Fig. 4From: Simultaneous determination of cetirizine, phenyl propanolamine and nimesulide using third derivative spectrophotometry and high performance liquid chromatography in pharmaceutical preparationsThird order derivative absorption spectra of: (a–g) CTZ (8, 10, 16, 20, 50, 60 and 90 µg/mL), (h) NMS (20 µg/mL), (i) PPA (20 µg/mL)Back to article page