SIST EN 16117-1:2011
(Main)Copper and copper alloys - Determination of copper content - Part 1: Electrolytic determination of copper in materials with copper content less than 99,85 %
Copper and copper alloys - Determination of copper content - Part 1: Electrolytic determination of copper in materials with copper content less than 99,85 %
This part of this European Standard specifies the electrolytic method for the determination of the copper content in copper materials with copper content equal to or less than 99,85 % (mass fraction) in the form of unwrought, wrought and cast products.
Silver, if present, is co-deposited and is reported as copper. Approximately one-half of any selenium and tellurium present will co-deposit. Arsenic, antimony, bismuth and tin, if present, also interfere.
Kupfer und Kupferlegierungen - Bestimmung des Kupfergehaltes - Teil 1: Elektrolytische Bestimmung von Kupfer in Werkstoffen mit einem Kupfergehalt kleiner als 99,85 %
Dieser Teil der Europäischen Norm legt ein elektrolytisches Verfahren zur Bestimmung des Kupfergehaltes in Kupferwerkstoffen mit einem Kupfergehalt kleiner als 99,85 % (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. Arsen, Antimon, Bismut und Zinn, falls vorhanden, interferieren ebenfalls.
Cuivre et alliages de cuivre - Dosage du cuivre - Partie 1: Dosage par électrogravimétrie du cuivre dans les alliages ayant une teneur en cuivre inférieure à 99,85 %
Cette partie de la présente Norme européenne spécifie une méthode de détermination par électrogravimétrie
du cuivre dans les alliages de cuivre ayant des teneurs en cuivre inférieures à 99,85 % (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 lla quantité de sélénium et du tellurium présents co-dépose également. L’arsenic, l’antimoine, le
bismuth et l’étain interfèrent aussi.
Baker in bakrove zlitine - Določevanje bakra - 1. del: Elektrolitsko določevanje bakra v materialih z deležem bakra, manjšim od 99,85 %
Ta del tega evropskega standarda določa elektrolitsko metodo za določevanje bakra v bakrenih materialih z deležem bakra, enakim ali manjšim od 99,85 % (masni delež), v obliki negnetenih, gnetenih in ulitih polizdelkov.
Če je prisotno srebro, je v obliki dodatnih nanosov in se o njem poroča kot o bakru. Približno polovica prisotnega selena in telurja je v obliki dodatnih nanosov. Če so prisotni, motnje povzročajo tudi arzen, antimon, bizmut in kositer.
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 1: Elektrolytische Bestimmung von Kupfer in Werkstoffen mit einem Kupfergehalt kleiner als 99,85 %Cuivre et alliages de cuivre - Dosage du cuivre - Partie 1: Dosage par électrogravimétrie du cuivre dans les alliages ayant une teneur en cuivre inférieure à 99,85 %Copper and copper alloys - Determination of copper content - Part 1: Electrolytic determination of copper in materials with copper content less than 99,85 %77.120.30Baker in bakrove zlitineCopper and copper alloysICS:Ta slovenski standard je istoveten z:EN 16117-1:2011SIST EN 16117-1:2011en,fr,de01-december-2011SIST EN 16117-1:2011SLOVENSKI
STANDARD
SIST EN 16117-1:2011
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16117-1
October 2011 ICS 77.120.30 English Version
Copper and copper alloys - Determination of copper content - Part 1: Electrolytic determination of copper in materials with copper content less than 99,85 %
Cuivre et alliages de cuivre - Détermination de la teneur en cuivre - Partie 1: Détermination par électrogravimétrie de la teneur en cuivre dans les alliages ayant une teneur en cuivre inférieure à 99,85 %
Kupfer und Kupferlegierungen - Bestimmung des Kupfergehaltes - Teil 1: Elektrolytische Bestimmung von Kupfer in Werkstoffen mit einem Kupfergehalt kleiner als 99,85 % This European Standard was approved by CEN on 27 August 2011.
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, 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16117-1:2011: ESIST EN 16117-1:2011
EN 16117-1:2011 (E) 2 Contents Page Foreword .31Scope .42Normative references .43Principle .44Reagents .45Apparatus .56Sampling .57Procedure .57.1Test portion .57.2Determination .58Expression of results .69Precision .610Test report .7Annex A (normative)
Spent electrolyte — Determination of residual copper — Flame atomic absorption spectrometric method (FAAS) .8A.1General .8A.2Principle .8A.3Reagents .8A.4Apparatus .9A.5Procedure .9A.6Expression of results . 10Bibliography . 12 SIST EN 16117-1:2011
EN 16117-1:2011 (E) 3 Foreword This document (EN 16117-1:2011) 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 April 2012, and conflicting national standards shall be withdrawn at the latest by April 2012. 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 16117-1, Copper and copper alloys — Determination of copper content — Part 1: Electrolytic determination of copper in materials with copper content less than 99,85 %. 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: prEN 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 %. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, 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 the United Kingdom.
SIST EN 16117-1:2011
EN 16117-1:2011 (E) 4 1 Scope This European Standard specifies an electrolytic method for the determination of the copper content in copper materials with a copper content less than 99,85 % (mass fraction) in the form of unwrought, wrought and cast products. Silver, if present, is co-deposited and is reported as copper. Approximately one-half of any selenium and tellurium present will co-deposit. Arsenic, antimony, bismuth and tin, if present, also interfere. 2 Normative references The following referenced documents are indispensable for the application of this document. 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 fluoroboric and nitric acid mixture. Electrolytic deposition of the copper on a platinum cathode of known weight. Determination of residual copper in the spent electrolyte by atomic absorption spectrometry. 4 Reagents During the analysis use only reagents of recognized analytical grade and only distilled water or water of equivalent purity. 4.1 Boric acid, H3BO3. 4.2 Boric acid solution, 40 g/l H3BO3. Dissolve 40 g of boric acid (4.1) in a 1 000 ml one-mark flask with water, dilute to the mark with water and mix. 4.3 Hydrofluoric acid, HF (ρ = 1,13 g/ml). 4.4 Nitric acid, HNO3 (ρ = 1,40 g/ml). 4.5 Nitric acid solution, 1 + 1. Add 500 ml of nitric acid (4.4) to 500 ml of water. 4.6 Ammonia solution, NH4OH (ρ ≈ 0,91 g/ml). 4.7 Hydrochloric acid, HCl, (ρ = 1,19 g/ml). 4.8 Alcohol. Ethanol: 95 % ± 0,2 %, methanol: min. 99,9 %, other alcohols: higher than 99,9 %. 4.9 Hydrogen Peroxide, H2O2 (30 % (mass fraction) solution, ρ = 1,2 g/ml). SIST EN 16117-1:2011
EN 16117-1:2011 (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. In the case of an analysis of alloys containing lead, gauze anodes shall be used. 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 (2,5 ± 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 15 ml of the boric acid solution (4.2), 2 ml of the hydrofluoric acid (4.3) and 30 ml of the nitric acid solution (4.5). Cover with a watch glass and allow to stand until the reaction has nearly ceased. 7.2.2 Wash
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