From: Silica-titania xerogel for solid phase spectrophotometric determination of salicylate and its derivatives in biological liquids and pharmaceuticals
Salicylate derivative (L)
Ti:L ratio
lgKeq in solid phase
Salicylate
1:0.5
2.0
Salicylamide
1:1
2.9
Methylsalicylate
3.4