SIST EN 15703-2:2015
(Main)Copper and copper alloys - Determination of manganese content - Part 2: Flame atomic absorption spectrometric method (FAAS)
Copper and copper alloys - Determination of manganese content - Part 2: Flame atomic absorption spectrometric method (FAAS)
This European Standard specifies a flame atomic absorption spectrometric method (FAAS) for the determination of the manganese content of copper and copper alloys in the form of unwrought, wrought and cast products.
The method is applicable to products having manganese mass fractions between 0,001 0 % and 6,0 %.
Kupfer und Kupferlegierungen - Bestimmung des Mangangehaltes - Teil 2: Flammenatomabsorptionsspektrometrisches Verfahren (FAAS)
Diese Europäische Norm legt ein flammenatomabsorptionsspektrometrisches Verfahren (FAAS) für die Bestimmung des Mangangehaltes in Kupfer und Kupferlegierungen fest, die als Gussstücke oder als plastisch oder nicht plastisch geformte Produkte vorliegen.
Das Verfahren ist für Produkte mit Mangan Massenanteilen zwischen 0,001 0 % und 6,0 % anwendbar.
Cuivre et alliages de cuivre - Détermination de manganèse - Partie 2: Méthode par spectrométrie d'absorption atomique dans la flamme (SAAF)
La présente Norme européenne spécifie une méthode par spectrométrie d'absorption atomique dans la flamme (FAAS) pour la détermination de la teneur en manganèse dans le cuivre et les alliages de cuivre sous la forme de produits non corroyés , corroyés et moulés.
Cette méthode est applicable aux produits ayant des teneurs en manganèse comprises entre 0,001 0 % et 6,0 %.
Baker in bakrove zlitine - Določevanje mangana - 2. del: Metoda s plamensko atomsko absorpcijsko spektrometrijo (FAAS)
Ta evropski standard določa metodo s plamensko atomsko absorpcijsko spektrometrijo (FAAS) za določevanje mangana v bakru in bakrovih zlitinah v negnetenih, gnetenih in ulitih izdelkih.
Metoda se uporablja za izdelke, ki vsebujejo od 0,001 % do 6,0 % masnih deležev mangana.
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kupfer und Kupferlegierungen - Bestimmung des Mangangehaltes - Teil 2: Flammenatomabsorptionsspektrometrisches Verfahren (FAAS)Cuivre et alliages de cuivre - Détermination de manganèse - Partie 2: Méthode par spectrométrie d'absorption atomique dans la flamme (SAAF)Copper and copper alloys - Determination of manganese content - Part 2: Flame atomic absorption spectrometric method (FAAS)77.120.30Baker in bakrove zlitineCopper and copper alloys77.040.30Kemijska analiza kovinChemical analysis of metalsICS:Ta slovenski standard je istoveten z:EN 15703-2:2014SIST EN 15703-2:2015en,fr,de01-marec-2015SIST EN 15703-2:2015SLOVENSKI
STANDARD
SIST EN 15703-2:2015
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15703-2
December 2014 ICS 77.040.30; 77.120.30 English Version
Copper and copper alloys - Determination of manganese content - Part 2: Flame atomic absorption spectrometric method (FAAS) Cuivre et alliages de cuivre - Détermination de manganèse - Partie 2: Méthode par spectrométrie d'absorption atomique dans la flamme (SAAF)
Kupfer und Kupferlegierungen - Bestimmung des Mangangehaltes - Teil 2: Flammenatomabsorptionsspektrometrisches Verfahren (FAAS) This European Standard was approved by CEN on 8 November 2014.
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
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15703-2:2014 ESIST EN 15703-2:2015
EN 15703-2:2014 (E) 2 Contents Page Foreword .3 1 Scope .4 2 Normative references .4 3 Principle .4 4 Reagents .4 4.1 H = 1,19 g/ml) .4 4.2 Nitric acid, HNO3
= 1,40 g/ml) .4 4.3 Hydrofluori = 1,13 g/ml) .4 4.4 Nitric acid solution, 1 + 1 .4 4.5 Lanthanum(III) chloride solution, 100 g/l .4 4.6 Sulphuric acid, H2SO4
= 1,84 g/ml) .4 4.7 Sulphuric acid solution, 1 + 9 .5 4.8 Manganese stock solution, 1,0 g/l Mn .5 4.9 Manganese standard solution, 0,10 g/l .5 4.10 Manganese standard solution, 0,010 g/l .5 4.11 Copper matrix solution, 20 g/l Cu .5 4.12 Copper matrix solution, 2 g/l Cu .5 5 Apparatus .5 5.1 Atomic absorption spectrometer, fitted with an air/acetylene burner .5 5.2 Manganese hollow-cathode lamp .6 6 Sampling .6 7 Procedure .6 7.1 Preparation of the test portion solution .6 7.2 Blank test .7 7.3 Check test .7 7.4 Establishment of the calibration curve .7 7.5 Determination . 10 8 Expression of results . 10 8.1 Use of the calibration curve . 10 8.2 Use of the bracketing method . 11 9 Precision . 12 10 Test report . 13 Bibliography . 14
SIST EN 15703-2:2015
EN 15703-2:2014 (E) 3 Foreword This document (EN 15703-2:2014) 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 June 2015 and conflicting national standards shall be withdrawn at the latest by June 2015. 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 15703-2, Copper and copper alloys — Determination of manganese content — Part 2: Flame atomic absorption spectrometric method (FAAS) This is one of two Parts of the standard/Technical Specification for the determination of manganese content in copper and copper alloys. The other Part is: CEN/TS 15703-1, Copper and copper alloys — Determination of manganese content — Part 1: 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, 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 15703-2:2015
EN 15703-2:2014 (E) 4 1 Scope This European Standard specifies a flame atomic absorption spectrometric method (FAAS) for the determination of the manganese content of copper and copper alloys in the form of unwrought, wrought and cast products. The method is applicable to products having manganese mass fractions between 0,001 0 % and 6,0 %. 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 hydrochloric acid and nitric acid followed, after suitable dilution and the addition of lanthanum chloride to mask the effect of interfering ions, by aspiration into an air/acetylene flame of an atomic absorption spectrometer. Measurement of the absorption of the 279,5 nm or 403,1 nm line emitted by a manganese hollow-cathode lamp. 4 Reagents During the analysis, use only reagents of recognized analytical grade and only distilled water or water of equivalent purity. 4.1 Hydrochloric acid, HCl ( = 1,19 g/ml) 4.2 Nitric acid, HNO3
= 1,40 g/ml) 4.3 Hydrofluoric acid = 1,13 g/ml) WARNING — Hydrofluoric acid is extremely irritating and corrosive to skin and mucous membranes producing severe skin burns which are slow to heal. In the case of contact with skin, wash well with water, apply a topical gel containing 2,5 % (mass fraction) calcium gluconate, and seek immediate medical treatment. 4.4 Nitric acid solution, 1 + 1 Add 500 ml of nitric acid (4.2) to 500 ml of water. 4.5 Lanthanum(III) chloride solution, 100 g/l Dissolve 100 g of lanthanum(III) chloride (LaCl3 · 7H2O) in a 600 ml beaker with water and transfer the solution into a 1 000 ml one-mark volumetric flask. Dilute to the mark with water and mix well. 4.6 Sulphuric acid, H2SO4 ( = 1,84 g/ml) SIST EN 15703-2:2015
EN 15703-2:2014 (E) 5 4.7 Sulphuric acid solution, 1 + 9 Add 20 ml of sulphuric acid (4.6) in 180 ml water. 4.8 Manganese stock solution, 1,0 g/l Mn 4.8.1 Cleaning of manganese metal Transfer several grams of electrolytic manganese (purity > 99,9 %) into a 250 ml beaker containing about 150 ml of sulphuric acid solution (4.7). Stir, then allow the manganese to settle for several minutes. Decant and discard the sulphuric acid solution. Rinse several times with water and finally with acetone. Dry the metal for about 2 min at 100°C and cool in a desiccator. 4.8.2 Preparation of stock solution Weigh, (1 ± 0,001) g, of manganese cleaned as in 4.8.1 and transfer it into a 250 ml beaker. Add 20 ml of hydrochloric acid (4.1) and 20 ml of the nitric acid solution (4.4). Cover with a watch glass and, if necessary, heat gently to assist dissolution. When dissolution is complete, allow to cool and transfer the solution quantitatively into a 1 000 ml one-mark volumetric flask, dilute to the mark with water and mix well. 1 ml of this solution contains 1,0 mg of Mn. 4.9 Manganese standard solution, 0,10 g/l Transfer 20,0 ml of manganese stock solution (4.8) into a 200 ml one-mark volumetric flask. Dilute to the mark with water and mix well. Prepare this solution immediately prior to use. 1 ml of this solution contains 0,10 mg of Mn. 4.10 Manganese standard solution, 0,010 g/l Transfer 5,0 ml of manganese stock solution (4.8) to a 500 ml one-mark volumetric flask. Dilute to the mark with water and mix well. Prepare this solution immediately prior to use. 1 ml of this solution contains 0,010 mg of Mn. 4.11 Copper matrix solution, 20 g/l Cu Transfer (10 ± 0,01) g of manganese-free copper (Cu ≥ 99,95 %) into a 600 ml beaker. Add 100 ml of hydrochloric acid (4.1) and, cautiously, 100 ml of the nitric acid solution (4.4). Cover with a watch glass and heat gently until the copper has been completely dissolved, then heat up to the boiling point until the nitrous fumes have been expelled. Allow to cool and transfer the solution quantitatively into a 500 ml one-mark volumetric flask, dilute to the mark with water and mix well. 4.12 Copper matrix solution, 2 g/l Cu Transfer 50,0 ml of the copper matrix solution (4.11) into a 500 ml one-mark volumetric flask. Add 90 ml of hydrochloric acid (4.1) and 90 ml of the nitric acid solution (4.4). Dilute to the mark with water and mix well. 5 Apparatus 5.1 Atomic absorption spectrometer, fitted with an air/acetylene burner SIST EN 15703-2:2015
EN 15703-2:2014 (E) 6 5.2 Manganese hollow-cathode lamp 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 Preparation of the test portion solution 7.1.1 Test portion Weigh (1 ± 0,001) g of the test sample. 7.1.2 Test portion solution Transfer the test portion (7.1.1) into a 250 ml beaker. Add 10 ml of hydrochloric acid (4.1) and 10 ml of the nitric acid solution (4.4). Cover with a watch glass and heat gently until the test portion is completely dissolved. Allow to cool. If undissolved matter remains, indicating the presence of silicon, filter the solution. Place the filter and retained residues in a platinum
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