[Retracted] Ternary Complexation Process for New Spectrophotometric Assay of Levodopa using Ni(II) and 2,3-Diaminopyridine

Table 3

Analytical parameters for the determination of LD (Ni-LD-DAP).

Parameter	Values
Linearity, μg·mL^−1	2–58
Calibration curve equation	A = 0.0251°C + 0.0045
Slope	0.0251
Intercept	0.0045
Correlation coefficient, R	0.9995
Molar absorptivity, L·mol^−1·cm^−1	4.93 × 10^3
Sandell’s sensitivity, µg.cm^−2	0.04
LOD, μg·mL^−1	0.1388
LOQ, μg·mL^−1	0.4207
RSD, %	1.71
Accuracy (rec% ±SD)	100.17 ± 1.71