EN 15487:2007

Ethanol as a blending component for petrol - Determination of phosphorus content - Ammonium molybdate spectrometric method

This standard specifies a procedure for the determination of phosphorus content measured as orthophosphate, in ethanol from 0,15 mg/l to 1,50 mg/l by ammonium molybdate spectrometric method. The phosphorus 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.

Ethanol zur Verwendung als Blendkomponente in Ottokraftstoff - Bestimmung des Phosphorgehaltes - Spektrometrisches Verfahren mit Ammoniummolybdat

Diese Europäische Norm legt ein Verfahren zur Bestimmung des Phosphorgehalts in Ethanol in einem Bereich von 0,15 mg/l bis 1,50 mg/l fest, bei dem Phosphor als Phosphat spektralphotometrisch mit Ammoniummolybdat bestimmt wird.
WARNUNG  Die Anwender dieses Dokuments sollten grundsätzlich mit der üblichen Laborpraxis vertraut sein. Dieses Dokument berücksichtigt nicht alle möglicherweise bei seiner Anwendung auftretenden Sicherheitsprobleme. Es liegt in der Verantwortung des Anwenders, 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 - Détermination de la teneur en phosphore - Méthode spectrométrique au molybdate d'ammonium

La présente Norme européenne prescrit une méthode pour déterminer la teneur en phosphore dans l’éthanol, exprimée en masse d’orthophosphate, pour des teneurs comprises entre 0,15 mg/l et 1,50 mg/l, par spectrométrie au molybdate d’ammonium. La teneur en phosphore est déterminée en solution aqueuse après 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.

Etanol kot komponenta za dodajanje motornemu bencinu - Določevanje vsebnosti fosforja - Spektrometrijska metoda z amonijevim molibdatom

General Information

• Status: Published
• Publication Date: 21-Aug-2007
• Withdrawal Date: 28-Feb-2008
• ICS: 71.080.60 - Alcohols. Ethers
• ICS: 75.160.20 - Liquid fuels
• Technical Committee: CEN/TC 19 - Petroleum products, lubricants and related products
• Drafting Committee: CEN/TC 19/WG 27 - Elemental analysis of petroleum and related products
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 23-Mar-2012
• Completion Date: 23-Mar-2012
• Directive: 98/70/EC - Quality of petrol and diesel fuels (Dir. 93/12/EEC amendment)
• Mandate: M/344 - Mandate to CEN on Ethanol as an oxygen extender to gasoline
• Ref Project: SIST EN 15487:2007 - Ethanol as a blending component for petrol - Determination of phosphorus content - Ammonium molybdate spectrometric method

Overview

EN 15487:2007 (CEN) specifies a laboratory procedure for the determination of phosphorus (as orthophosphate) in ethanol used as a blending component for petrol. The method uses the ammonium molybdate spectrometric reaction (formation of molybdenum blue) and covers a measurement range of 0.15 mg/L to 1.50 mg/L P. Results are reported in mg/L to the nearest 0.01 mg/L. WARNING: the method involves hazardous acids and reagents; users must implement appropriate safety and regulatory controls.

Key topics and technical requirements

• Principle: Evaporate the ethanol sample, dissolve the dry residue in water, form an antimony phosphomolybdate complex which is reduced by ascorbic acid to a molybdenum blue complex and measured spectrometrically at 880 nm.
• Measurement range: 0.15–1.50 mg/L phosphorus (as orthophosphate).
• Calibration: Multi-point calibration with orthophosphate standards (typical calibration points up to about 1.6 mg/L). Linear regression (absorbance vs mg/L) yields slope (a) and intercept (b) used to calculate sample concentration.
• Reagents: analytical grade reagents including ammonium heptamolybdate (acid molybdate reagent), antimony potassium tartrate, ascorbic acid, sulphuric and hydrochloric acids, sodium hydroxide, and orthophosphate stock/working standards.
• Apparatus: UV/Vis spectrometer capable of 880 nm with 10 mm cells, water bath, evaporating dishes, oven at 105 ± 2 °C, volumetric glassware. Glassware must be phosphate-free and cleaned to avoid contamination.
• Sample handling: Use HDPE containers, follow EN ISO 3170 sampling where applicable, analyse promptly to avoid losses, and avoid phosphate-containing detergents.
• Precision: Repeatability r = 0.03·X + 0.02 mg/L; reproducibility R = 0.09·X + 0.06 mg/L (X = average mg/L).

Applications and users

• Quality control in fuel laboratories, ethanol production plants and blending facilities to verify phosphorus levels in ethanol intended for petrol blending.
• Regulatory compliance testing where phosphorus limits affect engine performance, emission control systems, or fuel certification.
• Analytical and research labs monitoring contamination sources or process control (e.g., tracking phosphorus introduced during production, storage, or handling).
• Refiners and fuel additive manufacturers assessing feedstock compatibility with downstream catalysts and vehicle emission systems.

Related standards and references

• EN ISO 6878: Water quality - Determination of phosphorus - Ammonium molybdate spectrometric method (basis for reagent chemistry).
• EN ISO 3170: Petroleum liquids - Manual sampling (sampling guidance).
• EN ISO 3696: Water for analytical laboratory use.
• EN ISO 4259: Precision data for test methods.
• EU Regulation references (method origins for dry residue procedures).

Keywords: EN 15487:2007, ethanol phosphorus determination, ammonium molybdate spectrometric method, phosphorus in ethanol, ethanol fuel blending, orthophosphate analysis, spectrometry 880 nm.

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 phosphorus content - Ammonium molybdate spectrometric methodÉthanol comme base de mélange a l'essence - Détermination de la teneur en phosphore - Méthode spectrométrique au molybdate d'ammoniumEthanol zur Verwendung als Blendkomponente in Ottokraftstoff - Bestimmung des Phosphorgehaltes - Spektrometrisches Verfahren mit AmmoniummolybdatTa slovenski standard je istoveten z:EN 15487:2007SIST EN 15487:2007en75.160.20Liquid fuels71.080.60Alkoholi. EtriAlcohols. EthersICS:SLOVENSKI
STANDARDSIST EN 15487:200701-december-2007

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15487August 2007ICS 71.080.60 English VersionEthanol as a blending component for petrol - Determination ofphosphorus content - Ammonium molybdate spectrometricmethodÉthanol comme base de mélange à l'essence -Détermination de la teneur en phosphore - Méthodespectrométrique au molybdate d'ammoniumEthanol zur Verwendung als Blendkomponente inOttokraftstoff - Bestimmung des Phosphorgehaltes -Spektrometrisches Verfahren mit AmmoniummolybdatThis 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 15487:2007: E
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