SIST EN 12441-2:2004
(Main)Zinc and zinc alloys - Chemical analysis - Part 2: Determination of magnesium in zinc alloys - Flame atomic absorption spectrometric method
Zinc and zinc alloys - Chemical analysis - Part 2: Determination of magnesium in zinc alloys - Flame atomic absorption spectrometric method
This European Standard specifies a flame atomic absorption spectrometric method for the determination of magnesium in zinc alloys. It is applicable to the products specified in EN 1774 and EN 12844.
It is suitable for the determination of magnesium contents (mass fractions) between 0,002 % and 0,08 %.
Zink und Zinklegierungen - Chemische Analyse - Teil 2: Bestimmung von Magnesium in Zinklegierungen - FAAS-Verfahren
Diese Europäische Norm legt ein flammenatomabsorptionsspektrometrisches Verfahren (FAAS-Verfahren) für die Bestimmung von Magnesium in Zinklegierungen fest. Das Verfahren ist auf die in EN 1774 und EN 12844 festgelegten Produkte anwendbar.
Es ist geeignet für die Bestimmung von Magnesiumgehalten (Massenanteile) zwischen 0,002 % und 0,08 %.
Zinc et alliages de zinc - Analyse chimique - Partie 2: Dosage du magnésium dans les alliages de zinc - Méthode par spectrométrie d'absorption atomique dans la flamme
La présente Norme européenne spécifie une méthode par spectrométrie d'absorption atomique dans la flamme pour le dosage du magnésium dans les alliages de zinc. La méthode s'applique aux produits spécifiés dans l'EN 1774 et l'EN 12844.
Elle convient pour la détermination des teneurs (fractions massiques) du magnésium comprises entre 0,002 % et 0,08 %.
Cink in cinkove zlitine – Kemična analiza – 2. del: Določevanje magnezija v cinkovih zlitinah – Metoda plamenske atomske absorpcijske spektrometrije
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.PHWULMHZink und Zinklegierungen - Chemische Analyse - Teil 2: Bestimmung von Magnesium in Zinklegierungen - FAAS-VerfahrenZinc et alliages de zinc - Analyse chimique - Partie 2: Dosage du magnésium dans les alliages de zinc - Méthode par spectrométrie d'absorption atomique dans la flammeZinc and zinc alloys - Chemical analysis - Part 2: Determination of magnesium in zinc alloys - Flame atomic absorption spectrometric 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 12441-2:2001SIST EN 12441-2:2004en01-januar-2004SIST EN 12441-2:2004SLOVENSKI
STANDARD
SIST EN 12441-2:2004
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12441-2October 2001ICS 77.040.30; 77.120.60English versionZinc and zinc alloys - Chemical analysis - Part 2: Determinationof magnesium in zinc alloys - Flame atomic absorptionspectrometric methodZinc et alliages de zinc - Analyse chimique - Partie 2:Dosage du magnésium dans les alliages de zinc - Méthodepar spectrométrie d'absorption atomique dans la flammeZink und Zinklegierungen - Chemische Analyse - Teil 2:Bestimmung von Magnesium in Zinklegierungen - FAAS-VerfahrenThis European Standard was approved by CEN on 11 August 2001.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,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12441-2:2001 ESIST EN 12441-2:2004
EN 12441-2:2001 (E)2ContentspageForeword.31Scope.42Normative references.43Terms and definitions.44Principle.45Reagents.56Apparatus.67Sampling.68Procedure.69Calculation and expression of results.710Test report.8Annex A (informative)
Additional information on international round - Robin tests.9Annex B (informative)
Graphical representation of precision data.10SIST EN 12441-2:2004
EN 12441-2:2001 (E)3ForewordThis European Standard has been prepared by Technical Committee CEN/TC 209, "Zinc and zinc alloys", thesecretariat of which is held by AFNOR.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by April 2002, and conflicting national standards shall be withdrawn at the latest byApril 2002.Within its programme of work, Technical Committee CEN/TC 209 entrusted CEN/TC 209/WG 6 “Methods ofanalysis and testing”, with the preparation of the following document:prEN 12441-2, Zinc and zinc alloys - Chemical analysis - Part 2: Determination of magnesium in zinc alloys –Flame atomic absorption spectrometric method.This standard is part of a series of eleven standards. The other standards are: Part 1 : Determination of aluminium in zinc alloys - Titrimetric method Part 3 : Determination of lead, cadmium and copper - Flame atomic absorption spectrometric method Part 4 : Determination of iron in zinc alloys - Spectrophotometric method Part 5 : Determination of iron in primary zinc - Spectrophotometric method Part 6 : Determination of aluminium and iron - Flame atomic absorption spectrometric method Part 7 : Determination of tin - Flame atomic absorption spectrometric method after extraction Part 8 : Determination of tin in secondary zinc - Flame atomic absorption spectrometric method Part 9 : Determination of nickel in zinc alloys - Flame atomic absorption spectrometric method Part 10 : Determination of chromium and titanium in zinc alloys – Spectrophotometric method Part 11 : Determination of silicon in zinc alloys - Spectrophotometric methodThe annexes A and B are informative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,Switzerland and the United Kingdom.SIST EN 12441-2:2004
EN 12441-2:2001 (E)41 ScopeThis European Standard specifies a flame atomic absorption spectrometric method for the determination ofmagnesium in zinc alloys. It is applicable to the products specified in EN 1774 and EN 12844.It is suitable for the determination of magnesium contents (mass fractions) between 0,002 % and 0,08 %.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 1774, Zinc and zinc alloys - Alloys for foundry purposes - Ingot and liquid.EN 12060, Zinc and zinc alloys - Method of sampling – Specifications.EN 12844, Zinc and zinc alloys - Castings - Specifications.ISO 5725-1, Accuracy (trueness and precision) of measurement methods and results - Part 1: General principlesand definitions.3 Terms and definitionsFor the purposes of this European Standard, the terms and definitions given in EN 12060 and the following termand definition apply.3.1flame atomic absorption spectrometrymeasurement of the absorption of electromagnetic radiation, emitted by an element at a determined wavelength, byan absorbent medium (flame) formed of atoms of the same element that are in the ground state. Each elementabsorbs radiation of specific wavelengths and the intensity of the absorbed radiation is proportional to theconcentration of said element4 PrincipleA sample of the alloy is dissolved in a mixture of hydrochloric and nitric acid and, after adequate dilution andatomization of the solution in an air-acetylene (or nitrous oxide-acetylene) flame, the content of magnesium isdetermined by atomic absorption spectrometry at the wavelength of 285,21 nm.SIST EN 12441-2:2004
EN 12441-2:2001 (E)55 Reagents5.1 GeneralDuring the test, use only reagents of known or analytical grade and distilled or demineralised water.5.2 Hydrochloric acid,
= 1,19 g/ml5.3 Nitric acid,
= 1,4 g/ml5.4 Hydrochloric acid - nitric acid mixtureMix 180 volumes of hydrochloric acid (5.2) with 4 volumes of nitric acid (5.3). This mixture shall be freshly preparedjust before use.5.5 Lanthanum, 5 % solutionIntroduce 29,5 g of lanthanum oxide (La2O3) in a 400 ml beaker. Add 5 ml of water, then carefully add 50 ml ofhydrochloric acid (5.2). After dissolution, cool to room temperature. Transfer quantitatively to a 500 ml volumetricflask. Dilute to the mark with water and mix.5.6 Zinc, 10 g/l solutionDissolve 10 g of zinc (99,99 %), free from magnesium, (see 5.11), with 60
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