NF ISO 9795, Q34-102 (01/2024)

This method describes the procedures to be followed for the determination of the content of inorganic materials in kraft lignin, soda lignin and hydrolysis lignin. The method is applicable to lignin isolated by a kraft crushing process, a soda crushing process, or to lignin obtained by hydrolysis of biomass. For kraft lignin in acid form, soda lignin and hydrolysis lignin, the inorganic content is determined from the ash content of the sample. For kraft lignin in basic form, the inorganic content is determined from the sum of the calcium, magnesium, manganese, iron, copper, sodium and potassium contents.
(Automatic translation from French)