SIST EN 15024-2:2018

Copper and copper alloys - Determination of zinc content - Part 2: Flame atomic absorption spectrometric method (FAAS)

This part of this European Standard specifies a flame atomic absorption spectrometric method (FAAS) for the determination of the zinc content of copper and copper alloys in the form of unwrought, wrought and cast products.
The method is applicable to products having zinc mass fractions between 0,000 5 % and 5,0 %.

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

Dieser Teil dieser Europäischen Norm legt ein flammenatomabsorptionsspektrometrisches Verfahren (FAAS) für die Bestimmung des Zinkgehaltes in Kupfer und Kupferlegierungen fest, die als Gussstücke oder als plastisch oder nicht plastisch geformte Produkte vorliegen.
Das Verfahren ist geeignet für Produkte mit Zink-Massenanteilen zwischen 0,000 5 % und 5,0 %.

Cuivre et alliages de cuivre - Dosage du zinc - 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 la détermination des teneurs en zinc dans le cuivre et les alliages de cuivre sous forme de produits non corroyés, corroyés ou moulés.
La méthode est applicable aux produits ayant une teneur en zinc comprise entre 0,000 5 % et 5,0 %.

Baker in bakrove zlitine - Določevanje cinka - 2. del: Metoda s plamensko atomsko absorpcijsko spektrometrijo (FAAS)

Del tega evropskega standarda določa metodo s plamensko atomsko absorpcijsko spektrometrijo (FAAS) za določevanje cinka v bakru in bakrovih zlitinah v negnetenih, gnetenih in ulitih proizvodih. Ta metoda se uporablja za proizvode z masnim deležem cinka med 0,0005 % in 6 %.

General Information

• Status: Published
• Public Enquiry End Date: 04-Jan-2017
• Publication Date: 16-May-2018
• ICS: 77.120.30 - Copper and copper alloys
• Technical Committee: INEK - Nonferrous metals
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 03-May-2018
• Due Date: 08-Jul-2018
• Completion Date: 17-May-2018
• Ref Project: EN 15024-2:2018 - Copper and copper alloys - Determination of zinc content - Part 2: Flame atomic absorption spectrometric method (FAAS)

Relations

• Replaces: SIST EN 15024-2:2007 - Copper and copper alloys - Determination of zinc content - Part 2: Flame atomic absorption spectrometry method (FAAS)
• Effective Date: 01-Jun-2018

Overview

EN 15024-2:2018 - issued by CEN - specifies a flame atomic absorption spectrometric (FAAS) method for determining zinc content in copper and copper alloys (unwrought, wrought and cast). The method covers zinc mass fractions from 0,000 5 % (0.0005 %) up to 5,0 % (5.0 %). It replaces the 2006 edition and includes updates to reagents, calibration practice and precision data.

Keywords: EN 15024-2:2018, FAAS, zinc determination, copper alloys, CEN, flame atomic absorption spectrometric method.

Key topics and technical requirements

• Principle: Dissolve a defined test portion in hydrochloric + nitric acid, dilute and aspirate into an air/acetylene flame; measure zinc absorbance at 213.8 nm using a zinc hollow‑cathode lamp or an alternative continuum xenon short‑arc lamp.
• Scope and applicability: Applicable to unwrought, wrought and cast copper products; validated for zinc mass fractions 0.0005–5.0 %.
• Sampling and sample form: Sampling in accordance with ISO 1811‑1 / ISO 1811‑2. Test samples are fine drillings, chips or millings with maximum thickness 0.5 mm.
• Reagents and standards: Use analytical‑grade reagents. Specifies preparation of zinc stock and standard solutions, copper base solutions (to match matrix effects), and acid solutions (HCl and HNO3) for dissolution.
• Calibration and matrix matching: Calibration solutions must mimic copper, chloride/nitrate concentrations and acidity of test solutions. Detailed calibration tables are provided for different zinc ranges to ensure linear absorbance vs concentration.
• Quality control: Requires blank tests, check tests using reference or synthetic samples, and documented precision/performance criteria.
• Apparatus: FAAS instrument with air/acetylene burner; zinc hollow‑cathode lamp or continuum xenon short arc lamp allowed.

Applications and users

• Quality control and incoming inspection in copper and brass manufacturing and foundries.
• Chemical analysis laboratories performing alloy certification and composition verification.
• Materials testing and failure analysis where accurate zinc quantification in copper alloys is required.
• Regulatory and conformity assessment bodies that need a harmonized European method for reporting zinc content.

Related standards

• EN 15024-1: Determination of zinc content - Part 1: Titrimetric method (complementary technique).
• ISO 1811-1 / ISO 1811-2: Sampling and preparation of copper and copper alloy samples for chemical analysis.

This standard is essential for labs and manufacturers seeking a traceable, matrix‑matched FAAS method for reliable zinc measurement in copper alloys.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kupfer und Kupferlegierungen - Bestimmung des Zinkgehaltes - Teil 2: Flammenatomabsorptionsspektrometrisches Verfahren (FAAS)Cuivre et alliages de cuivre - Dosage du zinc - Partie 2 : Méthode par spectrométrie d'absorption atomique dans la flamme (SAAF)Copper and copper alloys - Determination of zinc content - Part 2: Flame atomic absorption spectrometric method (FAAS)77.120.30Baker in bakrove zlitineCopper and copper alloysICS:Ta slovenski standard je istoveten z:EN 15024-2:2018SIST EN 15024-2:2018en01-junij-2018SIST EN 15024-2:2018SLOVENSKI
STANDARDSIST EN 15024-2:20071DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15024-2
April
t r s z ICS
y yä s t rä u r Supersedes EN
s w r t væ tã t r r xEnglish Version
Copper and copper alloys æ Determination of zinc content æPart
tã Flame atomic absorption spectrometric method Cuivre et alliages de cuivre æ Détermination de la teneur en zinc æ Partie
t ã Méthode par spectrométrie
Kupfer und Kupferlegierungen æ Bestimmung des Zinkgehaltes æ Teil
tã Flammenatomabsorptionsspektrometrisches This European Standard was approved by CEN on
s z January
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s w r t væ tã t r s z ESIST EN 15024-2:2018

3 European foreword This document (EN 15024-2:2018) 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 October 2018, and conflicting national standards shall be withdrawn at the latest by October 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 15024-2:2006. 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 15024-2, Copper and copper alloys — Determination of zinc content — Part 2: Flame atomic absorption spectrometric method (FAAS) This is one of two parts of the standard for the determination of zinc content in copper and copper alloys. The other part is: prEN 15024-1, Copper and copper alloys — Determination of zinc content — Part 1: Titrimetric method In comparison with EN 15024-2:2006, the following significant changes were made: a) The upper limit of the zinc mass fraction has been reduced from 6,0 % to 5,0 %; b) Fluoroboric-nitric acid mixture has been replaced by a solution of hydrochloric and nitric acids for the dissolution of the test portion; c) The concentrations of the zinc stock solution and the copper base solutions have been modified; d) The use of a continuum source xenon short arc lamp has been added as an alternative to the use of a zinc hollow-cathode lamp; e) The precision data have been updated. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 15024-2:2018

= 1,40 g/ml). 4.4 Nitric acid solution, 1 + 1. Add 500 ml of nitric acid (4.3) to 500 ml of water. 4.5 Zinc stock solution, 1 g/l Zn. Weigh (1 ± 0,001) g of zinc (Zn
· 99,99 %) and transfer it into a 250 ml beaker. Add 50 ml of hydrochloric acid solution (4.2). Cover with a watch glass and heat gently to assist dissolution. When dissolution is complete, 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 1 mg of Zn. SIST EN 15024-2:2018

5 4.6 Zinc standard solution, 0,01 g/l Zn. Transfer 5,0 ml of the zinc stock solution (4.5) into a 500 ml one-mark volumetric flask. Dilute to the mark with water and mix well. 1 ml of this solution contains 0,01 mg of Zn. 4.7 Zinc standard solution, 0,001 g/l Zn. Transfer 25,0 ml of the zinc standard solution (4.6) into a 250 ml one-mark volumetric flask. Dilute to the mark with water and mix well. 1 ml of this solution contains 0,001 mg of Zn. 4.8 Copper base solution, 50 g/l Cu. Transfer 50,0 g of zinc-free copper (Cu
· 99,99 %) into a 2 000 ml beaker. Add 500 ml of hydrochloric acid (4.1) and, by small fractions, 250 ml of nitric acid (4.3). Cover with a watch glass and heat gently until the copper has been completely dissolved, then heat up to the boiling point until the 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. 4.9 Copper base solution, 2 g/l Cu Transfer 10,0 ml of copper base solution (4.8) into a 250 ml one-mark volumetric flask. Dilute to the mark with water and mix well. 5 Apparatus 5.1 Atomic absorption spectrometer, fitted with an air/acetylene burner. 5.2 Zinc hollow-cathode lamp or a continuum source xenon short arc 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 10 ml of hydrochloric acid (4.1) and 10 ml of the nitric acid solution (4.4). Cover with a watch glass and heat gently until the test portion is completely dissolved and then bring to the boiling point until the nitrous fumes have been expelled. Cool to room temperature, and wash the beaker cover and the sides of the beaker with water. SIST EN 15024-2:2018

test of this method showed that for zinc mass fractions near 0,01 % results are better when the determination is carried out following 7.1.3. 7.1.4 Zinc mass fractions between 0,01 % and 0,10 % Transfer the test portion solution (7.1.2) quantitatively into a 100 ml one-mark volumetric flask. Dilute to the mark with water and mix well. Transfer 10,0 ml of this solution, into a 100 ml one-mark volumetric flask. Dilute to the mark with water and mix well. NOTE The validation inter-laboratory test of this method showed
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