From: Silica-titania xerogel for solid phase spectrophotometric determination of salicylate and its derivatives in biological liquids and pharmaceuticals
Composition
pH
Found, mM
Salicylate 2.5 mM
Methylsalicylate 3.75 mM
2.0
Salicylate 2.5 ± 0.2
Methylsalicylate 1.9 mM
Salicylate 5.0 mM
7.6
Methylsalicylate 1.97 ± 0.5