Inorganic fertilizers - Determination of nitrogen content in IBDU (isobutylidenediurea) and CDU (crotonylidenediurea)

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Main informations

Collections

National standards and national normative documents

Publication date

December 2023

Number of pages

15 p.

Reference

NF EN 17864

ICS Codes

65.080 Fertilizers

Classification index

U42-156

Print number

2 - février 2024

European kinship

EN 17864:2023

Replaced standards (1)

NF EN 15705

June 2010

Standard Cancelled

Fertilizers - Determination of urea condensates using highperformance liquid chromatography (HPLC) - Isobutylidenediurea and crotonylidenediurea (method A) and methylene-urea oligomers (method B)

Le présent document spécifie les méthodes de dosage de l'isobutylidène diurée (IBDU), de la crotonylidène diurée (CDU) et des oligomères de méthylène-urée (MU) dans les engrais par chromatographie liquide haute performance (HPLC). Il s'applique à tous les engrais qui ne contiennent pas de composés organiques interférents.

Table of contents

1 Domaine d'application
2 Références normatives
3 Termes et définitions
4 Principe
5 Réactifs
6 Appareillage et matériel
7 Échantillonnage et préparation de l'échantillon
8 Mode opératoire
9 Calcul et expression du résultat
10 Fidélité
11 Rapport d'essai
A Résultats des essais interlaboratoires
B Exemples de chromatogramme et de courbes de calibration
C Exemple de conditions pour un système HPLC approprié
Bibliographie

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