Comprehensive Two-Dimensional Gas Chromatography coupled ...
Comprehensive Two-Dimensional Gas Chromatography coupled ...
Comprehensive Two-Dimensional Gas Chromatography coupled ...
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Single Stage versus 2-Stage Thermal Modulator<br />
GACID<br />
Single-Stage Air-Cooled<br />
A<br />
• limited quantitative analysis<br />
• Breakthrough observed<br />
• Peak Tailing as<br />
concentration inside<br />
modulator increases<br />
<strong>Two</strong>-Stage Air-Cooled<br />
B<br />
• Improved quantitative<br />
analysis<br />
• Minimal Breakthrough<br />
• No Peak Tailing<br />
0 5 10 15 20 25 30 35<br />
Time (s)<br />
1 ppm Octane<br />
09/23/2005 S. Scherer 18
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