is combusted in a high pressure bomb in an oxygen atmosphere. The formed chloride is collected in an absorption solution inside the bomb. TECHNICAL SPECIFICATION ISO/TS 18806:2014(E) ISO 2014 All rights reserved 1 ISO/TS 18806:2014(E) 5 Reagent 5.1 Method A 5.1.1 Oxygen, pure,
22、 with an assay of at least 99,5 % volume fraction. 5.1.2 Combustion aid (optional), spectroscopic carbon or iron phosphate (FePO 4 ). 5.2 Method B 5.2.1 Oxygen, pure, with an assay of at least 99,5 % volume fraction. 5.2.2 Combustion aid (optional), paraffin, benzoic acid, polyethylene combustion ba
23、gs, acetobutyrate capsules, or other suitable materials. 5.2.3 Fuse, ignition wire (e.g. platinum) and cotton fuse (optional). Note A possible contribution of the cotton fuse to the chlorine content should be considered. 5.2.4 Absorption solution, either eluent used for ion chromatographic determina
24、tion, or alkaline solution (e.g. 0,2 mol/l KOH or 0,1 mol/l NaOH), or deionised water. 6 Apparatus 6.1 Method A 6.1.1 Fused silica combustion tube, absorber , and headpiece, the sintered glass discs in the absorber and the headpiece shall have a pore size of 90 m to 150 m (see Figure 1).2 ISO 2014 A
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