CEN/TS 14938-2:2006

Copper and copper alloys - Determination of bismuth content - Part 2: FAAS method

This European Technical Specification specifies a flame atomic absorption spectrometric method (FAAS) for the determination of the bismuth content of copper and copper alloys in the form of unwrought, wrought and cast products.
The method is applicable to products having bismuth mass fractions between 0,01 % and 0,25 %.

Kupfer und Kupferlegierungen - Bestimmung des Bismutgehaltes - Teil 2: Flammenatomabsorptionsspektrometrisches Verfahren (FAAS)

Diese Europäische Technische Spezifikation legt ein flammenatomabsorptionsspektrometrisches Verfahren (FAAS) für die Bestimmung des Bismutgehaltes in Kupfer und Kupferlegierungen fest, die als Gussstücke oder als plastisch oder nicht plastisch geformte Produkte vorliegen.
Das Verfahren ist geeignet für Produkte mit Bismut Massenanteilen zwischen 0,01 % und 0,25 %.

Cuivre et alliages de cuivre - Dosage du bismuth - Partie 2 : Méthode par spectrométrie d'absorption atomique dans la flamme (SAAF)

La présente partie de cette Norme européenne spécifie une méthode par spectrométrie d'absorption atomique dans la flamme (SAAF) pour le dosage du bismuth 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 fractions massiques de bismuth comprises entre 0,01 % et 0,25 %.

Baker in bakrove zlitine - Določevanje bizmuta - 2. del: Metoda FAAS

General Information

• Status: Withdrawn
• Publication Date: 26-Sep-2006
• Withdrawal Date: 20-Jul-2010
• ICS: 77.120.30 - Copper and copper alloys
• Technical Committee: CEN/TC 133 - Copper and copper alloys
• Drafting Committee: CEN/TC 133/WG 10 - Methods of analysis
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 21-Jul-2010
• Completion Date: 21-Jul-2010
• Ref Project: SIST-TS CEN/TS 14938-2:2006 - Copper and copper alloys - Determination of bismuth content - Part 2: FAAS method

Relations

• Replaced By: EN 14938-2:2010 - Copper and copper alloys - Determination of bismuth content - Part 2: Flame atomic absorption spectrometric method (FAAS)
• Effective Date: 24-Jul-2010

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2006
%DNHULQEDNURYH]OLWLQH'RORþHYDQMHEL]PXWDGHO0HWRGD)$$6
Copper and copper alloys - Determination of bismuth content - Part 2: FAAS method
Kupfer und Kupferlegierungen - Bestimmung des Bismutgehaltes - Teil 2:
Flammenatomabsorptionsspektrometrisches Verfahren (FAAS)
Cuivre et alliages de cuivre - Dosage du bismuth - Partie 2 : Méthode par spectrométrie
d'absorption atomique dans la flamme (SAAF)
Ta slovenski standard je istoveten z: CEN/TS 14938-2:2006
ICS:
77.120.30 Baker in bakrove zlitine Copper and copper alloys
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CEN/TS 14938-2
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
September 2006
ICS 77.120.30
English Version
Copper and copper alloys - Determination of bismuth content -
Part 2: FAAS method
Cuivre et alliages de cuivre - Dosage du bismuth - Partie 2 : Kupfer und Kupferlegierungen - Bestimmung des
Méthode par spectrométrie d'absorption atomique dans la Bismutgehaltes - Teil 2:
flamme (SAAF) Flammenatomabsorptionsspektrometrisches Verfahren
(FAAS)
This Technical Specification (CEN/TS) was approved by CEN on 23 July 2006 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.
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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 14938-2:2006: E
worldwide for CEN national Members.

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 .8
9 Precision.9
10 Test report .9
Bibliography .10

Foreword
This document (CEN/TS 14938-2:2006) has been prepared by Technical Committee CEN/TC 133 “Copper and
copper alloys”, the secretariat of which is held by DIN.
Within its programme of work, Technical Committee CEN/TC 133 requested CEN/TC 133/WG 10 "Methods of
analysis" to prepare the following Technical Specification:
CEN/TS 14938-2, Copper and copper alloys — Determination of bismuth content — Part 2: FAAS method
This is one of two parts of the standard/technical specification for the determination of bismuth content in copper
and copper alloys. The other part is under preparation:
…, Copper and copper alloys — Determination of bismuth content — Part 1: Spectrophotometric method
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following coun-
tries are bound to announce this Technical Specification: Austria, Belgium, Cyprus, Czech Republic, Denmark, Es-
tonia, 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.
1 Scope
This European Technical Specification specifies a flame atomic absorption spectrometric method (FAAS) for the
determination of the bismuth content of copper and copper alloys in the form of unwrought, wrought and cast
products.
The method is applicable to products having bismuth mass fractions between 0,01 % and 0,25 %.
2 Normative references
The following referenced documents are indispensable for the application of this European Technical Specification.
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 a mixture of hydrochloric acid/hydrogen peroxide and nitric acid solutions followed,
after suitable dilution, by aspiration into an air/acetylene flame of an atomic absorption spectrometer. Measurement
of the absorption of the 223,1 nm line emitted by a bismuth 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 Nitric acid, HNO (ρ = 1,40 g/ml).
4.4 Hydrogen peroxide, H O 30 % (mass fraction) solution.
2 2
4.5 Bismuth stock solution, 1,000 g/l Bi
Weigh (0,25 ± 0,001) g of bismuth (Bi ≥ 99,9999 %) and transfer it into a 250 ml conical flask. Add 50 ml of nitric
acid (4.3). Heat gently until the bismuth is 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 250 ml one-mark volumetric
flask, dilute to the mark with water and mix well.
1 ml of this solution contains 1,000 mg of Bi.
4.6 Bismuth standard solution, 0,100 g/l Bi
Transfer 25,0 ml of the bismuth stock solution (4.5) into a 250 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 0,100 mg of Bi.
4.7 Copper base solution, 20 g/l Cu
Into a 600 ml tall beaker weigh 10,0 g of bismuth-free copper (Bi ≤ 0,005 %). Add 50 ml of distilled water and, in
small portions, 50 ml of nitric acid (4.3). Cover and heat gently until the copper is completely dissolved, then con-
tinue heating 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, dilute to the mark with wa-
ter and mix well.
1 ml of this solution contains 0,02 g of Cu.
5 Apparatus
5.1 Ordinary laboratory apparatus.
5.2 Atomic absorption spectrometer, fitted with an air/acetylene burner.
5.3 Bismuth 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 millings with a maximum thickness of 0,5 mm.
7 Procedure
7.1 Preparation of the test portion solution
7.1.1 Test portion
Weigh (1 ± 0,001) g of the test sample.
7.1.2 Test portion solution
Transfer the test portion (7.1.1) into a 250 ml beaker. Add 1
...