EN ISO 26845-2008 en Chemical analysis of refractories - General requirements for wet chemical analysis atomic absorption spectrometry (AAS) and inductively coupled plasma atomic e.pdf

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1、BS EN ISO 26845:2008ICS 81.08NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDChemical analysis of refractories General requirements for wet chemical analysis, atomic absorption spectrometry (AAS) and inductively coupled plasma atomic emission spectrometry (ICP-A

2、ES) methods (ISO 26845:2008)0Incorporating corrigendum November 2009National forewordThis British Standard is the UK implementation of EN ISO 26845:2008. Together with BS EN ISO 21587-1:2007 and BS EN ISO 21587-3:2007, it supersedes DD ENV 955-4:1997, which is withdrawn.The UK participation in its p

3、reparation was entrusted to Technical Committee RPI/1, Refractory products and materials.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible fo

4、r its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN ISO 26845:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2009 BSI 2009Amendments/corrigenda issued since public

5、ationDate Comments 30 November 2009 Supersession details updatedISBN 978 0 580 69188 1EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 26845March 2008ICS 81.080 Supersedes ENV 955-4:1997 English VersionChemical analysis of refractories - General requirements for wetchemical analysis, atomic abs

6、orption spectrometry (AAS) andinductively coupled plasma atomic emission spectrometry (ICP-AES) methods (ISO 26845:2008)Analyse chimique des matriaux rfractaires - Exigencesgnrales pour les mthodes danalyse chimique par voiehumide, par spectromtrie dabsorption atomique (AAS) etpar spectromtrie dmiss

7、ion atomique avec plasma induitpar haute frquence (ICP-AES) (ISO 26845:2008)Chemische Analyse feuerfester Erzeugnisse - AllgemeineAnforderungen an die nasschemische Analyse,Atomabsorptionsspektrometrie-(AAS-)Verfahren undVerfahren mit induktiv gekoppeltem Plasma (ICP) (ISO26845:2008)This European St

8、andard was approved by CEN on 16 February 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concernin

9、g such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own langu

10、age and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem

11、bourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights

12、of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 26845:2008: E3 Foreword This document (EN ISO 26845:2008) has been prepared by Technical Committee ISO/TC 33 “Refractories“ in collaboration with Technical Committee CEN/TC 187 “Refractory product

13、s and materials” the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2008, and conflicting national standards shall be withdrawn at the latest by Sep

14、tember 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes ENV 955-4:1997. According to the CEN/CENELEC Int

15、ernal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, M

16、alta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 26845:2008 has been approved by CEN as a EN ISO 26845:2008 without any modification. BS EN ISO 26845:2008ISO 26845:2008(E) ISO 2009 iiiConte

17、nts Page Foreword iv Introduction v 1 Scope 1 2 Normative references 1 3 Terms and definitions .2 4 Apparatus .2 5 Reagents.6 6 Sampling.11 7 Sample mass12 8 Basic procedure.12 9 Determination of loss on ignition (gravimetric)12 10 Expression of test results.13 11 Examination and adoption of test re

18、sults .13 12 Test report 14 BS EN ISO 26845:2008ISO 26845:2008(E)iv ISO 2009 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

19、 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 cl

20、osely 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. Dr

21、aft 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 doc

22、ument may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 26845 was prepared by Technical Committee ISO/TC 33, Refractories. It is to be used in conjunction with ISO 10058-1, ISO 10058-2 and ISO 10058-3, ISO 20565-1, ISO 20565-2 a

23、nd ISO 20565-3, ISO 21079-1, ISO 21079-2 and ISO 21079-3, and ISO 21587-1, ISO 21587-2 and ISO 21587-3. BS EN ISO 26845:2008ISO 26845:2008(E) ISO 2009 vIntroduction This International Standard gives the general requirements common to the standards used for the chemical analysis of refractories and r

24、efractory products, i.e.: ISO 10058, Chemical analysis of magnesite and dolomite refractory products (alternative to the X-ray fluorescence method): Part 1: Apparatus, reagents, dissolution and gravimetric silica Part 2: Wet chemical analysis Part 3: Flame atomic absorption spectrometry (FAAS) and i

25、nductively coupled plasma emission spectrometry (ICP-AES) ISO 20565 Chemical analysis of chrome-bearing refractory products and chrome-bearing raw materials (alternative to the X-ray fluorescence method) Part 1: Apparatus, reagents, dissolution and gravimetric silica Part 2: Wet chemical analysis Pa

26、rt 3: Flame atomic absorption spectrometry (FAAS) and inductively coupled plasma emission spectrometry (ICP-AES) ISO 21079 Chemical analysis of refractories containing alumina, zirconia and silica Refractories containing 5 % to 45 % of ZrO2 (alternative to the X-ray fluorescence method) Part 1: Appa

27、ratus, reagents and dissolution Part 2: Wet chemical analysis Part 3: Flame atomic absorption spectrometry (FAAS) and inductively coupled plasma emission spectrometry (ICP-AES) ISO 21587 Chemical analysis of aluminosilicate refractory products (alternative to the X-ray fluorescence method) Part 1: A

28、pparatus, reagents, dissolution and gravimetric silica Part 2: Wet chemical analysis Part 3: Inductively coupled plasma and atomic absorption spectrometry methods These International Standards give wet chemical, AAS and ICP methods for the analysis of refractory materials and products. They are to b

29、e used as an alternative to ISO 12677, when the laboratory does not have an XRF instrument or its instrument does not meet the requirements of ISO 12677: Chemical analysis of refractory products by XRF Fused cast bead method. BS EN ISO 26845:2008ISO 26845:2008(E)BS EN ISO 26845:2008ISO 26845:2008(E)

30、INTERNATIONAL STANDARD ISO 2009 1Chemical analysis of refractories General requirements for wet chemical analysis, atomic absorption spectrometry (AAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) methods 1 Scope This International Standard specifies apparatus, reagents, sam

31、pling, sample preparation, terms and definitions, basic procedures, loss on ignition and reporting of results applicable to the following standards, which are used for the chemical analysis of refractory products and raw materials by wet chemical, AAS and ICP-AES: ISO 10058-1, ISO 10058-2 and ISO 10

32、058-3; ISO 20565-1, ISO 20565-2 and ISO 20565-3; ISO 21079-1, ISO 21079-2 and ISO 21079-3; ISO 21587-1, ISO 21587-2 and ISO 21587-3. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies.

33、 For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 31-0, Quantities and units Part 0: General principles ISO 836, Terminology for refractories ISO 3310-1, Test sieves Technical requirements and testing Part 1: Test sieves of metal wire clot

34、h ISO 5022, Shaped refractory products Sampling and acceptance testing ISO 6286, Molecular absorption spectrometry Vocabulary General Apparatus ISO 6353-1:1982, Reagents for chemical analysis Part 1: General test methods ISO 6353-2, Reagents for chemical analysis Part 2: Specifications First series

35、ISO 6353- 3, Reagents for chemical analysis Part 3: Specifications Second series ISO 6955, Analytical spectroscopic methods Flame emission, atomic absorption, and atomic fluorescence Vocabulary ISO 8656-1, Refractory products Sampling of raw materials and unshaped products Part 1: Sampling scheme BS

36、 EN ISO 26845:2008ISO 26845:2008(E)2 ISO 2009 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 836 and the following apply. 3.1 dry unshaped refractories particles and/or powder of unshaped refractories without liquid (mortar and mixture of refractory

37、 aggregate and pitch or resin) 3.2 wet unshaped refractories particles and/or powder of unshaped refractories with liquid (mortar and mixture of refractory aggregate and pitch or resin) 3.3 alumina-zirconia-silica refractories refractories in which aluminium oxide (1 % to 80 % by mass), zirconium ox

38、ide (including hafnium oxide) (5 % to 50 % by mass) and silicon(IV) oxide (0,1 % to 45 % by mass) are used as chemical components 4 Apparatus Standard laboratory apparatus and the following. 4.1 Spectrometers 4.1.1 Atomic absorption (AA) spectrometer, conforming to the requirements of ISO 6955. An i

39、nstrument which can be operated using a dinitrogen oxide/acetylene flame for the determinations of aluminium oxide and calcium oxide is appropriate. 4.1.2 Flame emission spectrophotometer, comprising a stand-alone flame emission instrument or an AA spectrometer used in emission mode. 4.1.3 Inductive

40、ly coupled plasma atomic emission (ICP-AE) spectrometer. 4.1.4 Molecular absorption spectrometer, conforming to the requirements of ISO 6286. 4.1.5 Photometer, with a 1 cm cell. 4.2 Heaters 4.2.1 Burner, such as a Mecker burner or a Bunsen burner. 4.2.2 Electric muffle furnace, suitable for use abov

41、e 1 150 C. 4.2.3 Sand bath, comprising an electrically heated or burner-heated iron plate with sand, which can be heated to the temperature at which white smoke of sulfuric acid occurs. 4.2.4 Steam bath, electric- or burner-type, which can be controlled at the appropriate temperature. 4.3 Devices 4.

42、3.1 Analytical electronic balance, readable to the nearest 0,1 mg. 4.3.2 Magnetic stirrer, comprising a stirring system using a magnetic rotating bar coated with ethylene-4-fluoride resin. BS EN ISO 26845:2008ISO 26845:2008(E) ISO 2009 34.3.3 Filter paper, ashless, medium pore. 4.3.4 Cation-exchange

43、 resin column, consisting of plastic wool (10 mm) packed into a plastic tube (diameter 12 mm 200 mm) with a funnel attached to the top and an eluent outlet sharp-pointed to the bottom. Pour a slurry (18 ml) of the water-expanded strongly acidic cation-exchange resin divinylbenzene 8 % (DVB), 75 m to

44、 150 m into the column. Adjust the flow rate to 1,0 ml to 1,5 ml per minute by the packing condition of the plastic wool. Wash the column with hydrochloric acid (1+2, 120 ml) and water (70 ml). An example of a normal column is shown in Figure 1. Dimensions in millimetres Key 1 polypropylene funnel 2

45、 cation-exchange resin 3 polypropylene wool Figure 1 Example of a cation-exchange resin column 4.4 Platinum ware The platinum apparatus may be of platinum or platinum alloy. 4.4.1 Platinum crucible, with a volume of 20 ml or 30 ml. BS EN ISO 26845:2008ISO 26845:2008(E)4 ISO 2009 4.4.2 Platinum dish,

46、 with the diameters of the base and wall almost the same, and a height of approximately half the diameter. 75 ml or 150 ml volume are commonly used sizes. 4.5 Glassware 4.5.1 Burette, with a 0,1 ml scale and a maximum volume of 50 ml. 4.5.2 Conical flask, capable of holding a volume of 500 ml and 1

47、l. 4.5.3 Desiccator, containing dried silica gel as the drying agent. 4.5.4 Erlenmeyer flask, capable of holding a volume of 500 ml. 4.5.5 Glass beakers, with a range of appropriate volumes (100 ml, 200 ml, 300 ml, 400 ml, 500 ml, etc.). 4.5.6 One-mark pipette, suitable for the transfer of each samp

48、le solution or standard solution. 4.5.7 Reflux steel head, comprising a funnel, with a long leg capable of being bent so that the end touches the inside wall of a flask (see Figure 2). Dimensions in millimetres a) Steel head b) Steel head setting Key 1 steel head 2 erlenmeyer flask 3 head that conta

49、cts internal wall Figure 2 Steel head for reflux BS EN ISO 26845:2008ISO 26845:2008(E) ISO 2009 54.5.8 Separating funnels, 250 ml and 500 ml, with stoppers. 4.5.9 Volumetric flasks, made of glassware (100 ml, 250 ml, 500 ml, 1 000 ml, etc.) as appropriate for each solution. 4.5.10 Volumetric pipette, of capacity 5 ml. 4.5.11 Watch glass, of diameter 75 mm. 4.6 Porcelain ware 4.6.1 Porcelain basin, with a diameter of 125 mm. 4.6.2 Porcelain crucible, capable of holding a vol