Organic polymer monolithic columns with incorporated bare and cyano-modified fumed silica nanoparticles for use in hydrophilic interaction liquid chromatography

Journal of Analytical Science and Technology

Table 1 k and α values obtained on 0.6 mg CN-FSNPs/cm-poly(GMM-co-EDMA) monolithic column

All the analyses were carried out under following common conditions; column, 10 cm × 4.6 mm i.d; flow rate, 1 mL/min; injection volume, 20 μL; temperature, room temperature. Other conditions for DMF, formamide, and thiourea: mobile phase, 95% ACN (v/v), 5% water (v/v); t₀, toluene. For thymine, uracil, adenine, cytosine, m-toluic acid, salicylic acid, sulfanilic acid, and sulfosalicylic acid: mobile phase, 95% ACN (v/v), 5% of 10 mM ammonium acetate, pH 4.0 (v/v); t₀, toluene. For benzoic acid, maleic acid, and ascorbic acid: mobile phase, 90% ACN (v/v), 10% of 10 mM ammonium acetate, pH 3.0 (v/v); t₀, phenyl heptane. For nicotinamide, riboflavin, and thiamine: mobile phase, 90% ACN (v/v), 10% of 10 mM ammonium acetate, pH 3.0 (v/v); t₀, toluene. For (±)-phenylpropanolamine, (±)-propranolol, and (±)-ephedrine: mobile phase, 95% ACN (v/v), 5% of 200 mM ammonium acetate, pH 5.0 (v/v); t₀, phenyl heptane