Table 3 Linearity data of analytical methods.

Range of concentration [μg mL⁻¹] [n = 6]

5–30

The slope of the regression equation

50.0930

0.0435

The intercept of the regression equation

2.8095

− 0.0083

Correlation coefficient

0.9997

0.9995

Limit of detection [μg mL⁻¹]

0.70

0.90

Limit of quantification [μg mL⁻¹]

2.00

2.80

Recovery % [n = 3]

99.52–100.58

98.99–101.07