SIST EN 16117-2:2014
(Main)Copper and copper alloys - Determination of copper content - Part 2: Electrolytic determination of copper in materials with copper content higher than 99,80 %
Copper and copper alloys - Determination of copper content - Part 2: Electrolytic determination of copper in materials with copper content higher than 99,80 %
This European Standard specifies an electrolytic method for the determination of the copper content of unalloyed copper materials with a copper content higher than 99,80 % (mass fraction) in the form of castings, wrought and unwrought products. Silver, if present, is co-deposited and is reported as copper. Approximately one-half of any selenium and tellurium present will co-deposit. Bismuth, if present, also interferes.
Kupfer und Kupferlegierungen - Bestimmung des Kupfergehaltes - Teil 2: Elektrolytische Bestimmung von Kupfer in Werkstoffen mit einem Kupfergehalt größer als 99,80 %
Diese Europäische Norm legt ein elektrolytisches Verfahren zur Bestimmung des Kupfergehaltes von unlegierten Kupferwerkstoffen mit einem Kupfergehalt größer als 99,80 % (Massenanteil) fest, die als Gussstücke und plastisch oder nicht plastisch geformte Produkte vorliegen.
Eventuell vorhandenes Silber wird mit abgeschieden und als Kupfer angegeben. Etwa die Hälfte des vorhandenen Selens und Tellurs wird ebenfalls mit abgeschieden. Bismut, falls vorhanden, interferiert ebenfalls.
Cuivre et alliages de cuivre - Détermination de la teneur en cuivre - Partie 2: Détermination par électrogravimétrie de la teneur en cuivre dans les matériaux ayant une teneur en cuivre supérieure à 99,80 %
La présente Norme européenne spécifie une méthode de détermination par électrogravimétrie de la teneur en cuivre dans les matériaux en cuivre non alliés ayant une teneur en cuivre supérieure à 99,80 % (fraction en masse), sous forme de produits non corroyés, corroyés et moulés.
Lorsque présent dans l’alliage, l’argent se co-dépose et est pris en compte en tant que cuivre. Environ la moitié de la quantité de sélénium et de tellure présents se co-dépose également. Lorsque présent, le bismuth interfère aussi.
Baker in bakrove zlitine - Določevanje bakra - 2. del: Elektrolitsko ugotavljanje bakra v materialih z deležem bakra, večjim od 99,80 %
Ta evropski standard določa elektrolitsko metodo za ugotavljanje bakra v nelegiranih materialih iz bakra v obliki ulitkov, gnetenih in negnetenih izdelkov z deležem bakra, večjim od 99,80 % (masni delež). Če je srebro prisotno, se soodloži in zabeleži kot baker. Približno polovica prisotnega selena in telurja se soodloži. Če je prisoten bizmut, tudi ta moti analizo.
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kupfer und Kupferlegierungen - Bestimmung des Kupfergehaltes - Teil 2: Elektrolytische Bestimmung von Kupfer in Werkstoffen mit einem Kupfergehalt größer als 99,80 %Cuivre et alliages de cuivre - Détermination de la teneur en cuivre - Partie 2: Détermination par électrogravimétrie de la teneur en cuivre dans les matériaux ayant une teneur en cuivre supérieure à 99,80 %Copper and copper alloys - Determination of copper content - Part 2: Electrolytic determination of copper in materials with copper content higher than 99,80 %77.120.30Baker in bakrove zlitineCopper and copper alloysICS:Ta slovenski standard je istoveten z:EN 16117-2:2012SIST EN 16117-2:2014en,fr,de01-julij-2014SIST EN 16117-2:2014SLOVENSKI
STANDARD
SIST EN 16117-2:2014
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16117-2
November 2012 ICS 77.120.30 English Version
Copper and copper alloys - Determination of copper content - Part 2: Electrolytic determination of copper in materials with copper content higher than 99,80 %
Cuivre et alliages de cuivre - Détermination de la teneur en cuivre - Partie 2 : Détermination par électrogravimétrie du cuivre dans les matériaux ayant une teneur en cuivre supérieure à 99,80 %
Kupfer und Kupferlegierungen - Bestimmung des Kupfergehaltes - Teil 2: Elektrolytische Bestimmung von Kupfer in Werkstoffen mit einem Kupfergehalt größer als 99,80 % This European Standard was approved by CEN on 20 October 2012.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC 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 translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16117-2:2012: ESIST EN 16117-2:2014
EN 16117-2:2012 (E) 2 Contents Page Foreword .31Scope .42Normative references .43Principle .44Reagents .45Apparatus .56Sampling .57Procedure .58Expression of results .69Precision .610Test report .7Annex A (normative)
Spent electrolyte — Determination of residual copper — Flame atomic absorption spectrometric method (FAAS) .8Bibliography . 11 SIST EN 16117-2:2014
EN 16117-2:2012 (E) 3 Foreword This document (EN 16117-2:2012) has been prepared by Technical Committee CEN/TC 133 “Copper and copper alloys”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2013, and conflicting national standards shall be withdrawn at the latest by May 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. Within its programme of work, Technical Committee CEN/TC 133 requested CEN/TC 133/WG 10 "Methods of analysis" to prepare the following standard: EN 16117-2, Copper and copper alloys — Determination of copper content — Part 2: Electrolytic determination of copper in materials with copper content higher than 99,80 %. This is one of two parts of the standard for the determination of the copper content of copper and copper alloys. The other part is: EN 16117-1, Copper and copper alloys — Determination of copper content — Part 1: Electrolytic determination of copper in materials with copper content less than 99,85 %. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
SIST EN 16117-2:2014
EN 16117-2:2012 (E) 4 1 Scope This European Standard specifies an electrolytic method for the determination of the copper content of unalloyed copper materials with a copper content higher than 99,80 % (mass fraction) in the form of castings, wrought and unwrought products. Silver, if present, is co-deposited and is reported as copper. Approximately one-half of any selenium and tellurium present will co-deposit. Bismuth, if present, also interferes. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1811-1, Copper and copper alloys — Selection and preparation of samples for chemical analysis — Part 1: Sampling of cast unwrought products. ISO 1811-2, Copper and copper alloys — Selection and preparation of samples for chemical analysis — Part 2: Sampling of wrought products and castings. 3 Principle Dissolution of a test portion in a nitric and sulphuric acid mixture. Electrolytic deposition of the copper on a platinum cathode of known weight with subsequent weighing of the cathode together with the electrodeposited copper. Determination of residual copper in the spent electrolyte by atomic absorption spectrometry. 4 Reagents During the analysis use only reagents of recognised analytical grade and only distilled water or water of equivalent purity. 4.1 Sulphuric acid, H2SO4 (ρ = 1,84 g/ml) 4.2 Nitric acid, HNO3 (ρ = 1,40 g/ml) 4.3 Sulphuric acid-nitric acid mixture While stirring, slowly add 300 ml of sulphuric acid (4.1) to 750 ml of water. Cool to ambient temperature. While stirring, cautiously add 210 ml of nitric acid (4.2). 4.4 Sulphamic acid, H(NH2)SO3 4.5 Sulphamic acid solution, 100 g/l H(NH2)SO3 Dissolve 10 g of sulphamic acid (4.4) in water and dilute to 100 ml. Prepare freshly before using. 4.6 Alcohol Ethanol: 95 % ± 0,2 %, methanol: min. 99,9 %, other alcohols: higher than 99,9 %. SIST EN 16117-2:2014
EN 16117-2:2012 (E) 5 5 Apparatus 5.1 Current source Preferably use a 6 V accumulator. If a rectifier is to be used, an additional buffer battery is recommended. 5.2 Electrolysis equipment 5.2.1 Platinum cathode, Winkler type1), made preferably from gauze containing approximately 400 meshes per square centimetre, woven from wire of diameter approximately 0,2 mm. The cathode shall be stiffened by doubling the gauze for about 3 mm at the top and the bottom of the cylinder or by reinforcing the gauze at the top and bottom with a platinum band or ring. The diameter of the cylinder shall be 30 mm to 50 mm and the height 40 mm to 60 mm. The stem shall be made from a platinum alloy wire such as platinum-iridium, platinum-rhodium or platinum-ruthenium, having a diameter of approximately 1,3 mm, flattened and welded the entire length of the gauze. The overall height of the cathode shall be approximately 130 mm. The cathode shall be sandblasted. 5.2.2 Spiral anode, made of platinum alloy wire of minimum diameter 1 mm, formed into a spiral of seven turns, having a height of approximately 50 mm and a diameter of 12 mm, the overall height being approximately 130 mm. The spiral section shall be sandblasted. 6 Sampling Sampling shall be carried out in accordance with ISO 1811-1 or ISO 1811-2, as appropriate. Test samples shall be in the form of fine drillings, chips or millings with a maximum thickness of 0,5 mm. 7 Procedure 7.1 Test portion Weigh (5,0 ± 0,001) g of the test sample. 7.2 Determination 7.2.1 Transfer the test portion (7.1) to a 400 ml tall-form beaker. Add 45 ml of the sulphuric acid-nitric acid mixture (4.3) by small portions and then cover with a watch glass. Cool if required to prevent the reaction from becoming violent. When the reaction has subsided, heat moderately (80 °C to 90 °C) until dissolution is complete. Continue heating at approximately 90 °C, without boiling, to completely expel the oxides of nitrogen (more than 1 h may be neces
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