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BSI PD CEN/TS 17764:2022

BSI PD CEN/TS 17764:2022

$102.76

Inorganic micronutrient fertilizers. Determination of the concentration of free, chelated or complexed micronutrients and the chelating and/or complexing agents present in compound inorganic micronutrient fertilizers

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BSI 2022 18
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This document specifies the method for the determination of free, chelated or complexed micronutrients and chelating and/or complexing agents present in compound inorganic micronutrient fertilizers. This method applies to compound inorganic micronutrient fertilizers when micronutrients are chelated and/or complexed. The method is based on the determination of the following specific parameters : – the water-soluble micronutrient concentration; – the fraction of chelated micronutrients in relation; – identification of chelating agents EDTA, DTPA, HEEDTA, IDHA, [S,S]–EDDS, [o,o] EDDHA, [o,o] EDDHMA, [o,p] EDDHA, HBED and EDDHSA; – the fraction of complexed micronutrients; – identification of complexing agents (lignosulfonates, heptagluconic acid (HGA)). The method is based on – ICP (inductive coupled plasma) or FAAS (flame atomic absorption spectrometry) measurement of the concentration of water-soluble micronutrients according to EN 16963 or EN 16965 after extraction according to EN 16962; – LC (liquid chromatography) measurement of the chelating agents according to EN 15950, EN 13368-1, EN 13368-2, EN 13368-3, EN 15451, EN 15452; and/or complexing agents according to EN 16109 and EN 16847; – determination of the concentration of chelated micronutrients by CEN/TS 17786-1 and/or CEN/TS 17786-2; – determination of the complexed micronutrients by EN 15962. To avoid duplication of the analytical methods, CEN/TS 17786-2 describes the determination of micronutrients and the identification and determination of chelating agents.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 1 Scope
2 Normative references
9 3 Terms and definitions
4 Principle
10 5 Interferences
6 Reagents
11 7 Apparatus
8 Sampling and sample preparation
9 Procedure
9.1 General
12 9.2 Determination of the water-soluble micronutrient content
9.2.1 Extraction
9.2.2 Determination by ICP or FAAS
9.3 Determination of the chelating and/or complexing agents
9.3.1 General
9.3.2 Determination of the chelated or complexed micronutrient
9.3.2.1 Determination of the chelated fraction
9.3.2.2 Determination of the complexed fraction
13 10 Expression of results
10.1 Sum of water-soluble micronutrient content
10.2 Sum of chelating agents content
14 10.3 Chelated fraction (ChF)
10.4 Sum of complexing agents content
10.5 Complexed fraction
15 10.6 Free micronutrients
11 Test report
16 Annex A (informative)Complete names of chelating agents

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BSI PD CEN/TS 17764:2022
$102.76