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Homepage>PD CEN/TS 17784-1:2022 Organo-mineral fertilizers. Identification of complexing agents. Method using UV-Vis spectrophotometry and gravimetry

sklademVydáno: 2022-07-20

PD CEN/TS 17784-1:2022

Organo-mineral fertilizers. Identification of complexing agents. Method using UV-Vis spectrophotometry and gravimetry

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Označení normy:	PD CEN/TS 17784-1:2022
Počet stran:	18
Vydáno:	2022-07-20
ISBN:	978 0 539 17912 5
Status:	Standard

DESCRIPTION

PD CEN/TS 17784-1:2022

This standard PD CEN/TS 17784-1:2022 Organo-mineral fertilizers. Identification of complexing agents. is classified in these ICS categories:

65.080 Fertilizers

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.

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