Table 1 Regression equation and validation parameters for the proposed method

Linear range (ng mL^− 1)

10–300

Standard deviation of slope (S_b)

0.69

Intercept (a)

2272.56

Standard deviation of intercept (S_a)

68.51

Correlation coefficient (r)

0.9999

Determination coefficient (r²)

0.9998

Standard deviation of slope (S_b)

0.69

Number of determinations

5

LOD (ng mL^− 1)

3.17

LOQ (ng mL^− 1)

9.62