SIST EN 15616:2013

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kupfer und Kupferlegierungen - Bestimmung des Cadmiumgehaltes - Flammenatomabsorptionsspektrometrisches Verfahren (FAAS)Cuivre et alliages de cuivre - Détermination du cadmium - Méthode par spectrométrie d'absorption atomique dans la flamme (SAAF)Copper and copper alloys - Determination of cadmium content - Flame atomic absorption spectrometric method (FAAS)77.120.30Baker in bakrove zlitineCopper and copper alloysICS:Ta slovenski standard je istoveten z:EN 15616:2012SIST EN 15616:2013en,fr,de01-marec-2013SIST EN 15616:2013SLOVENSKI
STANDARDSIST-TS CEN/TS 15616:20091DGRPHãþD



SIST EN 15616:2013



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15616
November 2012 ICS 77.120.30 Supersedes CEN/TS 15616:2009English Version
Copper and copper alloys - Determination of cadmium content -Flame atomic absorption spectrometric method (FAAS)
Cuivre et alliages de cuivre - Détermination du cadmium - Méthode par spectrométrie d'absorption atomique dans la flamme (SAAF)
Kupfer und Kupferlegierungen - Bestimmung des Cadmiumgehaltes - Flammenatomabsorptionsspektrometrisches Verfahren (FAAS) This European Standard was approved by CEN on 20 October 2012.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving 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 CEN-CENELEC 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 translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
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B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15616:2012: ESIST EN 15616:2013



EN 15616:2012 (E) 2 Contents Page Foreword .31Scope .42Normative references .43Principle .44Reagents .45Apparatus .56Sampling .57Procedure .58Expression of results .89Precision . 1010Test report . 11Bibliography . 12 SIST EN 15616:2013



EN 15616:2012 (E) 3 Foreword This document (EN 15616:2012) has been prepared by Technical Committee CEN/TC 133 “Copper and copper alloys”, the secretariat of which is held by DIN. 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 May 2013, and conflicting national standards shall be withdrawn at the latest by May 2013. 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 CEN/TS 15616:2009. Within its programme of work, Technical Committee CEN/TC 133 requested CEN/TC 133/WG 10 "Methods of analysis" to revise the following document: CEN/TS 15616:2009, Copper and copper alloys — Determination of cadmium content — Flame atomic absorption spectrometric method (FAAS) In comparison with CEN/TS 15616:2009, the following significant technical changes were made: a) Conversion into a European Standard; b) Scope (Clause 1) revised; c) Principle (Clause 3) completely revised, dissolution process changed; d) Precision (Clause 9) completely revised and the results of the precision test included. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
SIST EN 15616:2013



EN 15616:2012 (E) 4 1 Scope This European Standard specifies a flame atomic absorption spectrometric method (FAAS) for the determination of the cadmium content of copper and copper alloys in the form of unwrought, wrought and cast products. The method is applicable to products having cadmium mass fractions between 0,000 5 % and 0,1 %. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable 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 1811-1, Copper and copper alloys — Selection and preparation of samples for chemical analysis — Part 1: Sampling of cast unwrought products ISO 1811-2, Copper and copper alloys — Selection and preparation of samples for chemical analysis — Part 2: Sampling of wrought products and castings 3 Principle Dissolution of a test portion in hydrochloric acid and nitric acid solution followed, after suitable dilution, by aspiration of the test solution into an air/acetylene flame of an atomic absorption spectrometer. Measurement of the absorption of the 228,8 nm line emitted by a cadmium hollow-cathode lamp. 4 Reagents During the analysis use only reagents of recognised analytical grade and only distilled water or water of equivalent purity. 4.1 Hydrochloric acid, HCl (ρ = 1,19 g/ml) 4.2 Nitric acid, HNO3 (ρ = 1,40 g/ml) 4.3 Nitric acid solution, 1 + 1 Add 500 ml of nitric acid (4.2) to 500 ml of water. 4.4 Cadmium stock solution, 1,0 g/l Cd Weigh (1 ± 0,001) g of cadmium (Cd ≥ 99,8 %) and transfer it into a 250 ml beaker. Add 10 ml of nitric acid (4.2). Cover with a watch glass and, if necessary, heat gently to assist dissolution. When dissolution is complete, allow to cool and transfer the solution quantitatively into a 1 000 ml one-mark volumetric flask, dilute to the mark with water and mix. 1 ml of this solution contains 1,0 mg of Cd. 4.5 Cadmium standard solution, 0,005 g/l Cd Transfer 2,5 ml of cadmium stock solution (4.4) into a 500 ml one-mark volumetric flask. Dilute to the mark with water and mix. Prepare this solution immediately prior to use. 1 ml of this solution contains 0,005 mg of Cd. SIST EN 15616:2013



EN 15616:2012 (E) 5 4.6 Copper base solution, 50 g/l Cu Transfer 25,0 g of cadmium-free copper (Cu ≥ 99,95 %) into a 1 000 ml beaker. Add 250 ml of hydrochloric acid (4.1) and, cautiously, 125 ml of nitric acid (4.2). Cover with a watch glass and heat gently until the copper has been completely dissolved, then heat up to the boiling point until the nitrous fumes have been expelled. Allow to cool and transfer the solution quantitatively into a 500 ml one-mark volumetric flask, dilute to the mark with water and mix. 4.7 Copper base solution, 5 g/l Cu Transfer 50,0 ml of copper base solution (4.6) into a 500 ml one-mark volumetric flask. Dilute to the mark with water and mix. 5 Apparatus 5.1 Atomic absorption spectrometer, fitted with an air/acetylene burner 5.2 Cadmium hollow-cathode lamp 6 Sampling Sampling shall be carried out in accordance with ISO 1811-1 or ISO 1811-2, as appropriate. Test samples shall be in the form of fine drillings, chips or millings, with a maximum thickness of 0,5 mm. 7 Procedure 7.1 Preparation of the test portion solution 7.1.1 General Prepare test portion solutions in accordance with 7.1.2 or 7.1.3 depending on the expected cadmium content of the test sample. 7.1.2 Cadmium mass fractions between 0,000 5 % and 0,010 % Weigh (1 ± 0,001) g of the test sample. Transfer the test portion into a 250 ml beaker. Add 10 ml of hydrochloric acid (4.1) and 10 ml of the nitric acid solution (4.3). Cover with a watch glass and heat gently until the test portion is completely dissolved and then bring to boiling point until the nitrous fumes have been expelled. Cool to room temperature, and wash the beaker cover and the sides of the beaker with water. Transfer the dissolved test portion quantitatively into a 100 ml one-mark volumetric flask. Dilute to the mark with water and mix.
NOTE The valid
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