Table 2: Comparison of ONOO- and ClO- detection by the synthetized CDs with the indicated by other CDs used in previous literature reports*.
| CDs/ONOO- detection | Fluorescence characteristics | Figures of merit | Ref. | ||||||
| Prec./Synt. | Φ (%) | pH | λEX (nm) | λEM (nm) | LR (µM) | LOD (µM) | Sensitivity (a.u./µM-1) | Selectivity (possible interferents) | |
| Glc, Trp/MW | 12 | 7.4 | 370 | 457 | 5-25 | 1.5 | 3 | Good# | [26] |
| CA, EDA/MW | 40 | 7/10 | 360 | 460 | 2.5-100 | 2/2.7 | 1 | Good# | [27] |
| CA, UR/MW | 7.5 | 9 | 400 | 522 | 2.5-100 | 1.5 | 8 | Good (Fe2+, Fe3+) | [10] |
| CA, UR, Cys/MW/ --- | 21 | 7.4 | 350 | 421 | 2.5-200 | 1.3 | 8 | Good | Our work |
| (NO, Fe2+, Fe3+) | |||||||||
| CDs/ClO- detection | Fluorescence characteristics | Figures of merit | |||||||
| N-CDs | - | 7.4 | 360 | 448 | 0.03-15 | 0 | - | Good | [29] |
| (Fe2+, HO, TBO.) | |||||||||
| Suc, PA/MW | 12.0; 14.2; 16.8 | 5 | 380; 410; 430 | 450; 470; 490 | 0.2-2.0 | 0 | n.p. | Good (MnO4-)## | [30] |
| Pep/ACL | 19 | 8 | 360; 780 | 430; 470 | 0.1-10, 10-300 | 0.05, 0.06 | 0.0024-0.012 | Good### | [31] |
| CA, UR/MW | 10 | 4 | 360 | 520 | 5-200 | 2 | 9 | Good (Fe2+, Fe3+) | [10] |
| CA, UR, SP/MW | 6 | 7.4 | 360 | 441 | 5-100 | 1.8 | 5 | Good (Fe2+, Fe3+) | Our work |
*Prec.-Synthesis precursors; Synt.-Synthesis method; Φ-Quantum yield; λEX-Excitation wavelength at maximum fluorescence intensity; λEM-Emission wavelength at maximum fluorescence intensity; LR-Linear Range; LOD-Limit of Detection; n.p.-not presented; TBO.-Tert-butoxy radical; Glc-Glucose; Trp-Tryptophan; MW-Microwave synthesis; CA-Citric acid; EDA-1,2-Ethylenediamine; UR-Urea; Cys-Cysteine; Suc-Sucrose; PA-Phosphoric Acid; Pep-Pepper; ACL-Autoclave Synthesis; SP-Sodium Phosphate.
#In these refs. the ionic species were not evaluated. In ref. [26] the NO, H2O2, O2.-, in ref. [27] the NO, H2O2, O2.-, HO., NO3-, NO2- and in ref. [29] the H2O2, TBHB, NO, ONOO-, O2.-1 O2, NO2- were evaluated; ##In these refs. Beside the ionic species were also evaluated in ref. [30] the H2O2 and in ref. [31] the H2O2, KClO3, KMnO4, and K2Cr2O4; ###In this reference only ionic species were evaluated.