EN ISO 20884:2011
(Main)Petroleum products - Determination of sulfur content of automotive fuels - Wavelength-dispersive X-ray fluorescence spectrometry (ISO 20884:2011)
Petroleum products - Determination of sulfur content of automotive fuels - Wavelength-dispersive X-ray fluorescence spectrometry (ISO 20884:2011)
ISO 20884:2011 specifies a wavelength-dispersive X-ray fluorescence (WDXRF) test method for the determination of the sulfur content of liquid, homogeneous automotive fuels from 5 mg/kg to 500 mg/kg, which have a maximum oxygen content of 3,7 % (m/m). This product range covers diesel fuels containing up to about 10 % (V/V) fatty acid methyl ester (FAME) and motor gasolines containing up to about 10 % (V/V) ethanol.
Products with higher oxygen content show significant matrix effects, e.g. FAME used as biodiesel. Nevertheless, FAME may be analysed when the corresponding procedures are followed.
Other products may be analysed with this test method. However, precision data for products other than those mentioned have not been established for ISO 20884:2011.
Mineralölerzeugnisse - Bestimmung des Schwefelgehaltes in Kraftstoffen für Kraftfahrzeuge - Wellenlängendispersive Röntgenfluoreszenz-Spektrometrie (ISO 20884:2011)
Diese Internationale Norm legt ein wellenlängendispersives Röntgenfluoreszenzverfahren (wdRFA) für
flüssige, homogene Kraftstoffe mit Schwefelanteilen von 5 mg/kg bis 500 mg/kg und einem Sauerstoffanteil
von höchstens 3,7 % (m/m) fest. Der Anwendungsbereich gilt auch für Dieselkraftstoffe mit etwa 10 % (V/V)
Fettsäuremethylester (FAME) und für Ottokraftstoffe mit bis zu 10 % (V/V) Ethanol.
ANMERKUNG 1 Schwefelgehalte größer 500 mg/kg können nach Verdünnung bestimmt werden. Die Präzision wurde
jedoch nicht für verdünnte Proben ermittelt.
Produkte mit höherem Sauerstoffgehalt zeigen erhebliche Matrixeffekte, z. B. Biodiesel [Fettsäuremethylester
(FAME)]. Biodiesel kann trotzdem analysiert werden, wenn die entsprechenden Angaben befolgt werden
(siehe 4.3 und 7.1).
Andere Produkte können mit diesem Prüfverfahren ebenfalls untersucht werden; jedoch sind für andere als
die hier genannten Produkte keine Präzisionsangaben ermittelt worden.
ANMERKUNG 2 Für die Zwecke dieser Internationalen Norm wird zur Angabe des Massenanteils einer Substanz der
Ausdruck „% (m/m)“ und für den Volumenanteil einer Substanz der Ausdruck „% (V/V)“ verwendet.
Produits pétroliers - Détermination de la teneur en soufre des carburants pour automobiles - Spectrométrie de fluorescence de rayons X dispersive en longueur d'onde (ISO 20884:2011)
L'ISO 20884:2011 spécifie une méthode d'essai par fluorescence de rayons X dispersive en longueur d'onde (FXDLO) pour le dosage du soufre dans les carburants liquides homogènes pour automobiles entre 5 mg/kg et 500 mg/kg et dont la teneur en oxygène est au maximum de 3,7 % (m/m). Cette gamme de produits comprend les carburants diesels (gazoles) contenant jusqu'à environ 10 % (V/V) d'esters méthyliques d'acide gras (EMAG) et les essences automobiles contenant jusqu'à environ 10 % (V/V) d'éthanol.
Les produits ayant une teneur en oxygène supérieure à cette valeur présentent des effets de matrice significatifs, par exemple les EMAG utilisés comme biocarburants diesel. Ces EMAG peuvent néanmoins être analysés si les modes opératoires correspondants sont suivis.
D'autres produits peuvent être analysés avec cette méthode d'essai. Cependant, il n'a pas été établi de données de fidélité pour des produits autres que ceux mentionnés dans l'ISO 20884:2011.
Naftni proizvodi - Določevanje žvepla v gorivih za motorna vozila - Metoda z valovno disperzivno rentgensko fluorescenčno spektrometrijo (ISO 20884:2011)
Ta mednarodni standard opredeljuje metodo preskušanja z valovno disperzivno rentgensko fluorescenčno spektrometrijo (WDXRF) za določevanje žvepla v tekočih, homogenih gorivih za motorna vozila od 5 mg/kg do 500 mg/kg, ki imajo maksimalno vsebnost kisika 3,7 % (m/m). Ta paleta izdelkov zajema dizelska goriva, ki vsebujejo do 10 % (V/V) metilnih estrov maščobnih kislin (FAME) in motorni bencin, ki vsebuje do 10 % (V/V) etanola.
OPOMBA 1: Vsebnost žvepla, ki je višja kot 500 mg/kg, je mogoče določiti po razredčevanju vzorca. Vendar natančnost za razredčene vzorce ni bila ugotovljena.
Izdelki z višjo vsebnostjo kisika izkazujejo izrazite vplive matriksa, npr. FAME, ki se uporablja kot biodizel.
Kljub temu je FAME mogoče analizirati, če se sledi ustreznim postopkom (glej točki 4.3 in 7.1).
S to metodo preskušanja je mogoče analizirati druge izdelke. Vendar pa podatki o natančnosti za izdelke, razen navedenih, niso bili ugotovljeni za ta mednarodni standard.
OPOMBA 2: Za namene tega mednarodnega standarda se izraza »% (m/m)« in »% (V/V)« uporabljata za prikazovanje masnega deleža in volumskega deleža materiala v tem zaporedju.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2011
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Petroleum products - Determination of sulfur content of automotive fuels - Wavelength-
dispersive X-ray fluorescence spectrometry (ISO 20884:2011)
Mineralölerzeugnisse - Bestimmung des Schwefelgehaltes in Kraftstoffen für
Kraftfahrzeuge - Wellenlängendispersive Röntgenfluoreszenz-Spektrometrie (ISO
20884:2011)
Produits pétroliers - Détermination de la teneur en soufre des carburants pour
automobiles - Spectrométrie de fluorescence de rayons X dispersive en longueur d'onde
(ISO 20884:2011)
Ta slovenski standard je istoveten z: EN ISO 20884:2011
ICS:
75.160.20 7HNRþDJRULYD Liquid fuels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 20884
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2011
ICS 75.160.30; 75.080 Supersedes EN ISO 20884:2004
English Version
Petroleum products - Determination of sulfur content of
automotive fuels - Wavelength-dispersive X-ray fluorescence
spectrometry (ISO 20884:2011)
Produits pétroliers - Détermination de la teneur en soufre Mineralölerzeugnisse - Bestimmung des Schwefelgehaltes
des carburants pour automobiles - Spectrométrie de in Kraftstoffen für Kraftfahrzeuge - Wellenlängendispersive
fluorescence de rayons X dispersive en longueur d'onde Röntgenfluoreszenz-Spektrometrie (ISO 20884:2011)
(ISO 20884:2011)
This European Standard was approved by CEN on 14 April 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 Ref. No. EN ISO 20884:2011: E
worldwide for CEN national Members.
Contents Page
Foreword .3
Foreword
This document (EN ISO 20884:2011) has been prepared by Technical Committee ISO/TC 28 "Petroleum
products and lubricants" in collaboration 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 October 2011, and conflicting national standards shall be withdrawn at
the latest by October 2011.
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 document supersedes EN ISO 20884:2004.
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.
Endorsement notice
The text of ISO 20884:2011 has been approved by CEN as a EN ISO 20884:2011 without any modification.
INTERNATIONAL ISO
STANDARD 20884
Second edition
2011-04-15
Petroleum products — Determination of
sulfur content of automotive fuels —
Wavelength-dispersive X-ray
fluorescence spectrometry
Produits pétroliers — Détermination de la teneur en soufre des
carburants pour automobiles — Spectrométrie de fluorescence de
rayons X dispersive en longueur d'onde
Reference number
ISO 20884:2011(E)
©
ISO 2011
ISO 20884:2011(E)
© ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
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Published in Switzerland
ii © ISO 2011 – All rights reserved
ISO 20884:2011(E)
Contents Page
Foreword .iv
1 Scope.1
2 Normative references.1
3 Principle .1
4 Reagents .2
5 Apparatus.2
6 Sampling .3
7 Calibration solutions.3
8 Settings.4
9 Calibration.4
10 Procedure.5
11 Expression of results.6
12 Precision .6
13 Test report.7
Annex A (informative) Interferences and matrix effects .8
Bibliography.9
ISO 20884:2011(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 20884 was prepared by Technical Committee ISO/TC 28, Petroleum products and lubricants.
This second edition cancels and replaces the first edition (ISO 20884:2004), which has been technically
revised.
iv © ISO 2011 – All rights reserved
INTERNATIONAL STANDARD ISO 20884:2011(E)
Petroleum products — Determination of sulfur content of
automotive fuels — Wavelength-dispersive X-ray fluorescence
spectrometry
WARNING — The use of this International Standard may involve hazardous materials, operations and
equipment. This International Standard does not purport to address all of the safety problems
associated with its use. It is the responsibility of the user of this International Standard to establish
appropriate safety and health practices and determine the applicability of regulatory limitations prior
to use.
1 Scope
This International Standard specifies a wavelength-dispersive X-ray fluorescence (WDXRF) test method for
the determination of the sulfur content of liquid, homogeneous automotive fuels from 5 mg/kg to 500 mg/kg,
which have a maximum oxygen content of 3,7 % (m/m). This product range covers diesel fuels containing up
to about 10 % (V/V) fatty acid methyl esters (FAME) and motor gasolines containing up to about 10 % (V/V)
ethanol.
NOTE 1 Sulfur contents higher than 500 mg/kg can be determined after sample dilution. However, the precision was
not established for diluted samples.
Products with higher oxygen content show significant matrix effects, e.g. FAME used as biodiesel.
Nevertheless, FAME may be analysed when the corresponding procedures are followed (see 4.3 and 7.1).
Other products may be analysed with this test method. However, precision data for products other than those
mentioned have not been established for this International Standard.
NOTE 2 For the purposes of this International Standard, the terms “% (m/m)” and “% (V/V)” are used to represent the
mass fraction and the volume fraction of a material respectively.
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 3170, Petroleum liquids — Manual sampling
ISO 3171, Petroleum liquids — Automatic pipeline sampling
3 Principle
The sample under analysis is exposed in a sample cell to the primary radiation of an X-ray tube. The count
rates of the S K-L X-ray fluorescence and, where required, the count rate of the background radiation are
2,3
measured. The sulfur content of the sample is determined from a calibration curve defined for the relevant
measuring range.
ISO 20884:2011(E)
NOTE The IUPAC X-ray line notation (S K-L ) is used in this International Standard; the corresponding Siegbahn
2,3
X-ray line notation (S-Kα) is being phased out.
4 Reagents
4.1 Dibutylsulfide, of nominal sulfur content 21,92 % (m/m), or dibutyldisulfide, of nominal sulfur content
35,95 % (m/m), used as a calibrating substance for sulfur.
Care should be taken due to volatility (see Annex A).
4.2 White oil (paraffinum perliquidum), for use as a blank solution, of high purity grade, with a sulfur
content of less than 1 mg/kg. Check the blank solution prior to use with the spectrometer (5.1). A signal for
sulfur shall not be detectable.
4.3 Methyl oleate, for use as a blank solution when FAME is analysed, with a sulfur content of less than
1 mg/kg. Check the blank solution prior to use with the spectrometer (5.1). A signal for sulfur shall not be
detectable (i.e. the intensity shall be lower that the intensity equivalent to 1 mg/kg). Other oxygen-containing
and sulfur-free blank solutions, such as octanol, can also be used.
5 Apparatus
5.1 Wavelength-dispersive X-ray fluorescence spectrometer, with the capability for measuring the
count rates of the S K-L X-ray fluorescence radiation and the background radiation. Due to the inherently
2,3
low background radiation produced by instruments utilizing monochromatic radiation for excitation, it is not
mandatory to measure the background radiation when this type of instrument is used. The minimum
requirements for the spectrometer are given in Table 1.
Table 1 — Spectrometer requirements
Component Polychromatic excitation Monochromatic excitation
Anode Rhodium, scandium or chromium Rhodium, scandium, chromium o
...
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