EN 12441-4:2003

Zinc and zinc alloys - Chemical analysis - Part 4: Determination of iron in zinc alloys - Spectrophotometric method

This European Standard specifies an analytical method for the determination of iron in zinc alloys by spectrophotometry. It is applicable to the products specified in prEN 1774 and prEN ..(00209007). It is suitable for the determination of iron content between 0,01 % and 0,08 %.

Zink und Zinklegierungen - Chemische Analyse - Teil 4: Bestimmung von Eisen in Zinklegierungen - Spektrophotometrisches Verfahren

Diese Europäische Norm legt ein spektrophotometrisches Analyseverfahren zur Bestimmung von Eisen in Zinklegierungen fest. Das Verfahren ist auf die in prEN 1774 und prEN ..(00209007). Es ist für die Bestimmung eines Eisengehaltes zwischen 0,01 % und 0,08 % geeignet.

Zinc et alliages de zinc - Analyse chimique - Partie 4: Dosage du fer dans les alliages de zinc - Méthode spectrophotométrique

La présente Norme européenne spécifie une méthode spectrophotométrique pour le dosage du fer dans les alliages de zinc. Elle s'applique aux produits spécifiés dans l'EN 1774 et l'EN 12844.
Cette méthode convient pour la détermination des teneurs (fractions massiques) du fer comprises entre 0,01 % et 0,1 %.

Cink in cinkove zlitine – Kemična analiza – 4. del: Določevanje železa v cinkovih zlitinah – Spektrofotometrijska metoda

General Information

• Status: Published
• Publication Date: 11-Mar-2003
• ICS: 77.040.30 - Chemical analysis of metals
• ICS: 77.120.60 - Lead, zinc, tin and their alloys
• Technical Committee: CEN/TC 209 - Zinc and zinc alloys
• Drafting Committee: CEN/TC 209/WG 6 - Methods of analysis and testing
• Current Stage: 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
• Start Date: 02-Dec-2024
• Completion Date: 02-Dec-2024
• Ref Project: SIST EN 12441-4:2004 - Zinc and zinc alloys - Chemical analysis - Part 4: Determination of iron in zinc alloys - Spectrophotometric method

Overview

EN 12441-4:2003 is a European Standard developed by the Committee for European Normalization (CEN) that specifies a reliable spectrophotometric method for determining the iron content in zinc alloys. This standard is essential for quality control in zinc alloy production, ensuring compliance with chemical composition requirements. The method is applicable to zinc alloy products complying with EN 1774 and EN 12844 specifications. It accurately measures iron content ranging from 0.01% to 0.1% by mass, providing a practical and standardized approach for chemical analysis in industrial settings.

Key Topics

• Scope and Applicability

  • Designed specifically for zinc and zinc alloy products as per EN 1774 and EN 12844.
  • Suitable for iron content analysis between 0.01% and 0.1% mass fraction.

• Analytical Principle

  • Formation of a colored ferric complex using sulfosalicylic acid in an ammoniacal solution.
  • Spectrophotometric measurement of the yellow ferric complex at a wavelength of 425 nm.

• Sample Preparation and Testing Procedure

  • Dissolution of the sample in hydrochloric acid with hydrogen peroxide to ensure complete digestion.
  • Use of pure cadmium to reduce copper interference by chemical reduction before analysis.
  • Calibration with iron standard solutions to generate absorbance versus iron concentration curves for accurate quantification.

• Reagents and Apparatus

  • Use of high-purity analytical grade reagents including hydrochloric acid, hydrogen peroxide, sulfosalicylic acid, and ammonia solution.
  • Requirement of glassware cleaned with aqua regia to avoid contamination.
  • Spectrophotometer set at 425 nm with 1 cm optical cells for precise absorbance measurements.

• Result Calculation and Reporting

  • Calculation of iron content through calibration curves correlated to sample absorbance.
  • Expressing results in mass percentage according to EN 1774 and EN 12844.
  • Detailed test reporting requirements ensuring traceability and compliance.

Applications

• Quality Control in Zinc Alloy Production
  EN 12441-4:2003 provides foundries and manufacturers with a standardized test method for monitoring iron content, which affects mechanical properties and corrosion resistance of zinc alloys.

• Product Compliance Verification
  Testing according to this standard ensures zinc alloys meet the chemical specifications set by European industry standards, critical for market acceptance.

• Research and Development
  Accurate iron quantification supports R&D activities aiming to optimize alloy compositions for specialized industrial applications.

• Regulatory and Certification Processes
  Compliance with this standard facilitates certification and quality audits within zinc alloy manufacture and supply chains across Europe.

Related Standards

EN 12441-4 is part of a comprehensive series of standards for chemical analysis of zinc and zinc alloys, including:

• EN 12441-1: Determination of aluminum in zinc alloys by titrimetric method.
• EN 12441-2: Determination of magnesium using flame atomic absorption spectrometry.
• EN 12441-3: Determination of lead, cadmium, and copper by flame atomic absorption spectrometry.
• EN 12441-5: Spectrophotometric method for iron determination in primary zinc.
• EN 1774: Specifications for zinc alloys intended for foundry purposes.
• EN 12844: Specifications for zinc alloy castings.

These complementary standards enable a full suite of chemical analyses to ensure integrity and conformity of zinc alloys for industrial and commercial use.

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Keywords: EN 12441-4:2003, zinc alloys, iron determination, spectrophotometric method, chemical analysis, zinc alloy quality control, European Standard, iron content measurement, zinc alloy specifications, EN 1774, EN 12844.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Zink und Zinklegierungen - Chemische Analyse - Teil 4: Bestimmung von Eisen in Zinklegierungen - Spektrophotometrisches VerfahrenZinc et alliages de zinc - Analyse chimique - Partie 4: Dosage du fer dans les alliages de zinc - Méthode spectrophotométriqueZinc and zinc alloys - Chemical analysis - Part 4: Determination of iron in zinc alloys - Spectrophotometric method77.120.60Svinec, cink, kositer in njihove zlitineLead, zinc, tin and their alloys77.040.30Kemijska analiza kovinChemical analysis of metalsICS:Ta slovenski standard je istoveten z:EN 12441-4:2003SIST EN 12441-4:2004en01-januar-2004SIST EN 12441-4:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12441-4March 2003ICS 77.040.30; 77.120.60English versionZinc and zinc alloys - Chemical analysis - Part 4: Determinationof iron in zinc alloys - Spectrophotometric methodZinc et alliages de zinc - Analyse chimique - Partie 4:Dosage du fer dans les alliages de zinc - MéthodespectrophotométriqueZink und Zinklegierungen - Chemische Analyse - Teil 4:Bestimmung von Eisen in Zinklegierungen -Spektrophotometrisches VerfahrenThis European Standard was approved by CEN on 21 November 2002.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 Management Centre 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 Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12441-4:2003 ESIST EN 12441-4:2004
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