以阴离子聚合物聚丙烯酸为涂层材料，研制了一种新型的阴离子型毛细管电泳Polybrene/聚丙烯酸双涂层柱。此法不但操作方便，而且毛细管涂层重现性好，柱寿命超过100次电泳分析，经1mol/LHC1、0.1mol/LNaOH、CH3OH和CH3CN 等冲洗15min 后，涂层未发生变化，化学稳定性强。将该双涂层柱用于以新型多糖作手性选择剂的碱性药物手性拆分中，毛细管内壁对碱性药物的吸附作用大大降低，样品色谱峰对称性显著改善，手性分离的效果良好。

目的 将多聚乙酰神经氨糖酸用作分离双氢吡啶类药物对映体的毛细管电泳手性选择剂，建立新药马来酸氨氯地平对映体的拆分方法。方法 考察了手性选择剂浓度、运行缓冲液pH值、毛细管温度、工作电压和多糖分子量等因素对手性分离的影响。结果 马来酸氨氯地平两对映体得到了完全分离，分离度为2.20，并研究了多聚乙酰神经氨糖酸对马来酸氨氯地平的手性识别机理。结论 本法操作简便，可用于该新药对映体的分离分析。

目的 首次建立抗癫痫新药苯甲酰苯巴比妥对映体的毛细管电泳拆分方法。方法 以β环糊精（βCD）为手性选择剂，考察了背景电解质pH值、 β-CD浓度、样品介质、温度、操作电压和有机添加剂等因素对手性分离的影响，并提出了可能的手性识别机制。结果 在优化的电泳条件下，苯甲酰苯巴比妥对映体得到了基线分离，Rx达2.04。结论 此法操作简单方便，手性分离效果好，可用于该新药的分离分析。

目的 建立复方甲硝唑片中主药甲硝唑和法莫替丁的含量测定方法。方法 采用高效液相色谱法，色谱柱：Spherisorb CR（150mm×4.6mm，5μm）不锈钢柱，流动相：pH3、0.05mol·L-1磷酸盐缓冲液乙腈甲醇（88∶10∶2），检测波长265mm内标法定量。结果 在优化的色谱条件下，甲硝唑、法莫替丁和内标氢氯噻嗪间均能完全分离，片剂辅料不干扰测定，甲硝唑、法莫替丁的线性范围分别为100～500μg·mL和5～25μg·mL，回收率分别为99.79%和100.6%，RSD<1.5%。结论 该法专属性强，操作方便，结果准确，重复性好。

The effect of structure modification of chondroitin sulfate C on its enantioselectivity to several representative basic drugs in capillary electrophoresis was investigated. Chemical desulfation showed no remarkable decrease in selectivity, whereas depolymerization with chondroitinase ABC resulted in complete loss of selectivity. Comparison with chondroitin sulfate A indicated considerable decrease in selectivity with this isomer. The great retention of enantioselectivity in the desulfated derivative suggests that the selectivity comes from the difference of the magnitude of an interaction in the multipoint mechanism between a part of the drug molecule and a functional group in chondroitin sulfate C other than the sulfate group. The sulfate group is not considered to play a major role for chiral separation. The complete loss of selectivity by depolymerization is consistent with a general tendency of lower selectivity in smaller saccharides, and the priority of chondroitin sulfate C to chondroitin sulfate A suggests the importance of the hydroxyl group at C in the galactosamine 4 residue. During the course of this work we observed heavy tailing of the peaks of basic drugs in some batches of uncoated fused-silica capillaries under acidic conditions and solved this problem by oubly coating capillaries with Polybrene followed by chondroitin sulfate C. On the other hand, we demonstrated the usefulness of a special technique which uses a short, wider bore PTFE tube-attached capillary for the study of the effect of depolymerization, in order to minimize sample amount.