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公开(公告)号：US20200240961A1
公开(公告)日：2020-07-30
申请号：US16714799
申请日：2019-12-16
发明人： Qingjun ZHANG , Yuanjing LI , Zhiqiang CHEN , Weiping ZHU , Yaohong LIU , Qiufeng MA , Ge LI , Biao CAO , Lili YAN
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.
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公开(公告)号：US20170138902A1
公开(公告)日：2017-05-18
申请号：US15271713
申请日：2016-09-21
发明人： Qingjun ZHANG , Yuanjing LI , Zhiqiang CHEN , Weiping ZHU , Ziran ZHAO , Qiufeng MA , Huishao HE , Jianping CHANG , Xiang ZOU , Linxia TAN
CPC分类号： G01N27/622 , G01N1/02 , G01N1/22 , G01N30/72 , G01N30/7206 , G01N2001/022 , G01N2001/024
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.
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3.发明申请公开(公告)号：US20190204270A1
公开(公告)日：2019-07-04
申请号：US16235315
申请日：2018-12-28
发明人： Qingjun ZHANG , Weiping ZHU , Yuanjing LI , Zhiqiang CHEN , Ziran ZHAO , Yinong LIU , Yaohong LIU , Qiufeng MA , Ge LI , Biao CAO , Nan BAI
CPC分类号： G01N27/622 , G01N30/20 , G01N30/6026 , G01N2030/025
摘要： A gas chromatography-ion mobility spectrometry detector and a hyphenated apparatus, the gas chromatography-ion mobility spectrometry detector comprises a gas chromatography mechanism and an ion mobility spectrometry mechanism. The gas chromatography mechanism comprises a chromatographic column and a sample injection port. The ion mobility spectrometry mechanism comprises a mobility tube and a connecting body, while a metal connection plate of the connecting body comprises a chromatographic metal plate, an ion mobility metal plate and a semipermeable membrane; on the ion mobility metal plate there are provided an ion mobility sample and carrier gas inlet, an ion mobility sample chamber and a sample injection port; the chromatography sample chamber and the ion mobility sample chamber are separated by semipermeable membrane.
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4.发明申请公开(公告)号：US20170176299A1
公开(公告)日：2017-06-22
申请号：US15117086
申请日：2015-12-28
发明人： Qingjun ZHANG , Yuanjing LI , Zhiqiang CHEN , Weiping ZHU , Huishao HE , Qiufeng MA , Yaohong LIU , Xiang ZOU , Jianping CHANG
CPC分类号： G01N1/02 , G01N1/2211 , G01N1/2214 , G01N1/2273 , G01N1/38 , G01N1/405 , G01N1/42 , G01N27/622 , G01N30/08 , G01N2030/128 , H01J49/0422 , H01J49/0459 , H01J49/0468
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.
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公开(公告)号：US20210404988A1
公开(公告)日：2021-12-30
申请号：US16626767
申请日：2019-06-12
发明人： Qingjun ZHANG , Yuanjing LI , Zhiqiang CHEN , Jianmin LI , Yinong LIU , Yaohong LIU , Lili YAN , Biao CAO , Weiping ZHU , Ge LI , Qiufeng MA , Qi MAO , Nan BAI
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.
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公开(公告)号：US20210048376A1
公开(公告)日：2021-02-18
申请号：US16989123
申请日：2020-08-10
发明人： Qingjun ZHANG , Yuanjing LI , Zhiqiang CHEN , Jianmin LI , Shangmin SUN , Yaohong LIU , Weiping ZHU , Qiufeng MA , Ge LI , Biao CAO , Zheng LIANG , Ying LI , Yu HU
摘要： A sampling probe, an automatic sampling device, and a container detection system are provided. The sampling probe includes: a mounting base; a housing mounted on the mounting base, a first accommodation chamber having an opening being defined in the housing, and an exhaust hole in communication with the first accommodation chamber and outside of the housing being formed in the housing; a coupling portion formed on an outer edge of the opening of the first accommodation chamber and formed to be hermetically coupled with an air outlet of a container; and a suction device mounted on the housing and configured to suck gas in the container into the first accommodation chamber through the air outlet. The sampling probe may collect the odor of toxic and harmful gases/hazardous chemicals inside the container at the air outlet of the container, without destroying the overall structure of the container.
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7.发明申请公开(公告)号：US20180158659A1
公开(公告)日：2018-06-07
申请号：US15786389
申请日：2017-10-17
发明人： Qingjun ZHANG , Yuanjing LI , Ziran ZHAO , Weiping ZHU , Nan BAI , Qiufeng MA
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.
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公开(公告)号：US20200209192A1
公开(公告)日：2020-07-02
申请号：US16727612
申请日：2019-12-26
发明人： Qingjun ZHANG , Yuanjing LI , Zhiqiang CHEN , Jianmin LI , Yaohong LIU , Weiping ZHU , Qiufeng MA , Biao CAO , Ge LI , Wei WANG , Lili YAN , Guangqin LI
摘要： Embodiments of the present disclosure provide an ion mobility spectrometer device. The ion mobility spectrometer device includes: an ion mobility tube, a sampling device, and a sampling and circulating gas path. The sampling device includes a solid sample desorption device and a gas sampling device. The solid sample desorption device is configured to process the solid sample into a first mixed gas containing the solid sample, and the gas sampling device is configured to process the gas sample into a second mixed gas containing the gas sample. The sampling and circulating gas path is configured to transfer the first mixed gas and/or the second mixed gas into the ion mobility tube for detection.
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9.发明申请公开(公告)号：US20190204188A1
公开(公告)日：2019-07-04
申请号：US16232672
申请日：2018-12-26
发明人： Qingjun ZHANG , Yuanjing LI , Zhiqiang CHEN , Ziran ZHAO , Yinong LIU , Yaohong LIU , Nan BAI , Ge LI , Qiufeng MA , Biao CAO , Weiping ZHU
CPC分类号： G01N1/2214 , B01D53/10 , B01D2259/40098 , G01N1/2205
摘要： A sampling adsorber, a heat desorption chamber device, a sampling apparatus and an analyzer apparatus. The sampling adsorber includes an outer barrel, which includes an outer barrel first end and an outer barrel second end, and a core located in the outer barrel, the core having a core first end and a core second end, and the outer barrel first end and the core first end are located at a same side of the sampling adsorber. The core includes an adsorbent portion configured to adsorb a sample and a core body portion, the adsorbent portion connected to the core body portion. Sizes of the outer barrel and the core are formed such that a gap is provided between them to allow external gas to enter the gap through the adsorbent portion and to subsequently be discharged from a downstream portion of the gap.
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公开(公告)号：US20180164262A1
公开(公告)日：2018-06-14
申请号：US15827703
申请日：2017-11-30
发明人： Qingjun ZHANG , Yuanjing LI , Ziran ZHAO , Weiping ZHU , Huishao HE , Qiufeng MA , Xiang ZOU , Biao CAO
CPC分类号： G01N30/64 , G01N27/622 , G01N2030/025 , H01J49/062
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.
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