Quantification of Rifaximin in Tablets by Spectrophotometric Method Ecofriendly in Ultraviolet Region

Table 1

Preparation of the solutions to the accuracy test of the spectrophotometric method in the UV region.

	Volume added of rifaximin sample of concentration; 100 μg mL^−1 (µL)	Volume added of rifaximin standard of concentration; 100 μg mL^−1 (µL)	Final theoretical concentration; (μg mL^−1)
Sample	500	—	10
R1	500	300	16
R2	500	500	20
R3	500	700	24
Standard	—	500	10

Diluted in 5 mL volumetric flask.
Each concentration level was prepared in triplicate.