GAS CHROMATOGRAPH-ION MOBILITY SPECTROMETRY COMBINED EQUIPMENT

    公开(公告)号:US20200240961A1

    公开(公告)日:2020-07-30

    申请号:US16714799

    申请日:2019-12-16

    IPC分类号: G01N30/44 G01N30/72

    摘要: The present disclosure discloses a gas chromatograph-ion mobility spectrometry combined equipment, including: a gas chromatograph device for pre-separating a to-be-detected sample to form a pre-separated sample; an ion mobility spectrometry device in fluid communication with an outlet of the gas chromatograph device for detecting the pre-separated sample; and a gas circulating device in fluid communication with a discharged gas interface of the ion mobility spectrometry device for processing a discharged gas from the ion mobility spectrometry device, wherein the gas circulating device is further in gas communication with the gas chromatograph device for conveying a part of the discharged gas to the gas chromatograph device to serve as a carrier gas, which drives the to-be-detected sample to enter the gas chromatograph device. The miniaturization and the portability of the gas chromatograph-ion mobility spectrometry combined equipment are improved.

    DARKROOM TYPE SECURITY INSPECTION APPARATUS AND METHOD

    公开(公告)号:US20170138902A1

    公开(公告)日:2017-05-18

    申请号:US15271713

    申请日:2016-09-21

    IPC分类号: G01N27/62 G01N1/22 G01N30/72

    摘要: The present invention discloses darkroom type security inspection apparatus and method. An apparatus comprises a housing constituting a closed darkroom, and assemblies disposed inside the housing. The assemblies disposed inside the housing are communicated by fittings or connectors and comprises: a sampling assembly comprising a sample collecting unit and a conveyer unit configured to convey an object to be inspected into the sample collecting unit; a sample processing assembly configured to concentrate and analyze the sample; and, an inspecting assembly configured to inspect composition of the sample by means of a gas chromatographic-ion mobility spectrometer (GC-IMS) or a separated ion mobility spectrometer (IMS). The security inspection apparatus of the present invention can perform the sampling easy, rapidly and effectively and perform the inspection accurately and rapidly without destroying and unpacking an object to be inspected, and thus is suitable for requirements of on-site rapid inspection of forbidden items in the airport, customs and the likes.

    SAMPLE INJECTION DEVICE AND METHOD FOR SAMPLE COLLECTION AND SAMPLE THERMAL DESORPTION, AND TRACE DETECTION APPARATUS

    公开(公告)号:US20170176299A1

    公开(公告)日:2017-06-22

    申请号:US15117086

    申请日:2015-12-28

    摘要: The present invention discloses a sample injection device for sample collection and sample thermal desorption. The device comprises: a sample collection structure; a piston type adsorber having an adsorption cavity capable of being arranged to be in communication with the sample collection structure; a piston cylinder defining a piston chamber that is configured for accommodating the piston type adsorber and configured to be in communication with the adsorption cavity; a thermal desorption chamber that is configured to be in communication with the adsorption cavity and the piston chamber and is configured to thermally desorb the sample adsorbed in the adsorption cavity; and a pump that is configured to be in communication with the piston chamber via a conduit and is configured to pump a sample diffused in an ambient gas into the adsorption cavity through the sample collection structure, the adsorption cavity being configured to adsorb the sample collected by the sample collection structure; the piston type adsorber is configured to be movable between a sample collecting position where the adsorption cavity is located outside the thermal desorption chamber and in communication with the sample collection structure so as to adsorb the sample collected by the sample collection structure and a sample desorbing position where the adsorption cavity is located inside the thermal desorption chamber so that the adsorbed sample is thermally desorbed in the thermal desorption chamber. There are also provided a method of collecting and desorbing a sample by using the abovementioned device, and a trace detection apparatus.

    PULSED SAMPLING-BASED ION MOBILITY SPECTROMETER AND SNIFFER

    公开(公告)号:US20210404988A1

    公开(公告)日:2021-12-30

    申请号:US16626767

    申请日:2019-06-12

    IPC分类号: G01N27/622 G01N1/22

    摘要: There are provided an ion mobility spectrometer and a sniffer. The ion mobility spectrometer includes: an ion migration tube; a sampling gas path having a sampling device configured to temporarily store a sample gas collected by a sampling head in a sampling pipe; a sample introduction gas path having two ends in communication with the gas inlet and outlet of the ion migration tube respectively, and configured to introduce a carrier gas within the ion migration tube into the sampling pipe and to carry a sample gas temporarily stored in the sampling pipe into the ion migration tube; and a valve assembly configured to only allow gas to flow from the sampling device to the sampling pipe in a sampling state, and to only allow gas to flow from the ion migration tube through the sampling pipe back to the ion migration tube in a sample introduction state.

    PREPARATION AND FEED APPARATUS OF STANDARD SAMPLE FOR CALIBRATION OF TRACE-ANALYSIS INSTRUMENT

    公开(公告)号:US20180158659A1

    公开(公告)日:2018-06-07

    申请号:US15786389

    申请日:2017-10-17

    摘要: Embodiments of the present disclosure relate to a preparation and feed apparatus of a standard sample for calibration of a trace-analysis instrument, and especially to a preparation and feed apparatus of a standard sample for calibration of a gas chromatograph-ion mobility spectrometer. When the trace-analysis instrument is being calibrated by taking advantage of the preparation and feed apparatus according to embodiments of the disclosure, it is unnecessary to use an additional dedicated tool and steps to prepare the sample for testing and to use an organic solvent or a dedicated sample application/dispensing tool, resulting in that the trace-analysis instrument is simple and convenient to carry and use, and the substance for calibration is also convenient to store and exchange; moreover, the trace-analysis instrument is also safe, reliable and environmentally friendly.

    GAS CHROMATOGRAPHY-ION MOBILITY SPECTROMETRY APPARATUS

    公开(公告)号:US20180164262A1

    公开(公告)日:2018-06-14

    申请号:US15827703

    申请日:2017-11-30

    IPC分类号: G01N30/64 H01J49/06 G01N27/62

    摘要: The present disclosure provides a gas chromatography-ion mobility spectrometry apparatus, including a housing, an injection port mounted to and connected with the housing and configured for input of a gas containing a sample therein, a multicapillary column configured for separation of a gas substance and an ion mobility tub configured for analysis of the gas substance. The gas chromatography-ion mobility spectrometry apparatus further includes: a gas path part connected with the ion mobility tube and configured for providing the gas to the ion mobility tube and receiving a gas discharged from the ion mobility tube; and a buffer base part detachably mounted to the housing and configured to isolation vibration outside the buffer base part, the ion mobility tube being disposed on the buffer base part, wherein the gas path part is mounted in an interior space of the buffer base part.