中文摘要：

用区段灌注技术及胶束电动毛细管柱色谱法并应用正交设计法研究及优化了6种二硝基甲苯异构体的分离条件。采用在30mmol·L^-1 SDS，10mmol·L^-1 Brij-35，6mmol·L^-1 β-CD，20mmol·L^-1硼砂及5mmol·L^-1磷酸二氢钠溶液组成的缓冲溶液中对6种二硝基甲苯异构体进行分离，进样时间6s，分离电压18kV，分离效果好，基线平稳，背景小，检测灵敏度高。

英文摘要：

Separation of 6 isomers of dinitrotoluene （DNT） was studied by the capillary partial filling （CPF） micellar electrokinetic capillary column chromatography （MECC） and conditions for the separation were optimized by using the method of orthogonal experimental design. A buffer mixture containing solutions of 30 mmol · L^-1 SDS, 10 mmol · L^-1 Brij 35, 6 mmol · L^-1 β-CD, 20 mmol · L^-1 borax and 5 mmol · L^-1 NaH2PO4 was used in the separation, and time of sample introduction of 6 s, as well as the separation voltage of 18 kV were adopted for the separation. Under the optimized conditions, stable and flat base line, low background, highly sensitive detection and high separation efficiency were achieved.