EN 15484:2007
(Main)Ethanol as a blending component for petrol - Determination of inorganic chloride - Potentiometric method
Ethanol as a blending component for petrol - Determination of inorganic chloride - Potentiometric method
This standard specifies a potentiometric method for the determination of inorganic chloride content in ethanol from 4 mg/l to 30 mg/l. The chloride content is determined in aqueous solution after dissolution of the evaporation residue of the ethanol sample.
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.
NOTE For the purposes of this document, the terms “% (m/m)” and “% (V/V)” are used to represent respectively the mass fraction and the volume fraction.
Ethanol zur Verwendung als Blendkomponente in Ottokraftstoff - Bestimmung des Gehalts an anorganischen Chloriden aus dem Eindampfrückstand - Potentiometrisches Verfahren
Diese Norm legt ein Prüfverfahren für die Bestimmung des anorganischen Chloridgehaltes in Ethanol im Bereich von 4 mg/l bis 30 mg/l fest.
WARNUNG Die Anwendung dieser Norm kann möglicherweise den Einsatz gefährlicher Materialien, Geräte oder Arbeitsschritte erfordern. Dieses Dokument gibt nicht vor, alle möglicherweise bei seiner Anwendung auftretenden Sicherheitsprobleme anzusprechen. Es liegt in der Verantwortung des Anwenders, vor der Anwendung dieser Norm zutreffende Verhaltensregeln zur Sicherheit und Gesundheit festzulegen und deren Übereinstimmung mit den Bestimmungen aller europäischen und nationalen Regelungen sicherzustellen.
Éthanol comme base de mélange à l'essence - Dosage des chlorures minéraux - Méthode potentiométrique
La présente norme spécifie une méthode potentiométrique de détection de la teneur en chlorures minéraux dans l’éthanol, pour des teneurs comprises entre 4 mg/l et 30 mg/l. La teneur en chlorure est déterminée en solution aqueuse après la dissolution du résidu d’évaporation de l’échantillon d’éthanol.
AVERTISSEMENT L'utilisation de la présente Norme européenne peut impliquer l'intervention de produits, d'opérations et d'équipements à caractère dangereux. La présente norme européenne n'est pas censée aborder tous les problèmes de sécurité concernés par son usage. Il est de la responsabilité de l'utilisateur de consulter et d'établir des règles de sécurité et d'hygiène appropriées et de déterminer l'applicabilité des restrictions réglementaires avant utilisation.
NOTE Pour les besoins de la présente Norme européenne, les termes « % (m/m) » et « % (V/V) » sont utilisés pour représenter respectivement la fraction massique et la fraction volumique.
Etanol kot komponenta za dodajanje motornemu bencinu – Določevanje anorganskega klorida – Potenciometrijska metoda
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Ethanol as a blending component for petrol - Determination of inorganic chloride - Potentiometric methodMHEthanol comme base de mélange a l'essence - Dosage du chlorure inorganique - Méthode potentiométriqueEthanol zur Verwendung als Blendkomponente in Ottokraftstoff - Bestimmung des gehalts an anorganischen Chloriden aus dem Eindampfrückstand - Potentiometrisches VerfahrenTa slovenski standard je istoveten z:EN 15484:2007SIST EN 15484:2007en75.160.20Liquid fuels71.080.60Alkoholi. EtriAlcohols. EthersICS:SLOVENSKI
STANDARDSIST EN 15484:200701-december-2007
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15484August 2007ICS 71.080.60 English VersionEthanol as a blending component for petrol - Determination ofinorganic chloride - Potentiometric methodEthanol comme base de mélange à l'essence - Dosage duchlorure minéral - Méthode potentiométriqueEthanol zur Verwendung als Blendkomponente inOttokraftstoff - Bestimmung des Gehalts an anorganischenChloriden aus dem Eindampfrückstand -Potentiometrisches VerfahrenThis 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 15484:2007: E
Measurement example.10 Annex B (informative)
Interferences.11 B.1 Introduction.11 B.2 Other halogens.11 B.3 Oxidizing agents.11 B.4 Ammonium and iron (III) salts.11 B.5 Cyanides, thiocyanates and sulphides.11 Bibliography.12
5.7.2 Reference electrodes. 5.7.2.1 Calomel electrode, fitted with a reservoir filled with saturated potassium chloride solution, or
5.7.2.2 Double junction silver/silver chloride electrode. The outer electrolyte must be saturated potassium nitrate solution (4.3), the inner electrolyte may be potassium chloride 3 mol/l or saturated potassium nitrate (4.3). 5.7.3 Bridge, containing saturated potassium nitrate solution (4.3), to be connected to the calomel electrode (5.7.2.1) and fitted with porous diaphragms at the ends. 5.7.4 Measuring electrodes, being either 5.7.4.1 Silver electrode, or 5.7.4.2 Chloride or silver ion-selective electrode. 5.8 One-mark flasks, 25 ml volume. 5.9 Magnetic stirrer, with a polytetrafluorethylene (PFTE)-coated rod. 5.10 Burettes, with fine point tip, graduated in 0,02 ml or 0,01 ml divisions. 6 Samples and sampling Unless otherwise specified, laboratory samples shall be obtained by the procedures described in EN ISO 3170. High density polyethylene containers shall be used. The containers should be carefully cleaned and rinsed with pure water before use to avoid contamination.
Samples should be analysed as soon as possible after removal from bulk supplies, to prevent loss of chloride.
7.2 Preparation of a 5,00 ml standard solution 7.2.1 Place the blank test solution in a beaker of suitable capacity. Add, using one of the burettes (5.10), 5,00 ml of the potassium chloride solution (4.7). 7.2.2 Add a quantity of the acetone (4.1) to obtain a ratio of acetone to aqueous solution preferably equal to 80/10 (V/V) but, in any case, not lower than 50/50 (V/V). 7.3 Titration Introduce into the beaker a magnetic stirrer rod (5.9), place the beaker on the stirrer and set it in motion. Introduce in the solution the measuring electrode (5.7.4) and the reference electrode (5.7.2). If, however, a calomel electrode (5.7.2.1) is used, introduce one end of the bridge (5.7.3) instead of the reference electrode and immerse the other end in a beaker of water containing the calomel electrode. Connect the electrodes to the potentiometer (5.7.1) and record the initial value of the potential, after having checked the zero setting of the instruments. Execute the titration by adding silver nitrate solution (4.5) in successive increments of
0,1 ml each. After each addition, wait for the potential to reach the steady value.
In the first two columns of a table, note the successive volumes added and the corresponding potentials.
In a third column, note the successive increments (∆1E) of the potential E.
In a fourth column, note the differences (∆2E), positive or negative, between the successive increments (∆1E) of the potential E.
The end of the titration corresponds to the addition of the 0,1 ml (V1) of the silver nitrate solution, which gives the maximum value of ∆1E.
The exact volume (Veq), in ml, of silver nitrate solution (4.5) corresponding to the end of
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