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Colorimetric detection of oxalate in aqueous solution by a pyrogallol red-based Cu 2+ complex

Colorimetric detection of oxalate in aqueous solution by a pyrogallol red-based Cu 2+ complex

Koshiro Inoue, Shunichi Aikawa, Yasumasa Fukushima

Luminescence. 2018 Mar;33(2):277-281.

PMID: 29044910

Abstract:

The pyrogallol red (PR)-based Cu2+ complex was proven to be an effective and selective colorimetric chemosensing ensemble for recognition of oxalate over other anions in a perfect aqueous solution. The addition of oxalate to the PR-Cu2+ complex resulted in a colour change from purple to orange colour due to the regeneration of PR by the chelation of oxalate with Cu2+ , while other anions did not induce any significant colour change. Moreover, it was revealed that no obvious interference was observed during the titrations with oxalate into each other anion. Therefore, the PR-Cu2+ complex can be used as a simple and practical colorimetric chemosensor for detecting oxalate.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP32638883	Pyrogallol Red		32638-88-3	Price

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