The invention provides a GC mass spectrometry system, including a column for introducing a sample into the GC mass spectrometry system, a heating source for providing heat to the sample to be separated by the column, an ion source downstream from the heating source for ionizing the sample separated by the column, the ion source having a sensor for determining the temperature of the ion source, an interface coupled to the ion source sensor and the heating source wherein the interface provides a feedback loop between the ion source sensor and the heating source and the temperature of the ion source or the heating source can be tracked and altered during data acquisition. The invention also provides an apparatus for GC mass spectrometry, including a heating source for providing heat to a column for volatizing molecules to be separated by the column; an ion source downstream from the heating source for ionizing the sample separated by the column, the ion source having a sensor for determining the temperature of the ion source; and an interface for coupling the ion source sensor to the heating source wherein the interface provides a feedback loop between the sensor of the ion source and the heating source and the temperature of the ion source and the heating source can be altered during data acquisition. Methods of heating and volatilizing samples using the GC mass spectrometry system and apparatus are also disclosed.

 
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