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    Sensor and method for rapid in situ detection of toxic gases
    1.
    发明授权
    Sensor and method for rapid in situ detection of toxic gases 有权

    公开(公告)号：US12066419B1

    公开(公告)日：2024-08-20

    申请号：US16531613

    申请日：2019-08-05

    申请人： Intelligent Optical Systems, Inc.

    发明人： Manal Beshay

    IPC分类号： G01N33/00

    CPC分类号： G01N33/0057 ,  G01N33/0052

    摘要： A sensor and method for the rapid detection of fluoride containing gaseous species specifically the chemical warfare agents Sarin and Soman nerve gas, in which a chemically sensitive composition containing dye indicator molecules complexed with a heavy metal salt is exposed to an environment under surveillance for toxic gasses. In one embodiment the sensing composition is introduced into a polymer-based substrate. The detection composition reacts with hydrogen fluoride which is a decomposition by-product of Sarin and Soman gas so as to change the color of the dye indicator, in one embodiment being pentamethoxy red, that is to change the color of the polymer-based substrate from colorless to a dark purple color. The complex of pentamethoxy red with the exemplary heavy metal salt, zirconyl chloride, is specific for Sarin and Soman nerve gas; it does not react to certain other toxic gases. In various embodiments a hydrolyzing agent is introduced in the polymer-based substrate to improve the detection reaction sensitivity and to increase the reaction rate and decrease the detection time for sensor chemistry.

    Methods and apparatuses for generating trace vapors
    2.
    发明授权
    Methods and apparatuses for generating trace vapors 有权

    公开(公告)号：US11754583B2

    公开(公告)日：2023-09-12

    申请号：US16276398

    申请日：2019-02-14

    申请人： GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE NAVY

    发明人： Greg Collins ,  Susan Rose-Pehrsson ,  Michael Malito ,  Braden C. Giordano ,  Adam L. Lubrano ,  Mark H. Hammond ,  Cy Tamanaha

    IPC分类号： G01N35/10 ,  G01N33/00 ,  G01N1/38 ,  G01N35/00 ,  G01N1/00 ,  G01N1/28

    CPC分类号： G01N35/1097 ,  G01N1/38 ,  G01N33/0057 ,  G01N35/1004 ,  G01N2001/002 ,  G01N2001/2893 ,  G01N2035/00277 ,  G01N2035/00455

    摘要： Apparatuses and methods for generating trace vapors are provided. The apparatus includes a controller and an oven. The controller includes: a processor, a memory storing at least one control program, a clean solution supply port constructed to output a clean solution, an analyte solution supply port constructed to output an analyte solution, a carrier gas inlet port constructed to receive a carrier gas, and a plurality of carrier gas supply controllers constructed to output the carrier gas. The oven includes a clean manifold, an analyte manifold, a clean solution nebulizer constructed to: receive the clean solution from the clean solution supply port, and the carrier gas from one of the plurality of carrier gas supply controllers, and output a clean solution vapor stream comprising the clean solution and the carrier gas to the clean manifold, an analyte solution nebulizer constructed to: receive the analyte solution from the analyte solution supply port and the carrier gas from another one of the plurality of carrier gas supply controllers, and output an analyte solution vapor stream comprising the analyte solution and the carrier gas to the analyte manifold, a pneumatic valve controllably connected to the processor and communicatively connected to the clean manifold and the analyte manifold, and an output supply port communicatively connected to the pneumatic valve. The controller is configured to operate the pneumatic valve to allow the clean vapor solution or the analyte vapor solution to enter the chamber and be provided to the output supply port.

    METHODS AND APPARATUSES FOR GENERATING TRACE VAPORS
    4.
    发明申请
    METHODS AND APPARATUSES FOR GENERATING TRACE VAPORS 审中-公开

    公开(公告)号：US20190250184A1

    公开(公告)日：2019-08-15

    申请号：US16276398

    申请日：2019-02-14

    申请人： GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE NAVY

    发明人： Greg Collins ,  Susan Rose-Pehrsson

    IPC分类号： G01N35/10 ,  G01N33/00

    CPC分类号： G01N35/1097 ,  G01N33/0057 ,  G01N35/1004 ,  G01N2001/002 ,  G01N2035/00277 ,  G01N2035/00455

    摘要： Apparatuses and methods for generating trace vapors are provided. The apparatus includes a controller and an oven. The controller includes: a processor, a memory storing at least one control program, a clean solution supply port constructed to output a clean solution, an analyte solution supply port constructed to output an analyte solution, a carrier gas inlet port constructed to receive a carrier gas, and a plurality of carrier gas supply controllers constructed to output the carrier gas. The oven includes a clean manifold, an analyte manifold, a clean solution nebulizer constructed to: receive the clean solution from the clean solution supply port, and the carrier gas from one of the plurality of carrier gas supply controllers, and output a clean solution vapor stream comprising the clean solution and the carrier gas to the clean manifold, an analyte solution nebulizer constructed to: receive the analyte solution from the analyte solution supply port and the carrier gas from another one of the plurality of carrier gas supply controllers, and output an analyte solution vapor stream comprising the analyte solution and the carrier gas to the analyte manifold, a pneumatic valve controllably connected to the processor and communicatively connected to the clean manifold and the analyte manifold, and an output supply port communicatively connected to the pneumatic valve. The controller is configured to operate the pneumatic valve to allow the clean vapor solution or the analyte vapor solution to enter the chamber and be provided to the output supply port.