【摘要】 采用MEMS技术设计了一种微型半填充气相色谱柱,运用深反应离子刻蚀(DRIE)技术,对器件刻蚀深250μm,其微型色谱柱总长度为1m,宽度为160μm,槽道内部填充20μm×20μm微型柱。采用静态涂覆法对色谱柱涂覆SE—54固定相。通过理论模拟分析柱结构,得出微型半填充色谱柱具有高分离效率能力。在对酯类化合物分离测试中,选取了含酯类的化学战剂模拟剂和几种酯类食品添加剂,分别对其进行分离,所有组分在75s内被完全分离。实现了微型半填充色谱柱快速并具有高分离率。更多还原

【Abstract】 A kind of semi-packed gas chromatography( GC) column is fabricated based on micro-electromechanical system( MEMS) technique,by using deep reactive ion etching( DRIE) technology to fabricate 250 μmdeep,1m long and 160 μm wide,filling with 20 μm × 20 μm micro column in channel to form semi-packed GC column. SE—54 is coated on column by static coating method as stationary phase. Through theoretically simulating and analyzing column structure,it shows semi-packed GC column has high seperation efficiency. In separation,choose chemical warfare agents( CWA) simulants and food additives,which contains ester to separate respectively,all samples are separated and test on ester components completely in 75 s. The result shows that the column achieves both fast speed and high separation rate.更多还原