Simultaneous Spectrophotometric Method for Determination of Emtricitabine and Tenofovir Disoproxil Fumarate in Three-Component Tablet Formulation Containing Rilpivirine Hydrochloride

Table 2

Absorptivity value for TDF.

Concentration	Absorbance	Absorptivity	Absorbance	Absorptivity	Absorbance	Absorptivity
	—240.8	—240.8	—257.6	—257.6	—305.6	—305.6
6	0.134	103.3	0.062	233.3	0.000	0.000
9	0.199	363.3	0.169	281.6	0.000	0.000
12	0.264	356.2	0.225	281.2	0.000	0.000
15	0.334	362.0	0.281	281.0	0.000	0.000
18	0.401	362.5	0.336	280.0	0.001	0.555
	Absorptivity for λ1	361.3	Absorptivity for λ2	281.2	Absorptivity for λ3	0.111