Research on Chemical Intermediates p. 5031 - 5042 (2018)
Update date:2022-08-17
Topics:
Hosseini, Morteza
Khoobi, Mehdi
Tarasi, Roghayeh
Ganjali, Mohammad Reza
A rhodamine-conjugated coumarin (L) was used in designing a selective fluorescence chemosensor for the determination of trace amounts of Cr3+ ions in acetonitrile–water (MeCN/H2O (90:10, %v/v) solutions. The intensity of the fluoresce emission of the chemosensor is intensified upon addition of Cr3+ ions in MeCN/H2O (90:10, %v/v) solutions, due to the formation of a selective 1:1 complex between L and Cr3+ ions. The fluorescence enhancement versus Cr3+ concentration has been found to be linear from 1.0 × 10?7 to 1.8 × 10?5 M and a detection limit of 7.5 × 10?8 M. The proposed fluorescent probe proved to be highly selective towards Cr3+ ions as compared to other common metal ions and could be successfully applied to the determination of Cr3+ concentrations in some water and wastewater samples.
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