This document describes a method for the determination of chromium in aqueous solution obtained from leather. This is an analysis for total chromium in leather; it is not compound specific or specific to its oxidation state. This method describes the determination of chromium by inductively coupled plasma (ICP) and is applicable to leathers which are expected to have chromic oxide contents in excess of 1 mg/kg. Two techniques for the preparation of the solution to be analysed are included. In the event of dispute@ the wet oxidation technique is intended to be used.
EN ISO 5398-4:2019 history
2019EN ISO 5398-4:2019 Leather - Chemical determination of chromic oxide content - Part 4: Quantification by inductively coupled plasma (ICP)
2007EN ISO 5398-4:2007 Leather - Chemical determination of chromic oxide content - Part 4: Quantification by inductively coupled plasma - optical emission spectrometer (ICP-OES) (ISO 5398-4:2007)