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Table 1 Assay parameters for the determination of AZN and RSGL by the proposed methods

From: Carbon dots as fluorescent nanoprobes for assay of some non-fluorophoric nitrogenous compounds of high pharmaceutical interest

Parameters

Spectrophotometric method

Fluorimetric method

AZN

Fo − F AZN

Fo/F AZN

Fo − F RSGL

Fo/F RSGL

λnm

238

λem 528

λem 528

λem 528

λem 528

Conc. range (μg/mL)

5–30

0.001–0.005

0.001–0.005

0.001–0.005

0.001–0.005

Regression equation

     

 aa

-0.0364

15.298

1.041

31.59

0.755

 bb

0.012

5178

16.68

81.95

4.805

 rc

0.9996

0.9995

0.9998

0.9997

0.9997

 Sa

0.00338

0.302

0.4507

0.654

0.036

 Sb

0.00017

91.14

0.00149

1.979

0.108

 Sb2

2.89 × 10−8

8306.49

2.22 × 10−6

3.916

0.0118

 Sb %

1.491

0.0058

0.0089

0.798

0.749

 LOD

0.928

0.00019

0.0002

0.026

0.0247

 LOQ

2.81

0.00058

0.0008

0.079

0.0749

 Significance F

0.00022235

1.2

4.33

0.0153

0.0144

 F

4495.82

3227.21

1369.82

1714.1

1948.43

 Accuracy (mean ± RSD%)

99.60 ± 0.82

100.29 ± 0.18

99.72 ± 0.33

99.84 ± 0.42

101.03 ± 0.44

Precision (RSD%)

     

 Intraday precision

1.07

0.17

0.40

0.33

0.49

 Inter day precision

0.58

0.19

0.41

0.51

0.36

  1. aa is the intercept
  2. bb is the slope
  3. cr is the regression coefficient