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

Table 4

Analytical parameters for the determination of LD.

Sample	Taken, μg·mL^-1	Found, μg·mL^−1	% recovery
1	14	13.76	98.29
2	18	17.75	98.61
3	22	22.53	102.41
4	26	25.72	98.92
5	30	30.89	102.97
6	34	34.48	101.41
7	38	38.86	102.26
8	42	41.65	99.17
9	46	46.43	100.93
10	50	49.62	99.24
11	54	53.61	99.28
12	58	57.19	98.6
Mean ± SD	100.17 ± 1.71%
n	12
Variance	2.91
SE%	0.17
%RSD	1.71