**Table 1:** Quantification results found in the more adequate linear range by addition of ONOO- to the co-doped S,N-CDs and of ClO^{-} to the co-doped P,N-CDs^{*}.

S,N-CDs (m = 1/_{CA}m = 1/_{UR}m = 1)_{Cys} |
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y = a + b × | b = -7.83 ± 0.14; a = -22.87 ± 12.69; m = 7 |
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s = 25.72; _{y/x}r = 0.9991 |
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LR -2.5-200 µM; LD = 1.34 µM | ||||||

[ONOO^{-}] (µM) |
Standard solutions |
Spiked serum samples (100 ×) |
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Expected | 10 | 25 | 50 | 10 | 25 | 50 |

Estimated | 9.95 ± 9.29 | 20.15 ± 9.19 | 43.75 ± 9.05 | 7.30 ± 9.32 | 17.45 ± 9.21 | 42.24 ± 9.05 |

Recovery (%) | 99.55 | 80.56 | 87.49 | 72.99 | 69.80 | 84.68 |

P,N-CDs (m = 3/_{CA}m = 1/_{UR}m = 1)_{P} |
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y = a + b × | b = -5.02 ± 0.08; a = -19.43 ± 4.01; m = 5 |
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s = 6.05 ; _{y/x}r = 0.9996 |
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LR -5-100 µM; LD = 1.80 µM | ||||||

[ClO^{-}] (µM) |
Standard solutions |
Spiked serum samples (100 ×) |
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Expected | 10 | 25 | 50 | 10 | 25 | 50 |

Estimated | 9.99 ± 4.42 | 24.61 ± 4.25 | 53.731 ± 4.27 | 6.29 ± 4.48 | 11.79 ± 4.40 | 19.42 ± 4.30 |

Recovery (%) | 99.88 | 98.45 | 107.461 | 62.94 | 47.16 | 38.85 |

**a*-Intercept: s_{a}-Intercept standard deviation; *b*-Slope: s_{b}-Slope standard deviation; *s _{y/x}*-Residuals standard deviation;