Negative temperature profiling using microwave GC apparatus
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United States of America Patent
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Nov 6, 2007
Grant Date -
Sep 15, 2005
app pub date -
Mar 10, 2004
filing date -
Mar 10, 2004
priority date (Note) -
Expired
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Abstract
A method is disclosed for performing GC separations using a separation protocol including at least one negative temperature ramp, where the negative temperature ramp is controlled either by the introduction of a gaseous coolant at a controlled and adjustable rate or by the introduction of the coolant along with the application of microwave radiation to a column capable of absorbing microwave radiation, where the rate of coolant introduction or the rate of coolant introduction and radiation introduction is sufficient to achieve a desired rate of cooling.
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