Abstract: A cooling-assisted inside needle capillary adsorption trap device for sampling and delivering volatile and semi-volatile analytes to an analytical device is disclosed. The device includes an inside needle capillary adsorption trap having a first end and a second end and a side aperture located between the first and second ends. The side aperture enables entering the carrier gas into the INCAT and flowing upon the surface of the sorbent (when injected into the GC injector) for complete releasing and eluting of the analytes from the interior surface of the needle. A sorbent is multiwall carbon nanotube/polyaniline and is coated onto the interior surface of the needle between the second end and the side aperture to entrap an analyte within a sample. The cooling-assisted inside needle capillary adsorption trap device also includes a cooling device configured to cool the sorbent.

Abstract: A vacuum-assisted in-needle capillary adsorption trap (VA-INCAT) device for sampling and delivering materials to an analytical device is disclosed. A sorbent is multiwall carbon nanotube/polyaniline (PANI/MWCNT) nanocomposite and is coated within an interior space of the needle between the second end and the side aperture to entrap an analyte within a sample. The VA-INCAT device also includes a vacuum device configured to vacuum the vacuum flask to improve the extraction of the analytes vapors from the sample matrix to the sorbent bed.

Abstract: A vacuum-assisted in-needle capillary adsorption trap (VA-INCAT) device for sampling and delivering materials to an analytical device is disclosed. A sorbent is multiwall carbon nanotube/polyaniline (PANI/MWCNT) nanocomposite and is coated within an interior space of the needle between the second end and the side aperture to entrap an analyte within a sample. The VA-INCAT device also includes a vacuum device configured to vacuum the vacuum flask to improve the extraction of the analytes vapors from the sample matrix to the sorbent bed.

Abstract: A cooling-assisted inside needle capillary adsorption trap device for sampling and delivering volatile and semi-volatile analytes to an analytical device is disclosed. The device includes an inside needle capillary adsorption trap having a first end and a second end and a side aperture located between the first and second ends. The side aperture enables entering the carrier gas into the INCAT and flowing upon the surface of the sorbent (when injected into the GC injector) for complete releasing and eluting of the analytes from the interior surface of the needle. A sorbent is multiwall carbon nanotube/polyaniline and is coated onto the interior surface of the needle between the second end and the side aperture to entrap an analyte within a sample. The cooling-assisted inside needle capillary adsorption trap device also includes a cooling device configured to cool the sorbent.