A Simple Colorimetric Procedure for Differentiating Anions Using Flower Pigments from Anthurium andreanum
A simple, “green” and colorimetric approach in differentiating various anions is presented. Acidified ethanolic extracts from flowers of Anthurium andreanum undergo color changes in the presence of HSO4-, CH3COO-, C6H5COO-, HCO3-, CO32-, HPO42- and PO43- anions in aqueous solutions. Anionic acid-bas...
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| Veröffentlicht in: | Oriental journal of chemistry 2016-06, Vol.32 (3), p.1347-1352 |
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| container_title | Oriental journal of chemistry |
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| creator | Galingana, Maynard O. Organo, Voltaire G. |
| description | A simple, “green” and colorimetric approach in differentiating various anions is presented. Acidified ethanolic extracts from flowers of Anthurium andreanum undergo color changes in the presence of HSO4-, CH3COO-, C6H5COO-, HCO3-, CO32-, HPO42- and PO43- anions in aqueous solutions. Anionic acid-base conjugate pairs such as HCO3- and CO32-, HSO4- and SO42-, and phosphates H2PO4-, HPO42-, and PO43- can also be discriminated from each other. Visible spectroscopic analysis indicates possible structural changes in pigments due to pH change of solution as a consequence of the basic property of anions. |
| doi_str_mv | 10.13005/ojc/320308 |
| format | Article |
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| subjects | Acidification Acids Anions Aqueous solutions Color Colorimetry Flowers Food Phosphates Pigments Studies |
| title | A Simple Colorimetric Procedure for Differentiating Anions Using Flower Pigments from Anthurium andreanum |
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