EN 15022-3:2006

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Copper and copper alloys - Determination of tin content - Part 3: Low tin content - Flame atomic absorption spectrometry method (FAAS)$$6Cuivre et alliages de cuivre - Dosage de l'étain - Partie 3 : Etain en faible teneur - Méthode par spectrométrie d'absorption atomique dans la flamme (SAAF)Kupfer und Kupferlegierungen - Bestimmung des Zinngehaltes - Teil 3: Niedriger Zinngehalt - Flammenatomabsorptionsspektrometrisches Verfahren (FAAS)Ta slovenski standard je istoveten z:EN 15022-3:2006SIST EN 15022-3:2006en77.120.30Baker in bakrove zlitineCopper and copper alloysICS:SLOVENSKI
STANDARDSIST EN 15022-3:200601-december-2006

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15022-3October 2006ICS 77.120.30 English VersionCopper and copper alloys - Determination of tin content - Part 3:Low tin content - Flame atomic absorption spectrometry method(FAAS)Cuivre et alliages de cuivre - Dosage de l'étain - Partie 3 :Etain en faible teneur - Méthode par spectrométried'absorption atomique dans la flamme (SAAF)Kupfer und Kupferlegierungen - Bestimmung desZinngehaltes - Teil 3: Niedriger Zinngehalt -Flammenatomabsorptionsspektrometrisches Verfahren(FAAS)This European Standard was approved by CEN on 14 August 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 15022-3:2006: 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.6 8 Expression of results.8 9 Precision.9 10 Test report.10 Bibliography.11

Foreword This European Standard (EN 15022-3:2006) 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 April 2007, and conflicting national standards shall be withdrawn at the latest by April 2007. 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 15022-3, Copper and copper alloys — Determination of tin content — Part 3: Low tin content — Flame atomic absorption spectrometry method (FAAS) This is one of four parts of the standard/Technical Specification for the determination of tin content in copper and copper alloys. The other parts are: prEN 15022-1, Copper and copper alloys — Determination of tin content — Part 1: Titrimetric method prEN 15022-2, Copper and copper alloys — Determination of tin content — Part 2: Spectrometric method prEN 15022-4, Copper and copper alloys - Determination of tin content - Part 4: Medium tin content – Flame atomic absorption spectrometry method (FAAS) According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: 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.

1 Scope This part of this European Standard specifies a flame atomic absorption spectrometric method (FAAS) for the determination of tin content of copper and copper alloys in the form of unwrought, wrought and cast products. The method is applicable to products having low tin mass fractions between 0,001 % and 0,6 %. 2 Normative references The following referenced documents are indispensable for the application of this European Standard. 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 hydrogen peroxide. Extraction of tin into the organic phase with a solution of trioctylphosphine oxide in methylisobutylketone followed by aspiration of the organic solution into a nitrous oxide/acetylene flame of an atomic absorption spectrometer. Measurement of the absorption of the 286,3 nm line emitted by a tin hollow-cathode lamp. 4 Reagents and materials 4.1 General During the analysis, use only reagents of recognised analytical grade and only distilled water or water of equivalent purity. 4.2 Ethanol, C2H5OH 4.3 4-methylpentan-2-one (methylisobutylketone) (M.I.B.K.), CH3COCH2CH(CH3)2 WARNING — 4-methylpentan-2-one is a volatile, flammable organic material. Normal safety precautions should be taken. 4.4 M.I.B.K. alcoholic solution Mix 92 parts of M.I.B.K. solution (4.3) with 8 parts of ethanol (4.2). 4.5 Hydrochloric acid, HCl (ρ
= 1,19 g/ml) 4.6 Hydrochloric acid solution, 1 + 1 Dilute 500 ml of hydrochloric acid (4.5) in 500 ml of water.

4.7 Hydrogen peroxide, H2O2 30 % (mass fraction) solution, free from tin base stabilizers 4.8 Trioctylphosphine oxide (T.O.P.O.), [CH3(CH2)7]3PO 25 g/l solution in 4-methylpentan-2-one In a 200 ml one-mark volumetric flask, dissolve 5 g of trioctylphosphine oxide [CH3(CH2)7]3PO in 4-methylpentan-2-one (4.3). Dilute to the mark with 4-methylpentan-2-one and mix well. 4.9 T.O.P.O. alcoholic solution Mix 92 parts of T.O.P.O. solution (4.8) with 8 parts of ethanol (4.2). 4.10 Tin stock solution, 0,5 g/l Sn Weigh (0,5 ± 0,001) g of tin (Sn ≥ 99 %) and transfer it into a 500 ml narrow-necked conical flask. Add 100 ml of hydrochloric acid (4.5) and cover with a watch glass. When dissolution is complete, add 100 ml of water and several drops of hydrogen peroxide solution (4.7). Cool and transfer this 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 Sn. 4.11 Tin standard solution, 0,05 g/l Sn Using a calibrated pipette, transfer 10 ml of the tin stock solution (4.10) into a 100 ml one-mark volumetric flask. Add 9 ml of hydrochloric acid (4.5) and dilute to about 90 ml with water. Cool, dilute to the mark with water and mix well. 1 ml of this solution contains 0,05 mg of Sn. 5 Apparatus 5.1 Ordinary laboratory apparatus 5.2 Atomic absorption spectrometer, fitted with a nitrous oxide/acetylene burner. 5.3
...