SIST EN 15488:2007

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Ethanol as a blending component for petrol - Determination of copper content - Graphite furnace atomic absorption spectrometric methodMHÉthanol comme base de mélange a l'essence - Détermination de la teneur en cuivre - Méthode par spectrométrie d'absorption avec four en graphiteEthanol zur Verwendung als Blendkomponente in Ottokraftstoff - Bestimmung des Kupfergehaltes - Graphitrohr-Atomabsorptions-SpektrometrieTa slovenski standard je istoveten z:EN 15488:2007SIST EN 15488:2007en75.160.20Liquid fuels71.080.60Alkoholi. EtriAlcohols. EthersICS:SLOVENSKI
STANDARDSIST EN 15488:200701-december-2007







EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15488August 2007ICS 71.080.60 English VersionEthanol as a blending component for petrol - Determination ofcopper content - Graphite furnace atomic absorptionspectrometric methodÉthanol comme base de mélange à l'essence -Détermination de la teneur en cuivre - Méthode parspectrométrie d'absorption atomique avec four en graphiteEthanol zur Verwendung als Blendkomponente inOttokraftstoff - Bestimmung des Kupfergehaltes -Graphitrohr-AtomabsorptionsspektrometrieThis European Standard was approved by CEN on 30 June 2007.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 CEN 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 CEN Management Centre has the same status as theofficial versions.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.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15488:2007: E



EN 15488:2007 (E) 2 Contents Page Foreword.3 1 Scope.4 2 Normative reference.4 3 Terms and definitions.4 4 Principle.5 5 Reagents and materials.5 6 Apparatus.5 6.1 Atomic absorption spectrometer.5 7 Samples and sampling.6 8 Preparation of blank and calibration solutions.6 8.1 Intermediate calibration solution.6 8.2 Calibration solutions.6 9 Procedure.7 9.1 Instrument preparation.7 9.2 Calibration.7 10 Sample analysis.8 11 Calculation.8 12 Expression of results.8 13 Precision.8 13.1 Repeatability.8 13.2 Reproducibility.9 14 Test report.9 Annex A (informative)
Example of thermal program of the graphite furnace.10 Bibliography.11



EN 15488:2007 (E) 3 Foreword This document (EN 15488:2007) has been prepared by Technical Committee CEN/TC 19 “Gaseous and liquid fuels, lubricants and related products of petroleum, synthetic and biological origin”, the secretariat of which is held by NEN. 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 February 2008, and conflicting national standards shall be withdrawn at the latest by February 2008. This document is based on IP 478 [1]. 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, 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.



EN 15488:2007 (E) 4 1 Scope This standard specifies a procedure for the determination of copper content in ethanol from 0,07 mg/kg to 0,20 mg/kg using graphite furnace atomic absorption spectrometry. NOTE For the purpose of this document, the terms “% (m/m)” and "% (V/V)" are used to represent the mass fraction, respectively the volume fraction of a material. WARNING — Use of this standard may involve hazardous materials, operations and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use. 2 Normative reference 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. EN ISO 3170, Petroleum liquids — Manual sampling (ISO 3170:2004) EN ISO 3696, Water for analytical laboratory use – Specification and test methods (ISO 3696:1987) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 radiant power P rate at which energy is transported in a beam of radiant energy 3.2
transmittance T ratio of the radiant power transmitted by a material to the radiant power incident upon it 3.3
absorbance A logarithm to the base 10 of the reciprocal of the transmittance NOTE Can be derived by the following equation: A = log (1/T) = -log (T) (1) 3.4 integrated absorbance Ai integrated area under the absorbance peak generated by the atomic absorption spectrometer



EN 15488:2007 (E) 5 4 Principle The graphite furnace is aligned in the optical path of the atomic absorption spectrometer. A test portion is pipetted onto the platform or at the wall of the graphite furnace. The furnace is heated in consecutive thermal stages, firstly to dry the test portion completely without spattering, then to eliminate excess sample matrix, and finally to volatilise the analyte of interest. During this final stage, the amount of light absorbed by the copper atoms is measured over a specified period. The integrated absorbance Ai, produced by the copper in the test portion, is compared to a calibration curve constructed from copper standards in ethanol solution. NOTE The second heating stage is used to eliminate as much of the sample matrix as possible before the atomization step, as non-dissociated molecular species are the most common form of interference. Spectrometers are equipped with background correction capabilities to control further possibilities of erroneous results due to molecular absorption. 5 Reagents and materials 5.1 General All reagents shall be of analytical reagent grade or of higher purity. 5.2 Ethanol, 99,8 % (m/m) mi
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