DIN Standards Committee Food and Agricultural Products
Organic and organo-mineral fertilizers - Determination of the total content of specific elements by ICP-AES after digestion by aqua regia; German and English version prEN 17770:2026
Abstract
This document specifies a method for the determination of arsenic (As), cadmium (Cd), copper (Cu), chromium (Cr), lead (Pb), nickel (Ni)), boron (B), cobalt (Co), iron (Fe), manganese (Mn), molybdenum (Mo), zinc (Zn), phosphorus (P), potassium (K), magnesium (Mg), calcium (Ca), sulfur (S) and sodium (Na) in aqua regia digests of organic, organo-mineral fertilizers, and their blends using inductively coupled plasma-atomic emission spectrometry (ICP-AES). This document is applicable to the component materials “by-products”, when used as components of fertilizing products, as well as the fertilizing products blends where a blend is a mix of at least two of the following components: Fertilizers, Liming Materials, Soil Improvers, Growing Media, Inhibitors, Plant Biostimulants, and where the following category: organic fertilizers, organo-mineral fertilizers is the highest % in the blend by mass or volume, or in the case of liquid form by dry mass. If the organic fertilizer or the organo-mineral fertilizer is not the highest % in the blend, the European Standard for the highest % of the blend applies. In case a fertilizing product blend is composed of components in equal quantity, the user decides which standard to apply. Variations in analytical methods for fertilizing product blends can lead to differing results as some components or matrix interactions can affect the outcome. Validation procedures have shown that developed standard methods are robust and reliable across diverse product compositions, but possible interferences and unexpected results when analysing fertilizing product blends are possible. This method is applicable to aqua regia digests prepared according to prEN17768. The method can be used for the determination of other elements, provided the user has verified the applicability. NOTE: Alternatively, inductively coupled plasma mass spectrometry (ICP-MS) may be used for the determination of the elements in the aqua regia digests if the user proves that the method gives the same results.
Begin
2025-06-10
WI
00260325
Planned document number
DIN EN 17770
Project number
05702802
Responsible national committee
Responsible european committee
CEN/TC 260/WG 8 - Organic and organo-mineral fertilizers
draft standard
Organic and organo-mineral fertilizers - Determination of the total content of specific elements by ICP-AES after digestion by aqua regia; German and English version prEN 17770:2026
2026-02
Order from DIN Media
