EN 1122-2001 en Plastics - Determination of Cadmium - Wet Decomposition Method《塑料 镉的测定 湿分解法 代替ENV 1122-1995》.pdf

《EN 1122-2001 en Plastics - Determination of Cadmium - Wet Decomposition Method《塑料 镉的测定 湿分解法 代替ENV 1122-1995》.pdf》由会员分享，可在线阅读，更多相关《EN 1122-2001 en Plastics - Determination of Cadmium - Wet Decomposition Method《塑料 镉的测定 湿分解法 代替ENV 1122-1995》.pdf（10页珍藏版）》请在麦多课文档分享上搜索。

1、STDmBSI BS EN 3322-ENGL 2003 m 1624667 0708633 554 BRITISH STANDARD Plastics - Determination of cadmium - Wet decomposition method The European Standard EN 1122:2001 has the status of a British Standard ICs 83.080.01 BS EN L122:2001 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT

2、LAW STDmBSI BS EN 1122-ENGL 2001 M 1624669 0908634 490 W BS EN 1122:2001 National foreword This British Standard is the official English language version of EN 1122:2001. It supersedes DD ENV 1122:1995 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee P

3、RI21, Plastics test methods, which has the responsibility to: - - aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developme

4、nts and promulgate them in the UK. - A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalog

5、ue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their cor

6、rect application. Compliance with a British Standard does not of itself confer immunity from legal obligations. This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes

7、into effect on 15 May 2001 Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 7 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd.No7 TGte

8、1 Comments O BSI 05-2001 ISBN O 580 37236 7 - STD.BSI BS EN 1122-ENGL 2001 Lb24bb9 0906615 327 EUROPEAN STANDARD EN 1122 NORME EUROPENNE EUROPISCHE NORM March 2001 ICs 83.080.01 Supersedes ENV 1122:1995 English version Plastics - Determination of cadmium - Wet decomposition method Plastiques - DBter

9、mination du cadmium - Mthode par dcomposition par voie humide Kunststoffe - Bestimmung von Cadmium - Nassaufschlussverfahren This European Standard was approved by CEN on 18 January 2001. CEN members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giv

10、ing this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versio

11、ns (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austna, Belgium, Czech

12、 Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMiTF,E FOR STANDARDIZATION COMITI? EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FOR NORMUNG Management Centre: rue de

13、 Stassart, 36 B-1050 Brussels Q 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 11222001 E STD.BSI ES EN lL22-ENGL 2001 m 1b24bb9 D908blb 263 m Page 2 EN 1122:2001 Foreword This European Standard has been prepared by Technical

14、 Committee CENTTC 249, Plastics, the Secretariat of which is held by IBN. 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 2001, and conflicting national standards shall be withdrawn at t

15、he latest by September 2001. This European Standard replaces ENV 1122:1995. According to the CENEENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Ger

16、many, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. O BSI 05-2001 STD-BSI BS EN 3122-ENGL 2001 3624667 0708637 LTT Page 3 EN 1122:2001 1 Scope This European Standard describes a method for the determination of the total

17、 Cadmium (Cd) content in plastics in the range of 10 mg Cd/kg to 3 O00 mg Cdlkg. It is not suitable for polyfluorinated plastic materials. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cite

18、d at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition

19、 of the publication referred to applies (including amendments). IS0 3696: 1987 Water for analytical laboratory use - Specification and test methods. IS0 38564: 1984 Paints and varnishes - Determination of “soluble“ metal content - Pari 4: Determination of cadmium content - Flame atomic absorption sp

20、ectromeffic method and polarographic method. 3 Principle Wet decomposition of organic compounds and dissolution of cadmium compounds in a sample. Atomization of a solution in the flame of an atomic absorption spectrophotometer and the measurement of the absorbance at a wavelength of 228,8 nm. 4 Reag

21、ents During the analysis, use only reagents of recognized analytical grade and only distilled water or water of equivalent purity (IS0 3696:1987). 4.1 Sulfuric acid d = 1,83 g/l 95 % (m/m). 4.2 Nitric acid d = 1,40 g/l 65 YO (mlm). 4.3 Hydrogen peroxide d = 1,lO g/l 30 % (m/m). 4.4 Cadmium metal wit

22、h a purity of 99,9 % or a commercial cadmium standard stock solution (1 g Cdll) (IS0 385641984). Cadmium standard solutions (0,5 mg Cd/l and I ,O mg Cd/l) (IS0 3856-4:1984). 4.5 5 Apparatus 5.1 Apparatus for wet decomposition (e.g. Figure I), Kjeldahl flask or any other suitable apparatus for wet de

23、composition. 5.2 Hot plate 5.3 Fume cupboard, preferably with air washing. 5.4 Flame atomic absorption spectrophotometer with background correction, e.g. D2 or Zeemann (IS0 385641984). 5.5 Hollow cathode lamp or EDL for cadmium (IS0 3856-4:19 therefore use a background correction (5.4). For the dete

24、rmination of the cadmium concentration of the test solutions and the blank solutions other suitable techniques can be used, e.g. inductively-coupled plasma (ICP) or an isotope specific method. The used technique shall be noted in the test report. 7 Expression of results The total cadmium content of

25、the sample is given by the following formula in mgikg: where: C is the cadmium concentration in milligrams per litre of the test solution obtained by 6.4; B is the cadmium concentration in milligrams per litre of the reagent blank solution obtained by 6.4; A4 is the mass, in grams of the test portio

26、n; f is the dilution factor of the test solution and the reagent blank solution used by clause 4. If the two results dont differ more than 20 % based on the average (results between 10 mg Cd/kg and 50 mg Cd/kg) or 10 % (results between 50 mg Cd/kg and 3 O00 mg Cdlkg), then take the mean. Otherwise r

27、epeat the analysis. O BSI 05-2001 STD-BSI BS EN 1122-ENGL 2001 1624669 0908621 b20 Page 7 EN 1122:2001 8 Repeatability, r: Precision Data of the Test Method The relative standard deviation between results, found on identical test material, by one operator, using the same apparatus, using the method

28、specified in this standard. Reproducibility, R: The relative standard deviation between independent results, found by two operators working in different laboratories, on identical test material, using the method specified in this standard. Range of level r* 10 mg Cd/kg to 50 mg Cdlkg 50 mg Cdlkg to

29、3 O00 mg Cd/kg 20% 10% R* 25% 25% R R* = - 100% m where: m is the average of all values for each level. The precision data were determined from an experiment conducted in 1992 involving 7 laboratories, 6 samples and 5 different plastics (PE, PP, PS, PVC and PET). The precision data only refer to the

30、 5 tested plastics. There exists a lot of experience that these data also can be used for the determination of the cadmium content of other sorts of plastics materials with the exemption of the polyfiuorated plastics. 9 TestReport The test reports shall contain at least the following information: a)

31、 type and identification of the products tested; b) a reference to this European Standard and a reference to the used method (A or B); c) the results of the test expressed as mg Cadmium/kg plastic material (mean values and single measurement results); any deviation, by agreement or otherwise, from t

32、he test procedure specified here; date of the test and name of the operator. d) e) O BSI 05-2001 STD*BSI BS EN LL22-ENGL 2001 D Lb24bb9 0908b22 567 BS EN 1122:2001 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution BSI is the independent national body responsible for prepar

33、ing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions

34、. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside

35、 front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be a

36、ddressed to Customer Services. Tel: 020 8996 9001. Fax: 020 8996 7001. Standards are also available from the BSI website at htttx/www.bsi-. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unl

37、ess otherwise requested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its p

38、roducts and services. Contact the Information Centre. Tel: 020 8996 7111. Fax: 020 8996 7048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Ad

39、ministration. Tel: 020 8996 7002. Fax: 020 8996 7001. Further information about BSI is available on the BSI website at httr,:/www.bsi-. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Exce

40、pt as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means - electronic, photocopying, recording or otherwise - without prior written permission from BSI. rhis does not preclude the free use,

41、 in the course of implementing the standard, If necessary details such as symbols, and size, type or grade designations. If these letails are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. f permission is granted, the terms may include royalty payments or a licensing greement. Details and advice can be obtained from the Copyright Manager. Fel: 020 8996 7070.