Abstract

Rachelle Jenine D. Abuel and Voltaire G. Organo*

DOI : http://dx.doi.org/10.13005/ojc/360427

A simple and green approach towards detecting pollutant gases was developed using flower pigments derived from Anthurium andreanum. A drastic color change was observed when flower extracts, either in solution or adsorbed onto silica gel, were exposed to sulfur dioxide and nitrogen dioxide gas. Only a slight color change was observed for carbon dioxide. These results may be attributed to possible acid-base interaction and bisulfite addition or nitration to anthocyanin pigments in response to pollutant gases.

Anthurium andreanum Extracts; Colorimetric; Pollutant Gases; Flower Pigments

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