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BSI PD CEN/TS 17790:2022

$102.76

Organo-mineral fertilizers. Determination of the chelated micronutrient content and the chelated fraction of micronutrients by treatment with a cation exchange resin

Published By Publication Date Number of Pages
BSI 2022 16
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This document specifies a method for the determination of the chelated micronutrient content and the chelated fraction of a micronutrient, in organo-mineral fertilizers, having an organic matrix based on vegetal residues (cocoa shells, grape residue, soybean residue, etc), algae extract, and animal meal (feather, bones, blood, etc) and containing UVCB, EDDHA, EDDHMA, HBED, EDDHSA micronutrients by the treatment with a cation exchange resin. The limit of determination of the chelated micronutrient content highly depends on the specific electrical conductivity of the sample, on the amount of nutrient present, and varies between 0,005 % in simple matrices with high amounts of micronutrient, and 0,5 % in more complex cases (see 9.1).

PDF Catalog

PDF Pages PDF Title
2 undefined
7 1 Scope
2 Normative references
3 Terms and definitions
8 4 Principle
5 Interferences
6 Reagents
10 7 Apparatus
8 Sampling and sample preparation
9 Procedure
9.1 Extraction of the sample
11 9.2 pH adjustment
9.3 Ion exchange separation
12 9.4 Spectrometric determination
9.5 Water soluble micronutrient content determination
10 Expression of results
10.1 Chelated micronutrient content in the fertilizer
13 10.2 Chelated fraction of a micronutrient in the fertilizer
11 Test report
14 Annex A(informative)Complete names of chelating agents
BSI PD CEN/TS 17790:2022
$102.76