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

Table 2

Analysis of variance of the absorbance values determined in obtaining of the analytical curves of standard rifaximin, using absorption spectrophotometry method in the ultraviolet region.

Variation sources	DF	SS	Variance		(0.05)
Among concentrations	5	0.61	0.12	140.45	3.11
Linear regression	1	0.61	0.61	702.16	4.75
Linearity deviation	4	0.00	0.00	0.02	3.26
Inside (waste)	12	0.00	0.00	—	—
Total	17	0.61	—	—	—

Significant for %.
DF: degrees of freedom; SS: sum of squares.