Patent ID: 8833140
Filing Date: 2014-09-16
Classification: B01J,G01N

Abstract:
1. A system for rapidly desorbing analytes from a carbonaceous sorbent powder for introduction into a gas chromatograph, the system comprising: a sealed desorption chamber; a desorption surface within the desorption chamber onto which the sorbent powder can be deposited, the sorbent powder having analytes adsorbed thereupon; a transport gas system configured to transport the sorbent powder with a transport gas into the desorption chamber and to deposit the sorbent powder onto the desorption surface as a substantially uniform layer of sorbent powder granules, the transport gas system being further configured to remove the sorbent powder from the desorption chamber after desorption of the analytes therefrom; a heating light source located outside of the desorption chamber; a window included in a wall of the deposition chamber and positioned so as to allow light from the heating light source to uniformly illuminate all of the uniform monolayer of sorbent powder, absorption of the heating light by the sorbent powder causing desorption of the analytes therefrom; and an analyte removal system configured to transport desorbed analytes away from the sorbent powder out of the desorption chamber, and into the gas chromatograph, said analyte removal system being distinct from said transport gas system.