Table 2 Analytical performance data for the determination of the studied analytes by the proposed method

Linearity range (ng/mL)

20.0–200.0

20.0–200.0

Intercept

−24.518

−18.97

Slope

1.844

1.749

Correlation coefficient (r)

0.9999

0.9999

SD of residuals (S_y/x)

1.140

0.856

SD of intercept (S_a)

0.9054

0.679

SD of slope (S_b)

8.314 × 10⁻³

6.243 × 10⁻³

% RSD^a

1.08

1.17

MDL (ng/mL)^b

15.0

13.0

LOQ (ng/mL)^c

20.0

18.0