研究了烷基键合氧化锆微球固定相(C12-ZrO2)的化学稳定性及其对碱性化合物的色谱保留特征,发现C12-ZrO2在pH为2～12时稳定,碱性化合物在该固定相上为典型的反相色谱保留机理.基于对碱性化合物的保留因子与流动相pH关系的考察,建立了碱性化合物离解常数的测定方法.测定了13种典型芳香胺和吡啶衍生物的离解常数,与文献结果对比,其差值在-0.27～0.35 pH单位范围内,说明该方法能够用于碱性化合物离解常数的快速测定.
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