SIST EN 15025:2010
(Main)Copper and copper alloys - Determination of magnesium content - Flame atomic absorption spectrometric method (FAAS)
Copper and copper alloys - Determination of magnesium content - Flame atomic absorption spectrometric method (FAAS)
This European Standard specifies a flame atomic absorption spectrometric method (FAAS) for the determination of magnesium content of copper and copper alloys in the form of unwrought, wrought and cast products. The method is applicable to products having magnesium mass fractions between 0,001 % and 0,20 %.
Kupfer und Kupferlegierungen - Bestimmung des Magnesiumgehaltes - Flammenatomabsorptionsspektrometrisches Verfahren (FAAS)
Diese Europäische Norm legt ein flammenatomabsorptionsspektrometrisches Verfahren (FAAS) für die Be-stimmung des Magnesiumgehaltes in Kupfer und Kupferlegierungen fest, die als Gussstücke oder als plas-tisch oder nichtplastisch geformte Produkte vorliegen.
Das Verfahren ist geeignet für Produkte mit Magnesium-Massenanteilen zwischen 0,001 % und 0,20 %.
Cuivre et alliages de cuivre - Dosage du magnésium - Méthode par spectrométrie d'absorption atomique dans la flamme (SAAF)
La présente Norme européenne spécifie une méthode par spectrométrie d’absorption atomique dans la
flamme (SAAF) pour la détermination du magnésium dans le cuivre et les alliages de cuivre sous forme de
produits non corroyés, corroyés et moulés.
La méthode est applicable aux produits ayant des teneurs en magnésium comprises entre 0,001 % et 0,20 %.
Baker in bakrove zlitine - Določevanje magnezija - Metoda s plamensko atomsko absorpcijsko spektrometrijo (FAAS)
Ta evropski standard določa metodo z uporabo spektrometrije s plamensko atomsko absorpcijo (FAAS) za določevanje magnezija v bakru in bakrovih zlitinah v obliki negnetenih, gnetenih in ulitih polizdelkov. Metoda velja za polizdelke z masnim deležem magnezija med 0,001 % in 0,20 %.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kupfer und Kupferlegierungen - Bestimmung des Magnesiumgehaltes - Flammenatomabsorptionsspektrometrisches Verfahren (FAAS)Cuivre et alliages de cuivre - Dosage du magnésium - Méthode par spectrométrie d'absorption atomique dans la flamme (SAAF)Copper and copper alloys - Determination of magnesium content - Flame atomic absorption spectrometric method (FAAS)77.120.30Baker in bakrove zlitineCopper and copper alloysICS:Ta slovenski standard je istoveten z:EN 15025:2010SIST EN 15025:2010en,de01-oktober-2010SIST EN 15025:2010SLOVENSKI
STANDARDSIST-TS CEN/TS 15025:20071DGRPHãþD
SIST EN 15025:2010
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15025
July 2010 ICS 77.120.30 Supersedes CEN/TS 15025:2006English Version
Copper and copper alloys -Determination of magnesium content - Flame atomic absorption spectrometric method (FAAS)
Cuivre et alliages de cuivre -Détermination du magnésium - Méthode par spectrométrie d'absorption atomique dans la flamme (SAAF)
Kupfer und Kupferlegierungen - Bestimmung des Magnesiumgehaltes - Flammenatomabsorptionsspektrometrisches Verfahren (FAAS) This European Standard was approved by CEN on 19 June 2010.
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 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 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15025:2010: ESIST EN 15025:2010
EN 15025:2010 (E) 2 Contents Page Foreword .31Scope .42Normative references .43Principle .44Reagents .45Apparatus .56Sampling .57Procedure .57.1Preparation of the test portion solution .57.1.1Test portion .57.1.2Test portion solution .57.2Blank test .67.3Check test .67.4Preparation of the calibration curve .67.4.1Preparation of the calibration solutions .67.4.2Adjustment of the atomic absorption spectrometer .77.4.3Spectrometric measurement of the calibration solutions .87.4.4Calibration curve.87.5Determination .87.5.1General .87.5.2Preliminary spectrometric measurement .87.5.3Spectrometric measurements .88Expression of results .88.1Use of calibration curve .88.2Use of bracketing method .99Precision .910Test report . 10Bibliography . 12 SIST EN 15025:2010
EN 15025:2010 (E) 3 Foreword This document (EN 15025:2010) 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 January 2011, and conflicting national standards shall be withdrawn at the latest by January 2011. 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 15025:2006. Within its programme of work, Technical Committee CEN/TC 133 requested CEN/TC 133/WG 10 "Methods of analysis" to prepare the revision of the following document: CEN/TS 15025:2006, Copper and copper alloys — Determination of magnesium content — Flame atomic absorption spectrometry method (FAAS). In comparison with the first edition of CEN/TS 15025:2006, the following significant technical changes were made: − Transformation into a European Standard; − In 7.4.1.1, text added; − Clause 9, Precision - completely revised. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. SIST EN 15025:2010
EN 15025:2010 (E) 4 1 Scope This European Standard specifies a flame atomic absorption spectrometric method (FAAS) for the determination of magnesium content of copper and copper alloys in the form of unwrought, wrought and cast products. The method is applicable to products having magnesium mass fractions between 0,001 % and 0,20 %.
2 Normative references The following referenced documents are indispensable for the application of this document. 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 a hydrochloric-nitric acid mixture followed, after suitable dilution, by aspiration into an air/acetylene flame of an atomic absorption spectrometer. Determination of the magnesium content by measuring the absorption of the 285,2 nm line emitted by a magnesium hollow-cathode lamp. 4 Reagents During the analysis, use only reagents of recognized 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 100 ml of nitric acid (4.2) to 100 ml of water. 4.4 Magnesium stock solution, 0,5 g/l Mg. Weigh (0,5 ± 0,001) g of magnesium (Mg ≥ 99,9 %) and transfer it into a 250 ml beaker. Add 20 ml of the nitric acid solution (4.3) in small amounts. Cover with a watch glass and heat gently until the magnesium is completely dissolved. Boil the solution until nitrous fumes have been expelled. Cool to room temperature and transfer the solution quantitatively into a 1 000 ml one-mark volumetric flask. Dilute to the mark with water and mix well. 1 ml of this solution contains 0,5 mg of Mg. 4.5 Magnesium standard solution, 0,01 g/l Mg. Transfer 5 ml of the magnesium stock solution (4.4) into a 250 ml one-mark volumetric flask. Dilute to the mark with water and mix well.
SIST EN 15025:2010
EN 15025:2010 (E) 5 Prepare this solution immediately prior to use. 1 ml of this solution contains 0,01 mg of Mg. 4.6 Magnesium standard solution, 0,000 5 g/l Mg. Transfer 5 ml of the magnesium standard solution (4.5) into a 100 ml one-mark volumetric flask. Dilute to the mark with water and mix well. Prepare this solution immediately prior to use. 1 ml of this solution contains 0,000 5 mg of Mg. 4.7 Lanthanum (III) chloride solution, 200 g/l. Dissolve 100 g of lanthanum chloride heptahydrate (LaCl3·7H2O) in a 1 000 ml beaker with approximately 400 ml of water. Transfer the solution into a 500 ml one-mark volumetric flask. Dilute to the mark with water and mix well. 4.8 Copper base solution, 10 g/l Cu. Weigh (10 ± 0,01) g of electrolytic copper and transfer it into a 1 000 ml beaker. Add 100 ml of hydrochloric acid (4.1) and, in small amounts, 100 ml of the nitric acid solution (4.3). Cover with a watch glass and heat gently until the copper is
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