EN 12441-11:2006

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Zinc and zinc alloys - Chemical analysis - Part 11: Determination of silicon in zinc alloys - Spectrophotometric methodZinc et alliages de zinc - Analyse chimique - Partie 11 : Dosage du silicium dans les alliages de zinc - Méthode spectrophotométriqueZink und Zinklegierungen - Chemische Analyse - Teil 11: Bestimmung von Silicium in Zinklegierungen - Spektrophotometrisches VerfahrenTa slovenski standard je istoveten z:EN 12441-11:2006SIST EN 12441-11:2006en77.120.6077.040.30ICS:SLOVENSKI
STANDARDSIST EN 12441-11:200601-november-2006

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12441-11August 2006ICS 77.120.60 English VersionZinc and zinc alloys - Chemical analysis - Part 11: Determinationof silicon in zinc alloys - Spectrophotometric methodZinc et alliages de zinc - Analyse chimique - Partie 11 :Dosage du silicium dans les alliages de zinc - MéthodespectrophotométriqueZink und Zinklegierungen - Chemische Analyse - Teil 11:Bestimmung von Silicium in Zinklegierungen -Spektrophotometrisches VerfahrenThis European Standard was approved by CEN on 7 July 2006.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 Central Secretariat 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 Central Secretariat has the same status as the officialversions.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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12441-11:2006: E

Additional information on international co-operative tests.8 Annex B (informative)
Graphical representation of precision data.9 Bibliography.10

Part 1: Determination of aluminium in zinc alloys – Titrimetric method  Part 2: Determination of magnesium in zinc alloys – Flame atomic absorption spectrometric 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 According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: 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.

EN 12060:1997, Zinc and zinc alloys – Method of sampling – Specifications EN 12844, Zinc and zinc alloys – Castings – Specifications 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 12060:1997 apply. 4 Principle Direct spectrophotometric determination of silicomolybdenum blue after dissolution of the sample in hydrochloric and hydrofluoric acid. 5 Reagents 5.1 General During the test, use only reagents of known analytical grade. 5.2 Bidistilled water (for preparation and dilution of all solutions) 5.3 Hydrochloric acid, ρ = 1,19 g/ml 5.4 Hydrofluoric acid, ρ = 1,13 g/ml 5.5 Boric acid 5.6 Ammonium molybdate (NH4)6Mo7O24 . 4H2O 5.7 Sodium metabisulfite Na2S2O5 5.8 Sodium sulfite Na2SO3 5.9 1-amino-2-naphtol-4-sulfonic acid
...