Table 2 System suitability parameters of the proposed chromatographic method.

From: A sustainable and green HPLC-PDA technique for the simultaneous estimation of Post-COVID-19 syndrome co-administered drugs with greenness and whiteness assessment

Parameters

PAR

DEX

RIV

Reference Value37.

Retention time (tR)

3.19 ± 0.01

7.02 ± 0.01

7.81 ± 0.01

 

Capacity factor ( K´)

1.13

3.68

4.21

1 < K < 10

Resolution (Rs)

2.68

6.66

Rs ≥ 1.50

Tailing factor (T)

1.01

1.04

1.02

0.80–1.20

Selectivity factor (α)

-

3.26

1.14

α > 1.00

Theoretical plates number (N)

5821

53,077

66,656

> 2000

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