Discrimination of Trace Heavy‐Metal Ions by Filtration on Sol–Gel Membrane Arrays

Abstract

A heavy sensation! A colorimetric method was investigated for the determination of heavy-metal ions. A sensor array consisting of five indicators was developed for the sensitive detection of eight heavy-metal ions at standard concentrations of wastewater discharge (see graphic). The array provides facile identification of these ions by a standard chemometric approach; no misclassifications were found in the 45 trials. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.