Patent ID: 6423120
Filing Date: 2002-07-23
Classification: G01N

Abstract:
A sample introduction apparatus for use in providing a sample to a chromatographic apparatus, the chromatographic apparatus having a separation column and a heater, the separation column being adapted to receive a mixture of a carrier gas and at least a portion of the sample, the heater being adapted to heat the mixture received within the separation column, said sample introduction apparatus comprising:a first wall defining a first channel, said first channel being configured to receive a sample to be provided to a chromatographic apparatus and being adapted to engage in fluid communication with the separation column of the chromatographic apparatus; a coating of semi-conductive material arranged adjacent to at least a portion of said first wall; and a heater controller electro-magnetically communicating with said coating and configured to increase a temperature of said coating such that said coating, in response to receiving electro-magnetic energy from said heater controller, increases in temperature, thereby increasing a temperature of the sample, wherein said heater controller comprises a magnetron and waveguide, said magnetron and said waveguide being configured to generate microwaves and to provide said microwaves to said coating such that the temperature of the sample increases.