Simultaneous Estimation of Ambroxol Hydrochloride and Cetirizine Hydrochloride in Pharmaceutical Tablet Dosage Form by Simultaneous Equation Spectrophotometric Method: A Quality Control Tool for Dissolution Studies

Table 1

Absorbance and absorptivity values of Ambroxol Hydrochloride at λ _max 244 nm and 230 nm, respectively.

Serial number	Concentration; (µg/mL)	*Absorbance at 244 nm ± S.D	*Absorbance at 230 nm ± S.D	Absorptivity at 244 nm	Absorptivity at 230 nm
1	2	0.044±0.001	0.034±0.002	0.022	0.017
2	4	0.101±0.002	0.079±0.004	0.025	0.020
3	6	0.152±0.003	0.119±0.002	0.025	0.020
4	8	0.197±0.001	0.152±0.003	0.025	0.019
5	10	0.248±0.002	0.190±0.002	0.025	0.019
6	12	0.297±0.004	0.229±0.001	0.025	0.019
7	14	0.343±0.002	0.262±0.001	0.025	0.019
8	16	0.401±0.002	0.309±0.003	0.025	0.019
9	18	0.452±0.003	0.347±0.002	0.025	0.019
			Average	𝑎𝑥1=0.025	𝑎𝑥2=0.019

∗Each value is the average of three determinations.