Comparative Study of Novel Ratio Spectra and Isoabsorptive Point Based Spectrophotometric Methods: Application on a Binary Mixture of Ascorbic Acid and Rutin

Table 2

Determination of AA and RU in tablets (Ruta C 60) batch number 1210864.

Method		Direct	A_Sum	Iso_RD	A_Sum	Iso_RD	Iso_P	RD	DD	MCN	RS
RU	AA	RU	RU	RU	AA	AA	AA	AA	AA	AA	AA
Labelled conc. (μg mL^−1)
6	16	102.94	101.88	100.24	100.40	100.14	101.21	102.59	101.21	101.34	100.85
6	16	100.67	100.31	98.75	101.39	98.80	98.89	100.71	98.89	99.30	98.87
6	16	98.05	95.98	102.25	100.13	98.80	95.82	97.51	95.82	96.18	95.82
6	16	98.27	98.47	102.29	102.11	97.37	97.69	98.83	97.69	97.69	96.90
6	16	99.51	99.18	102.94	101.94	97.36	97.48	99.50	97.48	98.18	97.62
Mean (%)		99.89	99.16	101.29	101.19	98.50	99.34	98.22	98.22	98.54	98.01
SD		2.00	2.20	1.74	0.89	1.17	2.13	2.00	2.00	1.93	1.94

Average of four determinations.