EN 14942-2:2006
(Main)Copper and copper alloys - Determination of arsenic content - Part 2: FAAS method
Copper and copper alloys - Determination of arsenic content - Part 2: FAAS method
This part of this European Standard specifies a flame atomic absorption spectrometric method (FAAS) for the
determination of the arsenic content of copper and copper alloys in the form of unwrought, wrought and cast products.
The method is applicable to products having arsenic mass fractions between 0,01 % and 1,5 %.
Kupfer und Kupferlegierungen - Bestimmung des Arsengehaltes - Teil 2: Flammenatomabsorptionsspektrometrisches Verfahren (FAAS)
Dieser Teil dieser Europäischen Norm legt ein flammenatomabsorptionsspektrometrisches Verfahren (FAAS) für die Bestimmung des Arsengehaltes in Kupfer und Kupferlegierungen fest, die als Gussstücke oder als plastisch oder nicht plastisch geformte Produkte vorliegen.
Das Verfahren ist geeignet für Produkte mit Arsen-Massenanteilen zwischen 0,01 % und 1,5 %.
Cuivre et alliages de cuivre - Dosage de l'arsenic - Partie 2 : Méthode par spectrométrie d'absorption atomique dans la flamme (SAAF)
Cette partie de la présente Norme européenne spécifie une méthode par spectrométrie d’absorption atomique dans la flamme (SAAF) pour le dosage de l’arsenic dans le cuivre et les alliages de cuivre sous la forme de produits non corroyés, corroyés et coulés.
La méthode s’applique aux produits ayant des teneurs en arsenic comprises entre 0,01 % et 1,5 %.
Baker in bakrove zlitine - Ugotavljanje vsebnosti arzena - 2. del: Metoda FAAS
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Copper and copper alloys - Determination of arsenic content - Part 2: FAAS methodBaker in bakrove zlitine - Ugotavljanje vsebnosti arzena - 2. del: Metoda FAASCuivre et alliages de cuivre - Dosage de l'arsenic - Partie 2 : Méthode par spectrométrie d'absorption atomique dans la flamme (SAAF)Kupfer und Kupferlegierungen - Bestimmung des Arsengehaltes - Teil 2: Flammenatomabsorptionsspektrometrisches Verfahren (FAAS)Ta slovenski standard je istoveten z:EN 14942-2:2006SIST EN 14942-2:2006en77.120.30ICS:SLOVENSKI
STANDARDSIST EN 14942-2:200601-september-2006
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14942-2June 2006ICS 77.120.30 English VersionCopper and copper alloys - Determination of arsenic content -Part 2: FAAS methodCuivre et alliages de cuivre - Dosage de l'arsenic - Partie 2: Méthode par spectrométrie d'absorption atomique dans laflamme (SAAF)Kupfer und Kupferlegierungen - Bestimmung desArsengehaltes - Teil 2:Flammenatomabsorptionsspektrometrisches Verfahren(FAAS)This European Standard was approved by CEN on 15 May 2006.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 concerning such nationalstandards may be obtained on application to the Central Secretariat 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 language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14942-2:2006: E
Contents Page Foreword.3 1 Scope.4 2 Normative references.4 3 Principle.4 4 Reagents and materials.4 5 Apparatus.5 6 Sampling.5 7 Procedure.5 8 Expression of results.9 9 Precision.10 10 Test report.10 Bibliography.11
3 Foreword This document (EN 14942-2:2006) 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 December 2006, and conflicting national standards shall be withdrawn at the latest by December 2006. Within its programme of work, Technical Committee CEN/TC 133 requested CEN/TC 133/WG 10 "Methods of analysis" to prepare the following standard: EN 14942-2, Copper and copper alloys — Determination of arsenic content — Part 2: FAAS method This is one of two parts of the standard for the determination of arsenic content in copper and copper alloys. The other part is: prEN 14942-1, Copper and copper alloys — Determination of arsenic content — Part 1: Spectrometric method According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following coun-tries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Esto-nia, 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.
1 Scope This part of this European Standard specifies a flame atomic absorption spectrometric method (FAAS) for the
determination of the arsenic content of copper and copper alloys in the form of unwrought, wrought and cast prod-ucts. The method is applicable to products having arsenic mass fractions between 0,01 % and 1,5 %. 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 NOTE Informative references to documents used in the preparation of this standard, and cited at the appropriate places in the text, are listed in the Bibliography. 3 Principle Dissolution of a test portion in hydrochloric acid and hydrogen peroxide followed, after suitable dilution, by aspira-tion into an air/acetylene flame of an atomic absorption spectrometer. Measurement of the absorption of the 193,7 nm line emitted by an arsenic hollow-cathode or electrodeless discharge lamp. 4 Reagents and materials 4.1 General During the analysis, use only reagents of recognized analytical grade and only distilled water or water of equivalent purity. 4.2 Hydrochloric acid, HCl (ρ = 1,19 g/ml). 4.3 Hydrochloric acid solution, 7 + 3 Dilute 700 ml of hydrochloric acid (4.2) in 300 ml of water. 4.4 Hydrogen peroxide, H2O2 30 % (mass fraction) solution. 4.5 Potassium hydroxide, KOH 20 % solution Weigh 20,0 g of potassium hydroxide pellets and dissolve gently in 50 ml of water. Cool to room temperature and dilute to 100 ml with water. 4.6 Arsenic stock solution, 1,000 g/l As Weigh (1,320 ± 0,001) g of primary standard arsenious oxide (As2O3 purity ≥ 99,5 %) and dissolve it in 25 ml of the potassium hydroxide solution (4.5). Transfer the solution quantitatively into a 1 000 ml one-mark polyethylene volumetric flask. Dilute to the mark with water and mix well. 1 ml of this solution contains 1,000 mg of As.
5 4.7 Arsenic standard solution, 0,050 g/l As Transfer 10,0 ml of the arsenic stock solution (4.6) into a 200 ml one-mark polyethylene volumetric flask. Dilute to the mark with water and mix well. Prepare this solution immediately prior to use. 1 ml of this solution contains 0,050 mg of As. 4.8 Arsenic standard solution, 0,500 g/l As Transfer 50,0 ml of the arsenic stock solution (4.6) into a 100 ml one-mark polyethylene volumetric flask. Dilute to the mark with water and mix well. Prepare this solution immediately prior to use. 1 ml of this solution contains 0,500 mg of As. 4.9 Copper base solution, 50 g/l Cu Weigh 31,294 g of copper II oxide (CuO ≥ 98 %, As ≤ 0,000 2 %) or 25 g copper (Cu ≥ 99,90 %, As ≤ 0,000 2 %) and transfer into a 800 ml beaker. Dissolve it gently with 100 ml of hydrochloric acid solution (4.3) previously cooled. Add slowly hydrogen peroxide (4.4) in small portions while cooling (approximately 50 ml total) until the dis-solution is complete. Cover and heat to the boiling point. Cool to room temperature. Wash the beaker cover and the sides of the beaker with water. Transfer the solution quantitatively into a 500 ml one-mark volumetric flask, add 250 ml of hydrochloric acid solution (4.3), dilute to the mark with water and mix well. 5 Apparatus 5.1 Ordinary laboratory apparatus. 5.2 Atomic absorption spectrometer, fitted with an air/acetylene burner. 5.3 Arsenic hollow-cathode or electrodeless discharge 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
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