CEN/TS 15703-1:2009

SLOVENSKI STANDARD
01-julij-2009
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Copper and copper alloys - Determination of manganese content - Part 1:
Spectrophotometric method
Kupfer und Kupferlegierungen - Bestimmung des Mangangehaltes - Teil 1:
Spektrophotometrisches Verfahren
Cuivre et alliages de cuivre - Dosage du manganese - Partie 1 : Méthode
spectrophotométrique
Ta slovenski standard je istoveten z: CEN/TS 15703-1:2009
ICS:
77.120.30 Baker in bakrove zlitine Copper and copper alloys
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CEN/TS 15703-1
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
April 2009
ICS 77.040.30; 77.120.30
English Version
Copper and copper alloys - Determination of manganese
content - Part 1: Spectrophotometric method
Cuivre et alliages de cuivre - Dosage du manganèse - Kupfer und Kupferlegierungen - Bestimmung des
Partie 1: Méthode spectrophotométrique Mangangehaltes - Teil 1: Spektrophotometrisches
Verfahren
This Technical Specification (CEN/TS) was approved by CEN on 1 March 2009 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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.
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EUROPÄISCHES KOMITEE FÜR NORMUNG
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© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 15703-1:2009: E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Principle .4
4 Reagents and materials .4
5 Apparatus .6
6 Sampling .6
7 Procedure .6
8 Expression of results .8
9 Precision .9
10 Test report .9

Foreword
This document (CEN/TS 15703-1:2009) has been prepared by Technical Committee CEN/TC 133 “Copper
and copper alloys”, the secretariat of which is held by DIN.
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.
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:
 prEN 15703-2, Copper and copper alloys — Determination of manganese content — Part 2: Flame
atomic absorption spectrometric method (FAAS)
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, 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.
1 Scope
This part of this Technical Specification specifies a spectrophotometric method for the determination of the
manganese content of copper and copper alloys in the form of castings or unwrought or wrought products.
The method is applicable to products having manganese mass fractions between 0,025 % and 6,25 %.
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 fluoroboric-nitric acid mixture. Oxidation of manganese to permanganic acid by
potassium periodate. Spectrophotometric determination in comparison with a background colour prepared by
selective reduction of permanganic acid by sodium nitrite.
4 Reagents and materials
During the analysis, use only reagents of recognized analytical grade and only distilled water or water of
equivalent purity.
4.1 Boric acid, H BO (40 g/l solution)
3 3
4.2 Nitric acid, HNO (ρ = 1,40 g/ml)
4.3 Nitric acid solution (1 + 3)
Add 25 ml of nitric acid (4.2) to 75 ml of water.
4.4 Hydrofluoric acid, HF 40 % (ρ = 1,14 g/ml)
WARNING — Hydrofluoric acid is a hazardous substance. Care shall be taken and it shall be used
under an efficient fume hood.
4.5 Sulphuric acid, H SO (ρ = 1,84 g/ml)
2 4
4.6 Sulphuric acid solution (1 + 3)
Add 25 ml of sulphuric acid (4.5) to 75 ml of water.
4.7 Potassium periodate, KIO crystals
4.8 Potassium periodate solution, KIO 50 g/l
Dissolve 5 g of potassium periodate (4.7) in 100 ml of nitric acid solution (4.3).
4.9 Sodium nitrite, NaNO solution, 20 g/l
Dissolve 2,0 g of sodium nitrite in water. Transfer this solution into a 100 ml volumetric flask. Make up to
100 ml and mix. The solution shall be freshly prepared.
4.10 Fluoroboric-nitric acid mixture
Using a polypropylene stirrer in a 1 000 ml polypropylene tall form beaker, mix well:
a) 150 ml of water;
b) 300 ml of boric acid solution (4.1);
c) 50 ml of nitric acid (4.2);
d) 30 ml of hydrofluoric acid (4.4).
4.11 Dilution solution
To 1 000 ml of boric acid solution (4.1) add 5,5 ml of sulphuric acid (4.5). Bring to the boil and add a few
crystals of potassium periodate (4.7). Cool and transfer the solution into a stoppered 1 000 ml conical flask.
4.12 Manganese stoc
...