DESORBER AND TRAP FOR TRACE DETECTION SYSTEM
A trap for an analysis device. The trap includes a body configured to be at least partially inserted into an inlet of a desorber assembly of the analysis device. The desorber is configured to selectively operate in a plurality of analysis modes. The body includes a first surface and a feature. The first surface is configured to receive, on a first region thereof, a sample of a substance of interest for analysis by the analysis device. The feature is located in a second region of the first surface and detectable by the desorber upon insertion into the inlet thereof. The feature is associated with one of the plurality of analysis modes.
1 . A trap for an analysis device, comprising:
a body configured to be at least partially inserted into an inlet of a desorber assembly of the analysis device, said desorber configured to selectively operate in a plurality of analysis modes, said body comprising:
a first surface configured to receive, on a first region thereof, a sample of a substance of interest for analysis by the analysis device; and
a feature located in a second region of said first surface and detectable by the desorber upon insertion into the inlet thereof, said feature associated with one of the plurality of analysis modes, wherein the analysis mode is selected from among the plurality of analysis modes based on an identification of the feature and includes at least one high temperature mode and at least one low temperature mode.
2 . The trap of claim 1 , where said body comprises a fiberglass mesh.
3 . The trap of claim 1 , wherein said body comprises a polytetrafluoroethylene (PTFE) coating.
4 . The trap of claim 1 , wherein said feature comprises an opaque portion in said body, said opaque portion configured to block a first transmission of light through said body.
5 . The trap of claim 4 , wherein said feature comprises a void in said body, said void configured to enable a second transmission of light to pass through said body.
6 . The trap of claim 14 , wherein said feature comprises one or more filters configured to detectably modify light passing through said body.
7 . The trap of claim 1 , wherein said feature comprises a two-dimensional bar code associated with the one of the plurality of analysis modes, said bar code being printed on the trap.
8 . The trap of claim 1 , wherein said body comprises a material configured to enable vaporization of the sample at temperatures of at least 300 degrees Celsius, wherein the desorber is configured to heat said body to a temperature of at least 300 degrees Celsius according to a first analysis mode of the plurality of analysis modes, and wherein the desorber is configured to heat said body to a temperature below 300 degrees Celsius according to a second analysis mode of the plurality of analysis modes.
9 . A desorber assembly for an analysis device, comprising:
an inlet configured to receive a trap having, on a first region thereof, a sample of a substance of interest for analysis, the analysis selected from a plurality of analysis modes, and a detectable feature located in a second region of the trap, wherein the detectable feature is associated with one of the plurality of analysis modes;
a sensor subsystem configured to detect the detectable feature upon insertion of the trap into said inlet; and
a heating subsystem configured to heat the sample according to the one of the plurality of analysis modes upon detecting the detectable feature and based upon the detectable feature, wherein the plurality of analysis modes includes at least one high temperature mode and at least one low temperature mode.
10 . The desorber assembly of claim 9 , wherein said sensor subsystem comprises:
a light source configured to generate a transmission of light; and
a light sensor configured to:
detect the transmission of light when it passes through the detectable feature of the trap, and
detect a blocking of the transmission of light when it is blocked by the detectable feature of the trap.
11 . The desorber assembly of claim 10 , wherein said sensor subsystem comprises a plurality of light sensors respectively configured to:
detect the transmission of light when it passes through the detectable feature of the trap at a plurality of locations in the second region, and
detect a blocking of the transmission of light when it is blocked by the detectable feature of the trap.
12 . The desorber assembly of claim 11 , wherein detection of the transmission of light by a subset of said plurality of light sensors is associated with a first analysis mode of the plurality of analysis modes.
13 . The desorber assembly of claim 12 , wherein detection of the transmission of light by a different subset of said plurality of light sensors is associated with a second analysis mode of the plurality of analysis modes.
14 . The desorber assembly of claim 11 , wherein said plurality of light sensors is located bilaterally symmetric with relative to a centerline of said desorber such that the detectable features of the trap are detected upon insertion of the trap into said inlet in at least two different orientations.
16 . The desorber assembly of claim 11 , wherein said plurality of light sensors are respectively configured to selectively detect the transmission of light and the blocking of the transmission of light.
17 . The desorber assembly of claim 10 , wherein said light source comprises at least one of a light emitting diode (LED), fluorescent lamp, an incandescent lamp, and a light amplification by stimulated emission of radiation (LASER) configured to direct a beam of light toward the trap.
18 . The desorber assembly of claim 10 , wherein said light sensor comprises at least one of a photodiode, a phototransistor, a photoresistor, and a wavelength specific receiver.
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