CEN/TS 17784-1:2022

Organo-mineral fertilizers - Identification of complexing agents - Part 1: Method using UV-Vis spectrophotometry and gravimetry

This document specifies two methods required for the identification of lignosulfonate by UV-Vis spectrophotometry (method A) and gravimetry (method B) in organo-mineral fertilizers.
NOTE   Lignosulfonate, as a complexing agent, is a natural polymer produced as a by-product of the sulfite method for manufacturing paper from wood pulp in the paper industry. As a natural polymer, it presents a poorly defined and variable chemical structure. It is an intricate mixture of small- to moderate-sized polymeric compounds with sulfonate groups attached to the molecule, and diverse complexing capacity.

Organisch-mineralische Düngemittel - Identifizierung von Komplexbildnern - Teil 1: Verfahren mittels UV/VIS-Spektralphotometrie und Gravimetrie

Dieses Dokument legt zur Identifizierung von Ligninsulfonaten in organisch-mineralischen Düngemitteln zwei Verfahren fest, und zwar mittels UV/VIS Spektralphotometrie (Verfahren A) und Gravimetrie (Verfahren B).
ANMERKUNG   Ligninsulfonat als Komplexbildner ist ein natürliches Polymer, das in der Papierindustrie als Neben-produkt des Sulfitverfahrens zur Herstellung von Papier aus Holzstoff anfällt. Als ein natürliches Polymer weist es eine kaum definierte und variable chemische Struktur auf. Es handelt sich um ein kompliziertes Gemisch aus kleinen bis mittel¬großen polymeren Verbindungen mit Sulfonatgruppen, die an das Molekül gebunden sind, sowie mit unterschiedlichem Komplexbildungsvermögen.

Engrais organo-minéraux - Identification des agents complexants - Partie 1 : Méthode utilisant la spectrophotométrie UV-Vis et la gravimétrie

Le présent document spécifie deux méthodes requises pour l’identification du lignosulfonate par spectrophotométrie UV-Vis (méthode A) et par gravimétrie (méthode B) dans les engrais organo-minéraux.
NOTE   Le lignosulfonate, en tant qu’agent complexant, est un polymère naturel qui est un sous-produit de la méthode des sulfites utilisée pour la fabrication de papier à partir de pâte de bois dans l’industrie papetière. En tant que polymère naturel, il présente une structure chimique mal définie et variable. Il s’agit d’un mélange complexe de composés polymères de taille petite à moyenne, avec des groupes sulfonate attachés à la molécule, ayant une capacité complexante variable.

Organsko-mineralna gnojila - Identifikacija sredstev za kompleksiranje - 1. del: Metoda z UV/VIS spektrofotometrijo in gravimetrijo

Ta dokument določa dve metodi, potrebni za identifikacijo lignosulfonata s spektrofotometrijo UV-Vis (metoda A) in gravimetrijo (metoda B) v organsko-mineralnih gnojilih.
OPOMBA:   Lignosulfonat kot sredstvo za kompleksiranje je naravni polimer, proizveden kot stranski produkt sulfitne metode za proizvodnjo papirja iz lesne celuloze v papirni industriji. Kot naravni polimer ima slabo definirano in spremenljivo kemijsko strukturo. Je zapletena mešanica polimernih spojin majhne do zmerne velikosti s sulfonatnimi skupinami, vezanimi na molekulo, in raznoliko sposobnostjo kompleksiranja.

General Information

• Status: Published
• Publication Date: 05-Apr-2022
• ICS: 65.080 - Fertilizers
• Technical Committee: CEN/TC 260 - Fertilizers and liming materials
• Drafting Committee: CEN/TC 260/WG 5 - Determination of chelating agents
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 06-Apr-2022
• Due Date: 28-Jan-2023
• Completion Date: 06-Apr-2022
• Directive: 2019/1009 - Regulation (EU) 2019/1009 of the European Parliament and of the Council of 5 June 2019 laying down rules on the making available on the market of EU fertilising products and amending Regulations (EC) No 1069/2009 and (EC) No 1107/2009 and repealing Regulation (EC) No 2003/2003
• Mandate: M/564 - Fertilising products in support of Regulation (EU) 2019/1009
• Ref Project: SIST-TS CEN/TS 17784-1:2023 - Organo-mineral fertilizers - Identification of complexing agents - Part 1: Method using UV-Vis spectrophotometry and gravimetry

Standards Content (Sample)

SLOVENSKI STANDARD
SIST-TS CEN/TS 17784-1:2023
01-februar-2023
Organsko-mineralna gnojila - Identifikacija sredstev za kompleksiranje - 1. del:
Metoda z UV/VIS spektrofotometrijo in gravimetrijo
Organo-mineral fertilizers - Identification of complexing agents - Part 1: Method using
UV-Vis spectrophotometry and gravimetry
Organisch-mineralische Düngemittel - Identifizierung von Komplexbildnern - Teil 1:
Verfahren mittels UV/VIS-Spektralphotometrie und Gravimetrie
Engrais organo-minéraux - Identification des agents complexants - Partie 1 : Méthode
utilisant la spectrophotométrie UV-Vis et la gravimétrie
Ta slovenski standard je istoveten z: CEN/TS 17784-1:2022
ICS:
65.080 Gnojila Fertilizers
SIST-TS CEN/TS 17784-1:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TS CEN/TS 17784-1:2023


CEN/TS 17784-1
TECHNICAL SPECIFICATION

SPÉCIFICATION TECHNIQUE

April 2022
TECHNISCHE SPEZIFIKATION
ICS 65.080
English Version

Organo-mineral fertilizers - Identification of complexing
agents - Part 1: Method using UV-Vis spectrophotometry
and gravimetry
Engrais organo-minéraux - Identification des agents Organisch-mineralische Düngemittel - Identifizierung
complexants - Partie 1 : Méthode utilisant la von Komplexbildnern - Teil 1: Verfahren mittels
spectrophotométrie UV-Vis et la gravimétrie UV/VIS-Spektralphotometrie und Gravimetrie
This Technical Specification (CEN/TS) was approved by CEN on 21 February 2022 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.

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, Turkey and
United Kingdom.





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© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 17784-1:2022 E
worldwide for CEN national Members.

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CEN/TS 17784-1:2022 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Sampling and sample preparation . 5
5 Method A: Determination of phenolic hydroxyl content and 232,5 nm absorbance for
the identification of lignosulfonates . 5
5.1 Principle . 5
5.2 Reagents . 6
5.3 Apparatus . 6
5.4 Procedure . 7
5.5 Calcu
...