EN 13806:2002
(Main)Foodstuffs - Determination of trace elements - Determination of mercury by cold-vapour atomic absorption spectrometry (CVAAS) after pressure digestion
Foodstuffs - Determination of trace elements - Determination of mercury by cold-vapour atomic absorption spectrometry (CVAAS) after pressure digestion
This European Standard specifies a method for the determination of mercury in foodstuffs by cold-vapour atomic absorption spectrometry (CVAAS) after pressure digestion.
Specific foodstuffs for which European Standards exist are excluded from the scope of this horizontal European Standard. It is the task of the analyst to review if vertical standards exist.
Lebensmittel - Bestimmung von Elementspuren - Bestimmung von Quecksilber mit Atomabsorptionsspektrometrie (AAS)-Kaltdampftechnik nach Druckaufschluss
Diese Europäische Norm legt ein Verfahren zur Bestimmung von Quecksilber in Lebensmitteln mit der AAS-Kalt-dampftechnik nach Druckaufschluss fest.
Lebensmittel, für die es spezielle Europäische Normen gibt, sind vom Anwendungsbereich dieser horizontalen Europäischen Norm ausgenommen. Es obliegt dem Analytiker, das Vorhandensein vertikaler Normen zu prüfen.
Produits alimentaires - Dosage des éléments-traces - Dosage du mercure par spectrométrie d'absorption atomique par génération de vapeurs froides après digestion sous pression
La présente Norme européenne spécifie une méthode de dosage du mercure présent dans les produits alimentaires par spectrométrie d'absorption atomique par génération de vapeurs froides après digestion sous pression.
Les produits alimentaires qui ont déjà été traités spécifiquement dans le cadre de Normes européennes ne font pas partie du domaine d'application de la présente norme horizontale. C'est à l'analyste de vérifier s'il existe des normes verticales applicables.
Živila - Določevanje elementov v sledovih - Določevanje živega srebra z atomsko absorpcijsko spektrometrijo hladnih par po razklopu pod pritiskom
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Lebensmittel - Bestimmung von Elementspuren - Bestimmung von Quecksilber mit Atomabsorptionsspektrometrie (AAS)-Kaltdampftechnik nach DruckaufschlussProduits alimentaires - Dosage des éléments-traces - Dosage du mercure par spectrométrie d'absorption atomique par génération de vapeurs froides apres digestion sous pressionFoodstuffs - Determination of trace elements - Determination of mercury by cold-vapour atomic absorption spectrometry (CVAAS) after pressure digestion67.050Splošne preskusne in analizne metode za živilske proizvodeGeneral methods of tests and analysis for food productsICS:Ta slovenski standard je istoveten z:EN 13806:2002SIST EN 13806:2002en01-november-2002SIST EN 13806:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13806August 2002ICS 67.050English versionFoodstuffs - Determination of trace elements - Determination ofmercury by cold-vapour atomic absorption spectrometry(CVAAS) after pressure digestionProduits alimentaires - Dosage des éléments-traces -Dosage du mercure par spectrométrie d'absorptionatomique par génération de vapeurs froides après digestionsous pressionLebensmittel - Bestimmung von Elementspuren -Bestimmung von Quecksilber mitAtomabsorptionsspektrometrie (AAS)-Kaltdampftechniknach DruckaufschlussThis European Standard was approved by CEN on 29 May 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,Iceland, Ireland, Italy, Luxembourg, Malta, 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© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13806:2002 ESIST EN 13806:2002
Results of the interlaboratory tests.9Bibliography.11SIST EN 13806:2002
(HCl) = 1,15 g/ml.4.3 Nitric acid, not less than 65 % (mass fraction), of approximately
(HNO3) = 1,4 g/ml.4.4 Diluted nitric acid.Mix nitric acid (4.3) and water in a proportion of 1 + 9 parts by volume as a minimum.4.5 Reducing agent4.5.1 GeneralTin(II) chloride or sodium borohydride may be used as the reducing agent, but it is not advisable to use the tworeagents alternately. Observe the instructions of the manufacturers of the apparatus.4.5.2 Tin(II) chloride solution with a concentration of 100 g/l.Dissolve 50 g of tin(II) chloride, SnCl2 · 2H2O in approximately 100 ml of hydrochloric acid (4.2) in a 500 ml volu-metric flask and dilute to the mark with water. Prepare a fresh solution.4.5.3 Sodium borohydride solution with a concentration of 30 g/l.Dissolve 3 g of sodium borohydride together with 1 g of sodium hydroxide pellets in water and dilute to 100 ml.Prepare a fresh solution daily and, when necessary, filter it before use.The concentration by mass of the reducing agent solutions may be varied to suit the system and the relevant infor-mation provided by the manufacturer of the apparatus shall be observed.WARNING — It is essential to observe the safety instructions for working with sodium borohydride. So-dium borohydride forms hydrogen with acids and this can result in an explosive air/hydrogen mixture. Apermanent extraction system shall be provided at the point where measurements are carried out.4.6 Potassium permanganate solution with a concentration of 40 g/l.Dissolve 0,4 g of potassium permanganate solution in water and dilute to 10 ml. P
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