Inorganic fertilizers - Determination of extracted phosphorus P2O5

This document specifies a method for the determination of phosphorus in fertilizer extracts.
The method is applicable to all extracts of fertilizers for the determination of the different forms of phosphorus as phosphorus soluble in mineral acids, water-soluble phosphorus, phosphorus soluble in solutions of neutral ammonium citrate, phosphorus soluble in 2 % citric acid and phosphorus soluble in a mass fraction of 2 % formic acid.
The method has only been validated on inorganic fertilizers but can be applicable to all extracted phosphorous if proper extraction methods are used.

Anorganische Düngemittel - Bestimmung des Gehalts an extrahiertem Phosphor P2O5

Dieses Dokument legt ein Verfahren zur Bestimmung von Phosphor in Düngemittelextrakten fest.
Das Verfahren ist für alle Düngemittelextrakte zur Bestimmung verschiedener Formen von Phosphor anwendbar, wie Phosphor, der in Mineralsäuren löslich ist, wasserlöslicher Phosphor, Phosphor, der in neutralen Ammoniumcitrat-Lösungen löslich ist, Phosphor, der in 2%iger Citronensäure löslich ist, und Phosphor, der in Ameisensäure mit einem Massenanteil von 2 % löslich ist.
Das Verfahren wurde nur für anorganische Düngemittel validiert, kann aber bei Verwendung geeigneter Extraktionsverfahren auf jeden Phosphor in den Extrakten angewendet werden.

Engrais inorganiques - Dosage du phosphore extrait P2O5

Le présent document spécifie une méthode de dosage du phosphore dans des extraits d’engrais.
La méthode est applicable à tous les extraits d’engrais pour le dosage des différentes formes de phosphore telles que le phosphore soluble dans les acides minéraux, dans l’eau, dans des solutions de citrate d’ammonium neutre, dans l’acide citrique à 2 % et dans l’acide formique ayant une fraction massique de 2 %.
La méthode a uniquement été validée pour les engrais inorganiques, mais elle peut être applicable à tout phosphore extrait si des méthodes d’extraction correctes sont utilisées.

Anorganska gnojila - Določanje ekstrahiranega fosforja P2O5

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kSIST FprEN 15959:2023
Anorganska gnojila - Določevanje ekstrahiranega fosforja P2O5
Inorganic fertilizers - Determination of extracted phosphorus P2O5
Anorganische Düngemittel - Bestimmung des Gehalts an extrahiertem Phosphor P2O5
Engrais inorganiques - Dosage du phosphore extrait P2O5
Ta slovenski standard je istoveten z: FprEN 15959
65.080 Gnojila Fertilizers
kSIST FprEN 15959:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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kSIST FprEN 15959:2023

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kSIST FprEN 15959:2023

FprEN 15959


August 2023
ICS 65.080 Will supersede EN 15959:2011
English Version

Inorganic fertilizers - Determination of extracted
phosphorus P O
2 5
Engrais inorganiques - Dosage du phosphore extrait Anorganische Düngemittel - Bestimmung des Gehalts
P2O5 an extrahiertem Phosphor P2O5
This draft European Standard is submitted to CEN members for formal vote. It has been drawn up by the Technical Committee
CEN/TC 260.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.



CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. FprEN 15959:2023 E
worldwide for CEN national Members.

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kSIST FprEN 15959:2023
FprEN 15959:2023 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 4
5 Reagents . 4
6 Apparatus and equipment . 5
7 Sampling and sample preparation . 6
8 Procedure . 6
8.1 Treatment of the solution . 6
8.2 Hydrolysis . 6
8.3 Weighing the crucible . 6

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