Detection of fluoride ions using carbon quantum dots derived from coal .
WEBDetection of fluoride ions using carbon quantum dots derived from coal washery rejects via an on–off–on fluorescence mechanism: a smartphonebased imageprocessing and machine learning approach A. Boruah, A. Rajbonshi, K. Roy and B. K. Saikia, New J. Chem., 2024, 48, 3862 DOI: /D3NJ05230C