Fig. 5From: Silica-titania xerogel doped with Mo,P-heteropoly compounds for solid phase spectrophotometric determination of ascorbic acid in fruit juices, pharmaceuticals, and synthetic urineCalibration curve of solid phase spectrophotometric ascorbic acid determination using Ti5HPC20 (see Table 1 for xerogel names). m(Ti5HPC20) = 0.10 g, V = 5.0 mL, pH 4.0, time of contact 20 minBack to article page