Practical ion mobility spectrometer apparatus and methods for chemical and/or biological detection
First Claim
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1. An ion mobility spectrometer (IMS) apparatus comprising:
- a) components including an inlet accepting samples;
an ionization source ionizing some of the samples;
a drift tube separating ions based on ion mobility;
an ion detector detecting ions;
b) dielectric materials that have thermal conductivity at least that of aluminum nitride (AIN) in the construction of the drift tube, andc) a heat pump that adds or removes heat from the components for heating and/or cooling the apparatus.
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Abstract
This invention describes an ion mobility spectrometer and operational methods for chemical analysis. The ion mobility spectrometer allows for continuous operation and rapid temperature control to reach designed operational conditions, as well as analysis under a temperature gradient.
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Citations
14 Claims
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1. An ion mobility spectrometer (IMS) apparatus comprising:
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a) components including an inlet accepting samples;
an ionization source ionizing some of the samples;
a drift tube separating ions based on ion mobility;
an ion detector detecting ions;b) dielectric materials that have thermal conductivity at least that of aluminum nitride (AIN) in the construction of the drift tube, and c) a heat pump that adds or removes heat from the components for heating and/or cooling the apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for operating an IMS comprising:
- adjusting an IMS temperature to the first starting operating temperature;
ramping the temperature to the ending operating temperature at a designed rate using a heat pump that adds or removes heat from the IMS; and
obtaining ion mobility spectra while ramping the temperature. - View Dependent Claims (12, 13, 14)
- adjusting an IMS temperature to the first starting operating temperature;
Specification