2024
DOI: 10.11591/ijphs.v13i1.23211
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RGB-based colorimetric method for the analysis of water alkalinity using Cordyline fruticosa extracts as visual indicator

Christian Alex C. Parungao,
Darwin F. Reyes

Abstract: Leaf extracts of <em>Cordyline fruticosa</em> was used as a natural visual indicator for a digital image-based analytical procedure for the measurement of water alkalinity. A smartphone and ImageJ were used to capture and process the images, respectively. This work sought to develop and evaluate a greener strategy of using of <em>Cordyline fruticosa</em> leaf extract as natural indicator, in a digital image-based colorometric set-up using smartphone. Under optimized conditions, the line… Show more

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