Table 3.

Calibration curve equation and linearity (n = 6), intra-day and inter-day precision, accuracy, and LOQ and LOD.

Range µg/mL	10—400
Regression Equation	y = 260783x − 4.30315e + 006
Correlation coefficient (r)	0.9992
Accuracya	97.24 ± 1.81
Repeatabilityb	98.53 ± 1.796
RSD%	1.823
Intermediate precisionc	96.28 ± 1.61
RSD%	1.672
LOQ (µg/mL)	0.50
LOD (µg/mL)	0.16

a: Six concentrations covering the range (10–400 µg/mL ).

b: Intra-day (n = 3), an average of three concentrations of the analyte ( 15, 40, and 200 µg/mL ) repeated 3 times within the same day.

c: Inter-day (n = 3), an average of three concentrations of the analyte ( 15, 40, and 200 µg/mL ) repeated 3 times in three consecutive days.