EN ISO 20884:2004
(Main)Petroleum products - Determination of sulfur content of automotive fuels - Wavelength-dispersive X-ray fluorescence spectrometry (ISO 20884:2004)
Petroleum products - Determination of sulfur content of automotive fuels - Wavelength-dispersive X-ray fluorescence spectrometry (ISO 20884:2004)
ISO 20884:2004 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 2,7 % (m/m). This product range covers diesel fuels containing up to 5 % (V/V) fatty acid methyl ester (FAME) and motor gasolines.
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 20884:2004.
Mineralölerzeugnisse - Bestimmung des Schwefelgehaltes in Kraftstoffen für Kraftfahrzeuge - Wellenlängendispersive Röntgenfluoreszenz-Spektrometrie (ISO 20884:2004)
Diese Europäische Norm legt die wesentlichen Sicherheits-, Gesundheitsschutz- und Ergonomiean-forderungen an fahrbare Abfallsammelbehälter nach EN 840-1 bis EN 840-4 fest; sie gilt nicht für Behälter für gefährliche Abfälle.
Produits pétroliers - Détermination de la teneur en soufre des carburants pour automobiles - Spectrométrie de fluorescence de rayons X dispersive en longueur d'onde (ISO 20884:2004)
L'ISO 20884:2004 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 2,7 % (m/m). Cette gamme de produits comprend les carburants diesels (gazoles) contenant jusqu'à 5 % (V/V) d'esters méthyliques d'acide gras (EMAG) et les essences automobiles.
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 tout de même 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 20884:2004.
Naftni proizvodi - Določevanje žvepla v gorivih za motorna vozila - Metoda z valovno disperzivno rentgensko fluorescenčno spektrometrijo (ISO 20884:2004)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2004
1DIWQLSURL]YRGL'RORþHYDQMHåYHSODYJRULYLK]DPRWRUQDYR]LOD0HWRGD]
YDORYQRGLVSHU]LYQRUHQWJHQVNRIOXRUHVFHQþQRVSHNWURPHWULMR ,62
Petroleum products - Determination of sulfur content of automotive fuels - Wavelength-
dispersive X-ray fluorescence spectrometry (ISO 20884:2004)
Mineralölerzeugnisse - Bestimmung des Schwefelgehaltes in Kraftstoffen für
Kraftfahrzeuge - Wellenlängendispersive Röntgenfluoreszenz-Spektrometrie (ISO
20884:2004)
Produits pétroliers - Détermination de la teneur en soufre des carburants pour
automobiles - Spectrométrie de fluorescence de rayons X dispersive en longueur d'onde
(ISO 20884:2004)
Ta slovenski standard je istoveten z: EN ISO 20884:2004
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
March 2004
ICS 75.080; 75.160.30
English version
Petroleum products - Determination of sulfur content of
automotive fuels - Wavelength-dispersive X-ray fluorescence
spectrometry (ISO 20884:2004)
Produits pétroliers - Détermination de la teneur en soufre Mineralölerzeugnisse - Bestimmung niedriger
des carburants pour automobiles - Spectrométrie de Schwefelgehalte in Automobilkraftstoffen -
fluorescence de rayons X dispersive en longueur d'onde Wellenlängendispersive Röntgenfluoreszenz-Spektrometrie
(ISO 20884:2004) (ISO 20884:2004)
This European Standard was approved by CEN on 1 March 2004.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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EUROPÄISCHES KOMITEE FÜR NORMUNG
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© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 20884:2004: E
worldwide for CEN national Members.
Foreword
This document (EN ISO 20884:2004) has been prepared by Technical Committee ISO/TC 28
"Petroleum products and lubricants" in collaboration with Technical Committee CEN/TC 19
"Petroleum products, lubricants and related products", 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 September 2004, and conflicting national
standards shall be withdrawn at the latest by September 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,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Endorsement notice
The text of ISO 20884:2004 has been approved by CEN as EN ISO 20884:2004 without any
modifications.
INTERNATIONAL ISO
STANDARD 20884
First edition
2004-03-15
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 20884:2004(E)
©
ISO 2004
ISO 20884:2004(E)
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ii © ISO 2004 – All rights reserved
ISO 20884:2004(E)
Contents Page
Foreword. iv
1 Scope. 1
2 Normative references . 1
3 Principle . 1
4 Reagents . 2
5 Apparatus. 2
6 Sampling . 2
7 Calibration solutions . 2
8 Settings . 4
9 Calibration. 4
10 Procedure. 5
11 Expression of results. 5
12 Precision . 6
13 Test report. 6
Annex A (informative) Interferences and matrix effects. 7
Bibliography . 8
ISO 20884:2004(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.
iv © ISO 2004 – All rights reserved
INTERNATIONAL STANDARD ISO 20884:2004(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 2,7 % (m/m). This product range covers diesel fuels containing up
to 5 % (V/V) fatty acid methyl ester (FAME) and motor gasolines.
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).
For further details due to matrix effects and interferences, see Annex A.
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 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 3170:2004, Petroleum liquids — Manual sampling
ISO 3171:1988, 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-Kα X-ray fluorescence and the count rate of the background radiation are measured. The sulfur
content of the sample is determined from a calibration curve defined for the relevant measuring range.
NOTE Whilst the Siegbahn X-ray line notation (S-Kα) is used in this International Standard, the corresponding IUPAC
X-ray line notation is S K-L .
2,3
ISO 20884:2004(E)
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 to 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 < 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 < 1 mg/kg.
Check the blank solution prior to use with the spectrometer (5.1). A signal for sulfur shall not be detectable.
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-Kα X-ray fluorescence radiation and the background radiation. The minimum requirements for
the spectrometer are given in Table 1.
Table 1 — Spectrometer requirements
Component Requirement Recommendations
Anode Rhodium, scandium or chromium
a)
Voltage No less than 30 kV 30 kV
a)
Current No less than 50 mA 100 mA
Collimator Coarse
Analysing crystal Germanium, pentaerythrite or graphite Germanium
Optical path Helium
b)
Sample cup window Polyester film, sulfur-free, 4 µm maximum Polyester film 3,5 µm
Detector Proportional counter with pulse-height analyser
a
Lower-power systems may be used, provided that these have been validated to meet the precision requirements specified in
Clause 12.
b
Other sample window materials with the same or better transparency, purity and stability, can also be used.
5.2 Analytical balance, capable of weighing to
...
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