BS-ISO-6101-5-2006.pdf
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1、BRITISH STANDARD BS ISO 6101-5:2006 Rubber Determination of metal content by atomic absorption spectrometry Part 5: Determination of iron content ICS 83.060 ? Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:03:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 6101-5:2006 This British St
2、andard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2006 BSI 2006 ISBN 0 580 49634 1 National foreword This British Standard was published by BSI. It is the UK implementation of ISO 6101-5:2006. It supersedes BS 7164-27.1:1991 which is withdrawn. Th
3、e UK participation in its preparation was entrusted to Technical Committee PRI/23, Test methods for rubber and non-black compounding ingredients. A list of organizations represented on PRI/23 can be obtained on request to its secretary. This publication does not purport to include all the necessary
4、provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:03:20 GMT+00:00 2006, Unc
5、ontrolled Copy, (c) BSI INTERNATIONAL STANDARD ISO 6101-5 Second edition 2006-10-01 Reference number ISO 6101-5:2006(E) Rubber Determination of metal content by atomic absorption spectrometry Part 5: Determination of iron content Caoutchouc Dosage du mtal par spectromtrie dabsorption atomique Partie
6、 5: Dosage du fer BS ISO 6101-5:2006 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:03:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:03:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii Contents Page 1Scope 1 2Normative referenc
7、es 1 3Principle 1 4Reagents . 1 5Apparatus . 2 6Sampling . 3 7Procedure . 3 7.1Preparation of test portion . 3 7.2Preparation of test solution 3 7.3Preparation of the calibration curves 4 7.4Determination 5 8Expression of results 5 9Test report 6 BS ISO 6101-5:2006 Licensed Copy: sheffieldun sheffie
8、ldun, na, Mon Nov 27 08:03:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization 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
9、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-governmental, in liaison with ISO, also take part in the work. ISO collaborates clo
10、sely 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 2. The main task of technical committees is to prepare International Standards. Dra
11、ft 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 docu
12、ment may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 6101-5 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 2, Testing and analysis. This second edition cancels and replaces the first
13、 edition (ISO 6101-5:1990), which has been revised to update the normative references. ISO 6101 consists of the following parts, under the general title Rubber Determination of metal content by atomic absorption spectrometry: Part 1: Determination of zinc content Part 2: Determination of lead conten
14、t Part 3: Determination of copper content Part 4: Determination of manganese content Part 5: Determination of iron content BS ISO 6101-5:2006 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:03:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 1 Rubber Determination of metal content by atomic a
15、bsorption spectrometry Part 5: Determination of iron content 1Scope This part of ISO 6101 specifies an atomic absorption spectrometric method for the determination of the iron content of rubbers. It is applicable to raw rubber, rubber products and latex having iron contents of to . Higher concentrat
16、ions may be determined, provided that suitable adjustments are made to the mass of the test portion and/or the concentrations of the solution used. 2Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition
17、cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 123, Rubber latex Sampling ISO 247:2006, Rubber Determination of ash ISO 648:1977, Laboratory glassware One-mark pipettes ISO 1042:1998, Laboratory glassware One-mark volumetr
18、ic flasks ISO 1795, Rubber, raw natural and raw synthetic Sampling and further preparative procedures 3Principle A test portion is ashed at in accordance with ISO 247:2006, method A or B. The ash is dissolved in hydrochloric acid and if any silicates are present they are decomposed with a mixture of
19、 sulfuric acid and hydrofluoric acid to remove them. The solution obtained is aspirated into an atomic absorption spectrometer and the absorption is measured at a wavelength of for concentrations up to or (by mass), or for concentrations of to or (by mass) to (by mass). NOTEISO 6955, Analytical spec
20、troscopic methods Flame emission, atomic absorption, and atomic fluorescence Vocabulary, defines the spectrometric terms used in this part of ISO 6101. 4Reagents During the analysis, unless otherwise stated, use only reagents of recognized analytical grade, and only distilled water or water of equiv
21、alent purity. 5,0 mg/kg1 000 mg/kg 550 C 25 C 248,3 nm10 mg/kg0,001 %372,0 nm 10 mg/kg1 000 mg/kg0,001 %0,1 % BS ISO 6101-5:2006 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:03:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 4.1Sulfuric acid, . 4.2Hydrochloric acid, . 4.3Hydrochloric ac
22、id, dilute, (by volume). Dilute 1 volume of concentrated hydrochloric acid (4.2) with 3 volumes of water. 4.4Hydrofluoric acid, to (by mass). 4.5Nitric acid, . 4.6Iron, standard solution corresponding to of Fe per cubic decimetre. Use either commercially available standard iron solutions, or prepare
23、 as follows: Grind metallic iron, purity greater than (by mass). Weigh to the nearest in a conical flask (5.11) and dissolve it in a mixture of of hydrochloric acid (4.3) and of nitric acid (4.5). Transfer it to a one-mark volumetric flask (5.4), dilute to the mark with hydrochloric acid (4.3) and m
24、ix thoroughly. of this standard solution contains of Fe. 5Apparatus Use ordinary laboratory apparatus and the following, ensuring that all apparatus and laboratory implements are non-ferrous: 5.1Balance, accurate to . 5.2Muffle furnace, capable of being maintained at . 5.3Beaker, of capacity . 5.4On
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