Fig. 5From: Solid-Phase Spectrophotometric Analysis of 1-Naphthol Using Silica Functionalized with m-Diazophenylarsonic AcidCalibration plot for 1-naphthol detection. m (SiO2 –DS) = 50 mg, V = 100 mL, pH = 8, τ = 5 min. Each point is an average of three parallel determinationsBack to article page