Ultrafast Gas Chromatography on Single-Wall Carbon Nanotube Stationary Phases in Microfabricated Channels
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- 作者：Michael Stadermann ; Adam D. McBrady ; Brian Dick ; Vanessa R. Reid ; Aleksandr Noy ; Robert E. Synovec ; Olgica Bakajin
- 刊名：Analytical Chemistry
- 出版年：2006
- 出版时间：August 15, 2006
- 年：2006
- 卷：78
- 期：16
- 页码：5639 - 5644
- 全文大小：276K
- 年卷期：v.78,no.16(August 15, 2006)
- ISSN：1520-6882
文摘
The key to rapid temperature programmed separationswith gas chromatography are a fast, low-volume injectionand a short microbore separation column with fast resistive heating. One of the major problems with the reductionof column dimensions for micro gas chromatography isthe availability of a stationary phase that provides goodseparation performance. In this report, we present thefirst integration of single-wall carbon nanotubes (SWNTs)as a stationary phase into 100 
m × 100 m square and50-cm-long microfabricated channels. The small size ofthis column with integrated resistive heater and therobustness of the SWNT phase allow for fast temperatureprogramming of up to 60 
C/s. A combination of the fasttemperature programming and the narrow peak width ofsmall-volume injections that can be obtained from a high-speed, dual-valve injection system allows for rapid separations of gas mixtures. We demonstrate highly reproducibleseparations of four-compound test mixtures on thesecolumns in less than 1 s using fast temperature programming.
m × 100 m square and50-cm-long microfabricated channels. The small size ofthis column with integrated resistive heater and therobustness of the SWNT phase allow for fast temperatureprogramming of up to 60 C/s. A combination of the fasttemperature programming and the narrow peak width ofsmall-volume injections that can be obtained from a high-speed, dual-valve injection system allows for rapid separations of gas mixtures. We demonstrate highly reproducibleseparations of four-compound test mixtures on thesecolumns in less than 1 s using fast temperature programming.