新型烷基醚型键合固定相的制备及评价

首次将一种新型硅烷偶联剂 β (3,4 环氧环己基 )乙基三甲氧基硅烷 (β ECTS)与辛醇反应 ,然后再键合到硅胶上 ,得到了醚型键合固定相 ,并用元素分析、13 C固体核磁、红外光谱等对其进行了表征。以甲醇 水简单的二元流动相体系 ,对该固定相进行了色谱评价。结果表明 ,该固定相具有较好的色谱性能 ,且在 pH 2 5～ 7 5时化学稳定性能良好 ,硅醇基效应得到了很好地抑制 。

十八烷基醚型高效液相反相色谱填料的制备

A simple, practical and economical procedure has been developed to prepare novel C18 ether-bond reversed phase packing. A soft and long C18 alkyl chain was coupled onto silica（Sinopak-S, particle size d=5 μm, pore diameter Dp=11 nm; and surface area S=170 m2/g） with γ-glycidoxypropyltrimethoxysilane as coupling agent. Chromatographic evaluation indicate that its reversed phase behavior was similar to ordinary ODS.