【摘 要】
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The chromatographic performance of superficially porous particles was compared to that of sub-2 μm fully porous particles.Two commercially available columns, Halo fused-core C18 column (50mm×2.1mm, 2.
【机 构】
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College of Food Science and Biological Engineering, Zhejiang Gongshang University, Hangzhou 310035,
【出 处】
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第2届大连国际色谱学术报告会、第37届国际高效液相色谱及相关技术会议、第18届全国色谱学术报告会
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The chromatographic performance of superficially porous particles was compared to that of sub-2 μm fully porous particles.Two commercially available columns, Halo fused-core C18 column (50mm×2.1mm, 2.7μm) and Acquity BEH C18 (50mm×2.1mm, 2.7μm), were used for analysis of four kinds of parabens in seafood sauce.van Deemter, Knox and Poppe plots were constructed for both columns to compare their kinetic performance under the same operating conditions.Other chromatographic parameters such as retention time and pressure drop were also studied.The fused-core column, made by fusing a 0.5 μm porous silica layer onto 1.7 μm nonporous silica cores, was found to provide better analyte shape selectivity and similar efficiency to sub-2 μm particles, without the expense of high column back pressure.
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