SIST ISO 12830

SIST EN 12839 standard addresses:

paper, paperboard, paperboard and fibre and cellulose nanomaterials

Determination of acid-soluble magnesium, calcium, manganese, iron, copper, sodium and potassium

This document specifies the procedure for the determination of acid-soluble magnesium, calcium, manganese, iron, copper, sodium and potassium by atomic absorption spectrometry (AAS) or by inductively coupled plasma emission spectrometry (ICP/ES). The acid-soluble element comprises the acid-soluble part of the incineration residue, i.e. that part of the ignition residue obtained after incineration which is soluble in hydrochloric acid or nitric acid. In cases where the residue is completely soluble, the result obtained by the procedure specified in this document is a measure of the total amount of each element in the sample. This document is applicable to all types of paper, board, pulps and cellulose nanomaterials. The limit of determination depends on the element and on the instrument used.
Source: the Slovenian Standards Institute, taken from the website June 2022.