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Journal of Analytical Science and Technology
Fig. 2 | Journal of Analytical Science and Technology

Fig. 2

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

Fig. 2

Chromatograms of small neutral polar solutes (a), nucleobases (b), and organic acids (c) obtained on FSNPs-poly(GMM-co-EDMA) monolithic column. Separation conditions: column, 10 cm × 4.6 mm i.d with 0.6 mg of FSNPs/cm; flow rate, 1 mL/min; injection volume, 20 μL; column temperature, room temperature. For a, mobile phase, 95% ACN (v/v), 5% water (v/v); solutes: 1, DMF; 2, formamide; 3, thiourea; t0, toluene. For b, mobile phase, 95% ACN (v/v), 5% of 10 mM ammonium acetate, pH 4.0 (v/v); solutes: 1, thymine; 2, uracil; 3, adenine; 4, cytosine; t0, toluene. For c, mobile phase, 95% ACN (v/v), 5% of 10 mM ammonium acetate, pH 4.0 (v/v); solutes: 1, m-toluic acid; 2, salicylic acid; 3, sulfanilic acid; 4, sulfosalicylic acid; t0, toluene

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