Fertilizers - Extraction of phosphorus soluble in Joulie's alcaline ammonium citrate

This document specifies the procedure for the extraction of phosphorus soluble in Joulie’s alkaline ammonium citrate.
The method is applicable to all the straight and compound phosphate fertilizers, in which the phosphate occurs in an alumino-calcic form.

Düngemittel - Extraktion des in alkalischem Ammoniumcitrat nach Joulie löslichen Phosphors

Das vorliegende Dokument legt ein Verfahren zur Extraktion des in alkalischem Ammoniumcitrat nach Joulie löslichen Phosphors fest.
Das Verfahren ist auf alle Ein- und Mehrnährstoff-Phosphatdünger anwendbar, bei denen Phosphor in Form von Calcium-Aluminium-Phosphat vorliegt.

Engrais - Extraction du phosphore soluble dans le citrate d'ammonium alcalin de Joulie

Le présent document décrit le mode opératoire d’extraction du phosphore soluble dans le citrate d’ammonium alcalin de Joulie.
La présente méthode s’applique à tous les engrais phosphatés simples ou composés dans lesquels l’anhydride phosphorique se trouve sous forme aluminocalcique.

Gnojila - Ekstrakcija fosforja, topnega v amonijevem citratu v alkalnem mediju (Joulie)

Ta dokument opredeljuje postopek ekstrakcije fosforja, topnega v amonijevem citratu v alkalnem mediju (Joulie). Metoda velja za vsa enostavna in sestavljena fosfatna gnojila, v katerih se fosfat pojavlja v aluminij-kalcijevi obliki.

General Information

Status
Published
Public Enquiry End Date
31-Jan-2011
Publication Date
12-Sep-2011
ICS
65.080 - Fertilizers
Technical Committee
KAT - Soil quality
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
07-Sep-2011
Due Date
12-Nov-2011
Completion Date
13-Sep-2011
Directive
2003/2003 - Regulation (EC) N° 2003/2003 of the European Parlament and of the council of 13 October 2003 relating to fertilisers
Mandate
M/335 - Standardization Mandate assigned to the CEN concerning the modernisation of the methods of anylysis of Fertilizers
Ref Project
EN 15923:2011 - Fertilizers - Extraction of phosphorus soluble in Joulie's alcaline ammonium citrate

Relations

Replaces
SIST-TS CEN/TS 15923:2010 - Fertilizers - Extraction of phosphorus soluble in Joulie's alcaline ammonium citrate
Effective Date
01-Oct-2011

Overview

EN 15923:2011 - Fertilizers: Extraction of phosphorus soluble in Joulie’s alkaline ammonium citrate - is a CEN standard that specifies a laboratory procedure to extract phosphorus from phosphate fertilizers using Joulie’s alkaline ammonium citrate reagent. The method applies to straight and compound phosphate fertilizers in which phosphate occurs in an alumino‑calcic form. It defines reagents, apparatus, extraction conditions and pre‑treatment steps needed to obtain an extract for subsequent phosphorus determination.

Key topics and requirements

  • Scope and applicability: Designed for phosphate fertilizers where phosphate is present as alumino‑calcic compounds; not a sampling method (see EN 1482‑1/2 for sampling and sample preparation).
  • Principle: Vigorous extraction by shaking with Joulie’s alkaline ammonium citrate at about 20 ± 2 °C, optionally in the presence of oxine (8‑hydroxyquinoline) for Mg‑containing fertilizers.
  • Reagents:
    • Water (distilled or demineralized).
    • Joulie’s alkaline ammonium citrate (prepared to a defined specification - citric acid and ammonia/dibasic ammonium citrate proportions given). Total ammonia content of the reagent must be verified (reference to EN 15475 for ammoniacal nitrogen determination).
    • Oxine (8‑hydroxyquinoline) for samples with significant magnesium.
  • Apparatus: Small mortar, 500 ml and 1 000 ml graduated flasks, rotary shaker (35–40 turns/min).
  • Procedure highlights:
    • Typical test portion: 1 g of prepared sample.
    • Sequential moistening and decanting with ~100 ml total citrate solution, rinse with 40 ml water.
    • Shake 3 h, stand 15–16 h, shake again 3 h at controlled temperature, then make up volume, filter and collect clear filtrate.
    • The filtrate is used for phosphorus determination (see CEN/TS 15959).
  • Magnesium handling: Add 3 g oxine to the test portion when Mg/P2O5 ratio > 0.03 to prevent interference.

Applications and who uses it

  • Quality control laboratories in fertilizer manufacturing and distribution.
  • Regulatory and conformity testing bodies implementing fertilizer standards and legislation.
  • Research and agronomy labs assessing phosphate availability in mineral fertilizer products.
  • Useful for producers and labs needing consistent, repeatable phosphorus extraction data for product specification, compliance, and comparative testing.

Related standards

  • EN 1482‑1 / EN 1482‑2 - Sampling and sample preparation for fertilizers
  • EN 15475 - Determination of ammoniacal nitrogen (used to verify reagent)
  • CEN/TS 15959 - Determination of extracted phosphorus
  • Regulation (EC) No 2003/2003 - EU fertiliser regulation (referenced method in Annex IV)

Keywords: EN 15923:2011, phosphorus extraction, Joulie’s alkaline ammonium citrate, fertilizers, phosphate fertilizers, alumino‑calcic, oxine, laboratory method, CEN.

Frequently Asked Questions

SIST EN 15923:2011 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Fertilizers - Extraction of phosphorus soluble in Joulie's alcaline ammonium citrate". This standard covers: This document specifies the procedure for the extraction of phosphorus soluble in Joulie’s alkaline ammonium citrate. The method is applicable to all the straight and compound phosphate fertilizers, in which the phosphate occurs in an alumino-calcic form.

This document specifies the procedure for the extraction of phosphorus soluble in Joulie’s alkaline ammonium citrate. The method is applicable to all the straight and compound phosphate fertilizers, in which the phosphate occurs in an alumino-calcic form.

SIST EN 15923:2011 is classified under the following ICS (International Classification for Standards) categories: 65.080 - Fertilizers. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN 15923:2011 has the following relationships with other standards: It is inter standard links to SIST-TS CEN/TS 15923:2010. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

SIST EN 15923:2011 is associated with the following European legislation: EU Directives/Regulations: 2003/2003; Standardization Mandates: M/335. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.

SIST EN 15923:2011 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Gnojila - Ekstrakcija fosforja, topnega v amonijevem citratu v alkalnem mediju (Joulie)Düngemittel - Extraktion des in alkalischem Ammoniumcitrat nach Joulie löslichen PhosphorsEngrais - Extraction du phosphore soluble dans le citrate d'ammonium alcalin de JoulieFertilizers - Extraction of phosphorus soluble in Joulie's alcaline ammonium citrate65.080GnojilaFertilizersICS:Ta slovenski standard je istoveten z:EN 15923:2011SIST EN 15923:2011en,fr,de01-oktober-2011SIST EN 15923:2011SLOVENSKI
STANDARDSIST-TS CEN/TS 15923:20101DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15923
June 2011 ICS 65.080 Supersedes CEN/TS 15923:2009English Version
Fertilizers - Extraction of phosphorus soluble in Joulie's alcaline ammonium citrate
Engrais - Extraction du phosphore soluble dans le citrate d'ammonium alcalin de Joulie
Düngemittel - Extraktion des in alkalischem Ammoniumcitrat nach Joulie löslichen Phosphors This European Standard was approved by CEN on 29 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
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Management Centre:
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B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15923:2011: ESIST EN 15923:2011
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