Document Type

Article

Publication Title

Journal of Chemical Engineering

Abstract

We report an attractive update to the demonstration of acid–base buffer action that is appropriate for ease of use and getting attention in the classroom. The twist is based on new fluorophore information and the recent availability of UV flashlights serving as an ideal, portable excitation light source. The pH-dependent fluorescence comes from a choice among three natural sources, namely narra tree wood extract, kidneywood extract, and scopoletin, which is a purchasable coumarin, that all perform equally well. We provide practical details for performing the buffer demonstration at scales of 100 and 1000 mL and give background information for context.

First Page

701

Last Page

705

DOI

https://doi.org/10.1021/acs.jchemed.3c00792

Publication Date

1-30-2024

Comments

Creative Commons License

This publication is licensed under CC-BY-4.0.

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