A Novel Ratiometric Probe Based on Nitrogen-Doped Carbon Dots and Rhodamine B Isothiocyanate for Detection of Fe³⁺ in Aqueous Solution

Figure 5

Selectivity of the CD-RhB probe toward Fe³⁺ over other ions. The concentration of metal ions is 1.0 μM. The error bars represent standard deviations based on three independent measurements.