SIST EN 12441-5:2004

Zinc and zinc alloys - Chemical analysis - Part 5: Determination of iron in primary zinc - Spectrophotometric method

This European standard specifies an analytical method for the determining of iron in zinc and zinc alloys by spectrophotometry. It is applicable to the product specified in prEN 1179. It is suitable for the determination of iron contents between 0,001 and 0,1 %.

Zink und Zinklegierungen - Chemische Analyse - Teil 5: Bestimmung von Eisen in Primärzink - Spektrophotometrisches Verfahren

Diese Europäische Norm legt ein spektrophotometrisches Analyseverfahren zur Bestimmung von Eisen in Zink und Zinklegierungen fest. Das Verfahren ist auf die in prEN 1779 festgelegten Produkte anwendbar. Es ist für die Bestimmung eines Eisengehaltes zwischen 0,001 % und 0,1 % geeignet.

Zinc et alliages de zinc - Analyse chimique - Partie 5: Dosage du fer dans le zinc primaire - Méthode spectrophotométrique

La présente Norme européenne spécifie une méthode spectrophotométrique pour le dosage du fer dans le zinc primaire. Elle s'applique aux produits spécifiés dans l'EN 1779.
Cette méthode convient pour la détermination des teneurs (fractions massiques) du fer comprises entre 0,001 % et 0,1 %.

Cink in cinkove zlitine – Kemična analiza – 5. del: Določevanje železa v primarnem cinku – Spektrofotometrijska metoda

General Information

• Status: Published
• Publication Date: 31-Dec-2003
• ICS: 77.040.30 - Chemical analysis of metals
• ICS: 77.120.60 - Lead, zinc, tin and their alloys
• Technical Committee: INEK - Nonferrous metals
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jan-2004
• Due Date: 01-Jan-2004
• Completion Date: 01-Jan-2004
• Ref Project: EN 12441-5:2003 - Zinc and zinc alloys - Chemical analysis - Part 5: Determination of iron in primary zinc - Spectrophotometric method

Overview

SIST EN 12441-5:2004 is a European standard published by CEN specifying a spectrophotometric method for determining iron content in primary zinc. Designed for products conforming to EN 1179, this standard enables the accurate measurement of iron concentrations ranging from 0.001% to 0.1% by mass in zinc and zinc alloys. The method involves forming a colored ferric complex with sulfosalicylic acid in an ammoniacal medium and measuring its absorbance at 425 nm using a spectrophotometer.

This standard is part of a comprehensive series of analytical methods focused on chemical analysis of zinc and zinc alloys, contributing to quality control, compliance, and material certification within the zinc production and processing industry.

Key Topics

• Scope: Applicable to primary zinc, particularly products outlined in EN 1179; measurement range is 0.001% to 0.1% iron content.
• Analytical Principle: Formation of a yellow sulfosalicylic acid ferric complex in an ammoniacal medium followed by spectrophotometric absorbance measurement.
• Reagents: Utilizes ammonia solution, hydrochloric acid, hydrogen peroxide, sulfosalicylic acid, nickel chloride, and specially prepared standard iron solutions.
• Sample Preparation: Dissolution of zinc samples in hydrochloric acid, oxidation with hydrogen peroxide, optional use of nickel chloride to aid dissolution, and formation of the complex with sulfosalicylic acid and ammonia.
• Calibration: Creation of a calibration graph using standard iron solutions for correlation of absorbance readings to iron concentration.
• Apparatus: Requires standard laboratory glassware and a spectrophotometer set at 425 nm with 1 cm optical cells.
• Results Expression: Iron content calculated from calibration curves and expressed as a mass percentage according to EN 1179 guidelines.
• Test Reporting: Includes sample identification, test method reference, iron content data, any procedural deviations, and laboratory credentials.

Applications

• Quality Control in Zinc Production: Ensures primary zinc and zinc alloys meet specified iron content limits, crucial for maintaining alloy properties and preventing impurities.
• Material Certification: Provides reliable chemical analysis data for certification and compliance with European and international material standards.
• Process Monitoring: Used by metallurgical laboratories to monitor the purity of zinc batches and optimize refining processes by detecting trace iron levels.
• Regulatory Compliance: Supports manufacturers and distributors in meeting European regulatory standards and customer specifications for zinc products.
• Research and Development: Applicable in R&D laboratories for developing new zinc alloys and optimizing chemical compositions.

Related Standards

SIST EN 12441-5:2004 is part of a series on chemical analysis of zinc and zinc alloys, including but not limited to:

• EN 12441-1: Determination of aluminium in zinc alloys by titrimetric method.
• EN 12441-2: Determination of magnesium by flame atomic absorption spectrometry.
• EN 12441-3: Determination of lead, cadmium, and copper by flame atomic absorption spectrometry.
• EN 12441-4: Determination of iron in zinc alloys (other than primary zinc) by spectrophotometric method.
• EN 12441-6: Combined determination of aluminium and iron by flame atomic absorption spectrometry.
• prEN 12441-7 to prEN 12441-11: Various methods for tin, nickel, chromium, titanium, and silicon determinations in zinc alloys.

Additionally, EN 1179 provides specifications for primary zinc products, and EN 12060 details sampling methods for zinc and zinc alloys, both referenced for accurate application of EN 12441-5.

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By adhering to SIST EN 12441-5:2004, laboratories and manufacturers can achieve consistent, reliable, and standardized measurement of iron impurities in primary zinc, supporting the production of high-quality zinc materials and compliance with European metallurgical standards.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Zink und Zinklegierungen - Chemische Analyse - Teil 5: Bestimmung von Eisen in Primärzink - Spektrophotometrisches VerfahrenZinc et alliages de zinc - Analyse chimique - Partie 5: Dosage du fer dans le zinc primaire - Méthode spectrophotométriqueZinc and zinc alloys - Chemical analysis - Part 5: Determination of iron in primary zinc - 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 12441-5:2003SIST EN 12441-5:2004en01-januar-2004SIST EN 12441-5:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12441-5March 2003ICS 77.040.30; 77.120.60English versionZinc and zinc alloys - Chemical analysis - Part 5: Determinationof iron in primary zinc - Spectrophotometric methodZinc et alliages de zinc - Analyse chimique - Partie 5:Dosage du fer dans le zinc primaire - MéthodespectrophotométriqueZink und Zinklegierungen - Chemische Analyse - Teil 5:Bestimmung von Eisen in Primärzink -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 12441-5:2003 ESIST EN 12441-5:2004
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