Abstract: A device and procedure are described that can be used for improved sampling of traces such as for explosive trace screening, by precollection and preconcentration of trace samples of vapor and particulate matter from air. The device is unique in its ability to collect both solid and vapor traces.

Abstract: A device and procedure are described that can be used for improved sampling of traces such as for explosive trace screening, by precollection and preconcentration of trace samples of vapor and particulate matter from air. The device is unique in its ability to collect both solid and vapor traces.

Abstract: A hydrogen containing tank having an inside wall that is uniquely bonded to a hydride core which is a porous hydrogen containing core material. The high hydrogen content capability and high thermal conductivity properties accommodate rapid release and intake of hydrogen gas. Low temperatures and high hydrogen charging discharging rates help to alleviate the use of hydrogen as an energy source in numerous applications.

Abstract: A hydrogen containing tank having an inside wall that is uniquely bonded to a hydride core which is a porous hydrogen containing core material. The high hydrogen content capability and high thermal conductivity properties accommodate rapid release and intake of hydrogen gas. Low temperatures and high hydrogen charging discharging rates help to alleviate the use of hydrogen as an energy source in numerous applications.

Abstract: A vapor collection system. The system includes one or more walls that define a chamber for receiving inspected items, at least one pipe adapted to eject a gas jet within the chamber, the gas jet being provided at an angle relative to a normal to the wall of the chamber, at the point at which the pipe enters the chamber, at least one tube adapted to remove gas samples from the chamber, and an analysis unit adapted to determine whether the gas samples include one or more particulates.

Abstract: A vapor collection system. The system includes one or more walls that define a chamber for receiving inspected items, at least one pipe adapted to eject a gas jet within the chamber, the gas jet being provided at an angle relative to a normal to the wall of the chamber, at the point at which the pipe enters the chamber, at least one tube adapted to remove gas samples from the chamber; and an analysis unit adapted to determine whether the gas samples include one or more particulates.

Abstract: A method of collecting vapors from an inspected item (106). The method includes providing an item (106) for inspection, forming a chamber (136) around the inspected item (106), with a volume determined responsive to the inspected item (106), applying one or more vapor release measures to the dimensions of the inspected item (106), removing gas samples from the formed chamber (136), and analyzing the removed gas samples for traces of one or more chemicals.

Abstract: A method for collectively sampling a plurality of cargo items for contaminants such as chemical residues. The items are placed in a generally airtight chamber and agitated physically to release particulates and vapors from the surfaces and interior of the items. The methods of physical agitation include vibrating the items, and pressurizing and depressurizing the chamber, with the pressurizing being done by introducing bursts of high pressure air into the chamber and by directing jets of high pressure air at the cargo. Optionally, the high pressure air may be heated or mixed with solvent vapors. This physical agitation drives particulates and vapors of contaminants into suspension in the air in the chamber. Air withdrawn during depressurization is passed through a collection system to collect the particulates and vapors for subsequent analysis.

Abstract: A method for collectively sampling a plurality of cargo items for contaminants such as chemical residues. The items are placed in a generally airtight chamber and agitated physically to release particulates and vapors from the surfaces and interior of the items. The methods of physical agitation include vibrating the items, and pressurizing and depressurizing the chamber, with the pressurizing being done by introducing bursts of high pressure air into the chamber and by directing jets of high pressure air at the cargo. Optionally, the high pressure air may be heated or mixed with solvent vapors. This physical agitation drives particulates and vapors of contaminants into suspension in the air in the chamber. Air withdrawn during depressurization is passed through a collection system to collect the particulates and vapors for subsequent analysis.