ISO 20884:2019

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Publicado (Edición 3, 2019)

Esta norma tiene 1 modificaciones.

ISO 20884:2019

CHF 63

Convertir Franco suizo (CHF) a tu moneda

Resumen

This document 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 30 % (V/V) fatty acid methyl esters (FAME),

— motor gasolines containing up to about 10 % (V/V) ethanol,

— synthetic fuels such as hydrotreated vegetable oil (HVO) and gas to liquid (GTL) having sulfur contents in the range of 5 mg/kg to 45 mg/kg.

Products with higher oxygen content show significant matrix effects, e.g. pure FAME used as biodiesel, nevertheless, pure FAME can be analysed when the corresponding procedures are followed (see 5.3 and 8.1).

Other products can be analysed with this test method, though precision data for products other than those mentioned have not been established for this document.

NOTE 1 Sulfur contents higher than 500 mg/kg can be determined after sample dilution, however, the precision was not established for diluted samples.

NOTE 2 For the purposes of this document, "% (m/m)" and "% (V/V)" are used to represent the mass fraction, w, and the volume fraction, φ, of a material respectively.

Informaciones generales

Estado
: Publicado

Fecha de publicación
: 2019-08

Etapa
: Norma Internacional en proceso de revisión sistemática [90.20]
Edición
: 3

Número de páginas
: 9
Comité Técnico :
ISO/TC 28

ICS :
75.080 75.160.30
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Modificaciones

Las enmiendas se emiten cuando se decide que puede ser necesario agregar nuevo material a un documento de normalización existente. También pueden incluir correcciones editoriales o técnicas que deban aplicarse al documento existente.