Organominerální hnojiva - Identifikace chelatačních činidel - Část 1: Stanovení EDTA, HEEDTA a DTPA iontovou chromatografií (Norma k přímému použití jako ČSN).
NORMA vydaná dňa 1.1.2023
Označenie normy: ČSN P CEN/TS 17789-1
Rozlišovací znak: 654952
Katalógové číslo: 515998
Dátum vydania normy: 1.1.2023
Počet strán: 16
Približná hmotnosť: 48 g (0.11 libier)
Krajina: Česká technická norma
Kategória: Technické normy ČSN
This document specifies a method for the determination by ion chromatography of the total amount of each of the individual chelating agents EDTA, HEEDTA, and DTPA in organo-mineral fertilizers, having an organic matrix based on vegetal residues (cocoa shells, grape residue, soybean residue, .), algae extract, and animal meal (feather, bones, blood, ...) and containing one or more of these substances. The method allows the identification and the determination of the total water-soluble fraction of each of these chelating agents. It does not allow to distinguish between the free form and the metal bound form of the chelating agents. This method applies to organo-mineral fertilizers containing chelates of one or more of the following micronutrients: cobalt, copper, iron, manganese, zinc and with a mass fraction of at least 0,1 %