EN 14935:2006

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Copper and copper alloys - Determination of impurities in pure copper - ET AAS methodCuivre et alliages de cuivre - Dosage des impuretés dans le cuivre pur - Méthode par spectrométrie d'absorption atomique électrothermique (ET-AAS)Kupfer und Kupferlegierungen - Bestimmung der Verunreinigungen in reinem Kupfer - Elektrothermales Atomabsorptionsspektrometrie-Verfahren (ET-AAS)Ta slovenski standard je istoveten z:EN 14935:2006SIST EN 14935:2006en77.120.30ICS:SLOVENSKI
STANDARDSIST EN 14935:200601-september-2006

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14935June 2006ICS 77.120.30 English VersionCopper and copper alloys - Determination of impurities in purecopper - ET AAS methodCuivre et alliages de cuivre - Dosage des impuretés dans lecuivre pur - Méthode par spectrométrie d'absorptionatomique électrothermiqueKupfer und Kupferlegierungen - Bestimmung derVerunreinigungen in reinem Kupfer - ElektrothermalesAtomabsorptionsspektrometrie-Verfahren (ET-AAS)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 14935:2006: E

Matrix modifiers.18 Bibliography.19

Concentration range in µg/g Element Method A Method B
from up to andincluding from up to and including
Ag 1 30 0,02 1,0
As 1 20 0,04 1,0
Bi 1
5 0,09 1,0
Cd 1
5 0,001 1,0
Co 1 10 0,04 1,0
Cr 1 10 0,04 1,0
Fe 1 10 0,01 1,0
Mn 1 10 0,02 1,0
Ni 1 30 0,01 1,0
Pb 1 10 0,01 1,0
Sb 1 10 0,2 1,0
Se 1 10 0,05 1,0
Sn 1 10 0,02 1,0
Te 1 10 0,05 1,0
Zn 1 10 0,01 1,0
Method B (method of additions) is applicable to products containing impurity elements at concentrations below 1,0 µg/g. This method uses special ET AAS equipment fitted with background correction by means of the Zeemann effect. 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.

nm
Ag 328,1
As 193,7
Bi 223,1
Cd 228,8
Co 240,7
Cr 357,9
Fe 248,3
Mn 279,5
Ni 232,0
Pb 283,3
Sb 217,6
Se 196,0
Sn 224,6
Te 214,3
Zn 213,9
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 Nitric acid, HNO3 (ρ = 1,40 g/ml). 4.4 Nitric acid solution, 1 + 1 Dilute 500 ml of nitric acid (4.3) in 500 ml of water. 4.5 Nitric acid solution, 1 + 3 Dilute 250 ml of nitric acid (4.3) in 750 ml of water. 4.6 Pure sodium hydroxide, NaOH 1 mol/l.

Lead Weigh (1 ± 0,001) g of lead (Pb ≥ 99,90 %) and transfer it into a 250 ml beaker. Add 40 ml of nitric acid solution (4.4). Heat gently until the lead has been completely dissolved and then bring to the boiling point until the nitrous fumes have been expelled. Cool to room temperature, transfer the solution quantitatively into a 1 000 ml one-mark volumetric flask, dilute to the mark with water and mix well. 4.9.11
Antimony Weigh (1 ± 0,001) g of antimony (Sb ≥ 99,90 %) and transfer it into a 250 ml beaker. Add 25 ml of hydrochloric acid (4.2) and 50 ml of nitric acid solution (4.4). Heat gently until the antimony has been completely dissolved. Cool to room temperature. Transfer the solution quantitatively into a 1 000 ml of one-mark volumetric flask. Add 100 ml of hydrocloric acid (4.2). Dilute to the mark with water and mix well. 4.9.12
Selenium Weigh (1 ± 0,001) g of selenium (Se ≥ 99,90 %) and transfer it into a 250 ml beaker. Add 40 ml of nitric acid solu-tion (4.4). Heat gently until the selenium has been completely dissolved and then bring to the boiling point until the nitrous fumes have been expelled. Cool to room temperature, transfer the solution quantitatively into a 1 000 ml one-mark volumetric flask, dilute to the mark with water and mix well. 4.9.13
Tin Weigh (1 ± 0,001) g of tin (Sn ≥ 99,90 %) and transfer it into a 250 ml PTFE beaker. Add 40 ml of nitric acid solu-tion (4.4) and 2 ml of hydrofluoric acid (4.8). After dissolution, transfer it quantitatively into a 1 000 ml plastics one-mark volumetric flask containing 500 ml of water. Dilute to the mark with water and mix well. 4.9.14
Tellurium Weigh (1 ± 0,001) g of tellurium (Te ≥ 99,90 %) and transfer it into a 250 ml beaker. Add 40 ml of nitric acid solution (4.4). Heat gently until the tellurium has been completely dissolved and then bring to the boiling point until the ni-trous fumes have been expelled. Cool to room temperature, tra
...