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Normas BSI – AENOR
BS EN 16109:2011

BS EN 16109:2011

Fertilizers. Determination of complexed micro-nutrient ions in fertilizers. Identification of lignosulfonates

2011-11-30 /Confirmed
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EN 16109:2011

This document specifies two complementary methods (method A and method B) that allow lignosulfonates to be indentified as soluble complexing agents in 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. The methods are applicable to EC fertilizers covered by Regulation (EC) No 2003/2003 [1].
Polymers, Sulfonate compounds, Lignosulfates, Chelating agents, Lignin, Fertilizers, Sulfur organic compounds, Soil improvement, Chemical analysis and testing, Determination of content, Agricultural chemicals
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