Optimization and evaluation of ultra-trace amounts of lead in real samples using sol–gel based optical sensor coupled with colorimetry

The entrapment of the sensitive reagent 5-(2′-bromophenylazo)-6‑hydroxy-pyrimidine-2,4‑dione (BPAHPD) in a silica sol-gel thin film coated on a glass substrate has been investigated for the development of a highly sensitive and selective optode for the determination of lead ions. The fabrication of...

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Bibliographic Details

Published in:	Talanta Open
Main Authors:	Mai Aish, Reem F. Alshehri, Alaa S. Amin, Hesham H. El-Feky
Format:	Article
Language:	English
Published:	Elsevier 2023-12-01
Subjects:	Optical chemical sensor Colorimetry Azo dyes Lead determination Environmental analysis
Online Access:	http://www.sciencedirect.com/science/article/pii/S2666831923000735