A rapid colorimetric method for the detection of carminic acid in samples based on visible color change

Azra Akbar,Amna Jabbar Siddiqui,Syed Tarique Moin,Muhammad Noman Khan,Ali Raza,Adeeba Khadim,Muhammad Usman,M. Iqbal Choudhary,Syed Ghulam Musharraf

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy（2023）

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摘要

•A cost-effective method based on the detection of carminic acid using lead nitrate.•A rapid color change is observed which can be easily differentiated from the human eye.•Carminic acid can be detected with a LOD of 0.0025 mg mL−1.•Applicable to the wide use of samples including food and the non-food items.•The structural study of Carminic acid-Pb2+ complexes was also studied.

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