摘要
基于微机电系统(Micro-electro-mechanical system, MEMS)技术设计制造了一种含有椭圆微柱阵列的半填充微色谱柱,此微色谱柱内壁以孔径约2 nm、具有大比表面积的介孔二氧化硅(Mesoporous silica,MS)薄膜为固定相。在相同进样量下,采用程序升温模式进行测试,以介孔二氧化硅为固定相的微色谱柱,可实现烷烃(C5～C10)的基线分离,其中戊烷与溶剂(杂质)峰分离度达3.6,与以二甲基硅油(Polydimethylsiloxane,PDMS)为固定相的微色谱柱相比,辛烷理论塔板数提高了46%,可达14458 plates,壬烷的峰面积提高了349.8%。
A micro-fabricated semi-packed gas chromatography(μGC) column embedded micro-elliptical pillars was fabricated based on micro-electro-mechanical system(MEMS) technique. The mesoporous silica film(MS) with 2 nm pore size and large specific surface area was coated on the inner surface of the μGC column as stationary phase. Under the same injection volume and the temperature-programmed conditions, the baseline separation of alkanes(C5-C10) was realized by the μGC column used MS as stationary phase, and the resolution of pentane and solvent(impurity) could be as large as 3.6. Compared with the GC column used polydimethylsiloxane(PDMS) as stationary phase, the number of theoretical plates of octane had a 46% increase, which could be up to 14458 plates. Meanwhile, the peak area of nonane increased by 349.8%.
作者
杨雪蕾
赵斌
冯飞
周海梅
杨恒
李昕欣
YANG Xue-Lei;ZHAO Bin;FENG Fei;ZHOU Hai-Mei;YANG Heng;LI Xin-Xin(State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences, Shanghai 200050, China;Center of Materials Science and Optoelectronic Engineering,University of Chinese Academy of Sciences, Beijing 100049, China)
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
2019年第6期832-837,共6页
Chinese Journal of Analytical Chemistry
基金
国家重点研发计划项目(No.2018YFA0208504)
中国科学院战略性先导科技专项(A类)(No.XDA22020504)
中国科学院科技服务网络计划(No.KFJ-STS-QYZD-090)资助
中科院前沿科学重点研究项目(No.QYZDJ-SSW-JSC001)
上海市科委项目(No.18DZ1100601)~~
关键词
介孔二氧化硅
半填充微色谱柱
微机电系统
Mesoporous silica
Micro semi-packed column
Micro-electro-mechanical system
