Sampling of confined spaces

• US 8,207,497 B2
• Filed: 05/07/2010
• Issued: 06/26/2012
• Est. Priority Date: 05/08/2009
• Status: Active Grant

• Current Assignee: Bruker Scientific LLC (Bruker Corporation)
• Original Assignee: IonSense, Inc. (Bruker Corporation)
• Inventors: Musselman, Brian D.
• Primary Examiner(s): Souw, Bernard E
• Application Number:
  US12/776,034
• Publication Number:
  US 20100294925A1
• Time in Patent Office: 781 Days
• Field of Search: 250/281, 250/282, 250/288, 250/423.R, 250/423, 250/429, 250/442.11, 324/459, 324/464, 324/465, 73/232, 73/232.2, 73/232.5, 73/233.7
• US Class Current: 250/288
• CPC Class Codes: G01N 1/2214 by sorption
• CPC Class Codes: G01N 1/2226 Sampling from a closed space, e.g. food package, head space
• CPC Class Codes: G01N 1/2273 Atmospheric sampling
• CPC Class Codes: G01N 2001/022 sampling for security purposes, e.g. contraband, warfare agents
• CPC Class Codes: G01N 27/62 by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
• CPC Class Codes: H01J 49/0027 Methods for using particle spectrometers
• CPC Class Codes: H01J 49/0409 Sample holders or containers containers for retaining a material to be analyzed, B01L3/50, for DNA, C12Q1/6834, for biological materials, G01N33/543
• CPC Class Codes: H01J 49/10 Ion sources; Ion guns

Abstract

In various embodiments of the invention, a cargo container can be monitored at appropriate time intervals to determine that no controlled substances have been shipped with the cargo in the container. The monitoring utilizes reactive species produced from an atmospheric analyzer to ionize analyte molecules present in the container which are then analyzed by an appropriate spectroscopy system. In an embodiment of the invention, a sorbent surface can be used to absorb, adsorb or condense analyte molecules within the container whereafter the sorbent surface can be interrogated with the reactive species to generate analyte species characteristic of the contents of the container.

Claims

1. A container for analyzing a cargo comprising:

the container, wherein the container can be substantially confined on all sides, wherein the container includes at least a distal end and a proximal end; and

an atmospheric ionization sorbent module (AISM) including a sorbent surface and a region in front of the sorbent surface, wherein the AISM is located one or both of within the container and outside the container, wherein the AISM is adapted to be connected to one or more sites inside the container, wherein the AISM is adapted to receive an atmospheric ionizer directed at the region in front of the sorbent surface, wherein the atmospheric ionizer forms ions of molecules present one or both in the region in front of the sorbent surface and on the sorbent surface, wherein the AISM is adapted to connect to a spectroscopy system, wherein the spectroscopy system analyzes the ions formed by the atmospheric ionizer.

2. The container of claim 1, wherein one or more tubes located in the container connect the AISM to one or both the distal end and the proximal end.

3. The container of claim 1, wherein the AISM is adapted to receive a gas ion separator (GIS) connected to the spectroscopy system, wherein the GIS transports the ions into the spectroscopy system.

4. The container of claim 1, further comprising a temperature control element to one or both cause condensation on the sorbent surface and cause desorption of molecules from the sorbent surface.

5. The container of claim 4, wherein to condense molecules on the sorbent surface the temperature control element lowers the temperature of the sorbent surface below the ambient temperature of between:

a lower limit of approximately ten degrees Celsius; and

an upper limit of approximately one hundred degrees Celsius.

6. The container of claim 4, wherein to cause desorption of molecules from the sorbent surface the temperature control element raises the temperature of the sorbent surface above the ambient temperature of between:

a lower limit of approximately 1×

10¹ Celsius; and

an upper limit of approximately 1×

10² Celsius.

7. The container of claim 2, further comprising a partition, wherein the partition separates the proximal end from the distal end, wherein the proximal end has a first atmosphere, wherein the distal end has a second atmosphere, wherein molecules in one or both the first atmosphere and the second atmosphere are transported through the one or more tubes and ionized by the atmospheric ionizer in the region in front of the sorbent surface and analyzed by the spectroscopy system.

8. The container of claim 2, wherein one or more molecules travel through one or more tubes located in the container connecting one or both the distal end and the proximal end to the region in front of the sorbent surface and wherein the one or more molecules are one or more of absorbed, adsorbed and condensed on the sorbent surface.

22. The system of claim 8, wherein the one or more GIS inlet tubes are built into the substructure of the cargo container.

9. A system for determining the presence of controlled substances in a cargo container comprising:

(a) receiving the cargo container holding cargo, wherein the cargo container is substantially confined on all sides, wherein the cargo container includes;

a distal end;

a proximal end;

one or more atmospheric ionization sorbent modules (AISM) containing one or more sorbent surfaces and one or more regions in front of the one or more sorbent surfaces, wherein the one or more AISM are located one or both within the cargo container and outside the cargo container, wherein the one or more AISM are adapted to receive one or more atmospheric ionizers, wherein the one or more AISM are adapted to receive one or more gas ion separator (GIS) connected to one or more spectroscopy system; and

one or more tubes located in the container connecting one or both the distal end and the proximal end to the region in front of the sorbent surface;

(b) coupling one or more atmospheric ionizer to the one or more AISM, wherein the one or more atmospheric ionizers are directed at the one or more regions in front of the one or more sorbent surface, wherein the one or more atmospheric ionizers form ions of molecules present in one or both the one or more regions in front of the one or more sorbent surfaces and on the one or more sorbent surfaces;

(c) coupling one or more gas ion separator (GIS) in the one or more regions in front of the sorbent surfaces, wherein the one or more GIS are coupled to one or more spectrometers, wherein the one or more GIS transport the ions into the one or more spectrometers, wherein the one or more spectrometers analyze the ions;

(d) receiving analysis data from the one or more spectrometers; and

(e) correlating the analysis with controlled substances to determine the presence of controlled substances in the cargo container.

10. The system of claim 9, wherein the one or more sorbent surface is exposed to the atmosphere inside the cargo container during a period of time during a cargo journey time.

11. The system of claim 10, wherein the correlating involves an analysis in view of one or both the period of time the sorbent surface is exposed and the cargo journey time.

12. The system of claim 10, wherein a chemical code is applied to the sorbent surface at intervals during the cargo journey time to verify the integrity of the sorbent surface.

13. The system of claim 9, wherein the sorbent surface includes a chemical code to verify the integrity of the sorbent surface.

14. The system of claim 13, wherein one or more atmospheric ionizer is directed onto the chemical code of the sorbent surface to verify the integrity of the sorbent surface.

15. The system of claim 9, wherein a first sorbent surface is connected by a first tube to a first compartment in the cargo container, wherein a second sorbent surface is connected by a second tube to a second compartment in the cargo container.

16. The system of claim 15, wherein the first sorbent surface and the second sorbent surface undergo spectrometric analysis to one or both sample the first and the second compartments within the cargo container and compare the analysis between the first and the second compartments within the cargo container.

17. The system of claim 10, wherein two or more sorbent surfaces are exposed during different portions of the period of time.

18. The system of claim 9, wherein the temperature of one or more of the sorbent surfaces is held during at least a portion of the period of time at between:

a lower limit of approximately 1×

10² degrees K; and

an upper limit of approximately 4×

10² degrees K.

19. The system of claim 9, wherein one or more of the sorbent surfaces is regenerated by heating to between:

a lower limit of approximately 3×

10² degrees K; and

an upper limit of approximately 5×

10² degrees K.

20. The system of claim 9, wherein the spectroscopy system is selected from the group consisting of an ion mobility spectrometer, a mass spectrometer, an infrared spectrometer, a near-infrared spectrometer, a differential mobility spectrometer, a digital mass spectrometer and a chemical analyzer.

21. The system of claim 9, wherein air is one or both blown and sucked from one or more first compartments within the cargo container into one or more second compartments.

23. A method of interdicting one or more controlled substances when shipping cargo in a container, comprising:

(a) receiving the container including;

one or more atmospheric ionization sorbent module (AISM) located inside the container prior to shipping of the container;

(b) loading cargo into the container;

(c) transporting the container to a destination;

(d) locating one or more atmospheric ionizer on or near the container at one or more times during transporting, wherein the one or more atmospheric ionizer is located such that a plurality of analyte species are formed when the reactive species impinge the one or more AISM;

(e) locating one or more spectrometers on or near the container, wherein the one or more spectrometers are located such that the plurality of analyte species formed at the one or more AISM enter the one or more spectrometers;

(f) detecting the analyte species with the one or more spectrometers to determine if one or more controlled substances are present in the container;

(g) communicating one or both the absence and the presence of one or more controlled substances in the container to a base station, wherein the information communicated includes one or more of;

date and time of detection;

shipment method, location of shipment and controlled substances detected; and

(h) interdiction of containers containing the one or more controlled substances.