Abstract: A detection apparatus and a detection method are disclosed. In one aspect, the detection apparatus includes a sampling device for collecting samples to be checked. It further includes a sample pre-processing device configured to pre-process the sample from the sampling device. It further includes a sample analyzing device for separating samples from the pre-processing device and for analyzing the separated samples. The detection apparatus is miniaturized and highly precise, and is capable of quickly and accurately detecting gaseous phase or particulate substances, and it has applications for safety inspections at airports, ports, and subway stations.

Abstract: 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).

Abstract: The present disclosure provides an ion mobility spectrometer, which comprises: a power supply circuit, configured to provide a power supply voltage; a corona discharge configured to generate ions to be subjected to measurement, through corona discharge; an ion migration circuit configured to control migration of the ions; a migration zone structure configured to realize, under control of the ion migration circuit, mobility spectrum measurement of the ions which pass through the migration zone structure; a redundant charge extraction electrode arranged between the corona discharge structure and the migration zone structure, so that the ions which are generated by the corona discharge structure can pass therethrough to reach the migration zone structure; and a redundant charge extraction circuit, wherein the redundant charge extraction electrode is connected to the ground through the redundant charge extraction circuit.

Abstract: 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.

Abstract: A sample injection device for sample collection and thermal desorption includes: a sample collection structure; a piston type adsorber having an adsorption cavity communicating with the sample collection structure; a piston cylinder defining a piston chamber accommodating the adsorber and communicating with the adsorption cavity; a thermal desorption chamber communicating with the adsorption cavity and the piston chamber; and a pump configured to pump a sample diffused in an ambient gas into the adsorption cavity through the sample collection structure and the piston chamber; the adsorber is movable between a sample collecting position where the adsorption cavity is outside the thermal desorption chamber and adsorbs the sample collected by the sample collection structure and a sample desorbing position where the adsorption cavity is inside the thermal desorption chamber so that the adsorbed sample is thermally desorbed in the thermal desorption chamber.

Abstract: A sampling device and a gas curtain guide are disclosed. In one aspect, the sampling device includes a chamber body. The chamber body includes a sample inlet, located at a first end of the chamber body, configured for suction of a sample. The chamber body further includes a sample outlet, located adjacent to a second end opposite to the first end of the chamber body, configured to discharge the sample. The chamber body further includes a gas inflation inlet, in a wall of the chamber body, configured to introduce a swirl gas flow into the chamber body. The chamber body further includes a gas exhaust opening configured to discharge gas so as to, together with the gas inflation inlet, generate a tornado type gas flow in the chamber body, which moves spirally from the first end to the second end of the chamber body.

Abstract: A sample introduction device comprises a sampling unit, a gas suction pump, adsorption units, a piston cylinder and a desorption cylinder that comprises a desorption chamber, a carrier-gas inlet, a split/purge vent and an analyzer nozzle communicating with the desorption chamber. A heating film and a temperature sensor are provided on outer wall of the desorption cylinder. The piston cylinder above the desorption cylinder comprises two piston chambers, each of which is provided with the adsorption unit and in communication with the desorption chamber. The piston cylinder comprises a sample-gas inlet connected to the sampling unit and a gas-suction-pump orifice connected to the gas suction pump, each of which can communicate with both piston chambers. Each adsorption unit comprises an adsorption cylinder-like screen for holding adsorbents and a piston rod slidably mounted in the piston chamber.

Abstract: The present invention discloses a wiping-type sample sampling and feeding device, a card reading apparatus, and a gate machine apparatus. The wiping-type sample sampling and feeding device comprises a thermally desorbing portion for analyzing a substance; a wiping-type sampling portion for wiping the substance on a card or certificate and includes a first wheel, a second wheel and a wiping conveyor belt that travels between the first and second wheels along a first direction; and a card/certificate conveyor portion including a card carrying belt configured to convey a card or certificate along a second direction so that the card or certificate can contact with the wiping conveyor belt during conveyance of the card or certificate, thereby the wiping conveyor belt wipes a surface of the card or certificate, wherein the second direction is substantially perpendicular to the first direction.

Abstract: A sampling device and an inspection apparatus are disclosed. In one aspect, an example gathering and sampling device includes a cylindrical outer housing and an inner housing disposed within the cylindrical outer housing, a cyclone chamber is formed between the cylindrical outer housing and the inner housing to generate a cyclone by injecting a gas flow into the cyclone chamber. The gathering and sampling device further includes an outer chamber body, and a plurality of gas injection orifices formed in the first inner housing end opening of the inner housing and configured to inject a gas towards a substantial center of a circular region defined by an end face of the first outer housing end opening of the cylindrical outer housing.

Abstract: The present disclosure provides an ion migration tube and a method of operation the same. The ion migration tube includes an interior space and an ion gate disposed within the interior space, the interior space includes an ionization region having an absolute value of potential V1 and a migration region. An ion gate is disposed between the ionization region and the migration region and includes a first ion gate grid having an absolute value of potential V2 and a second ion gate grid having an absolute value of potential V3, the migration region comprises at least a first migration region electrode having an absolute value of potential V4 and a second migration region electrode having an absolute value of potential V5. When the ion gate is opened, a potential well is formed for ionized ions between the first ion gate grid and the first migration region electrode so as to compress an ion group entering the migration region.

Abstract: The present disclosure provides an ion mobility spectrometer, which comprises: a power supply circuit, configured to provide a power supply voltage; a corona discharge configured to generate ions to be subjected to measurement, through corona discharge; an ion migration circuit configured to control migration of the ions; a migration zone structure configured to realize, under control of the ion migration circuit, mobility spectrum measurement of the ions which pass through the migration zone structure; a redundant charge extraction electrode arranged between the corona discharge structure and the migration zone structure, so that the ions which are generated by the corona discharge structure can pass therethrough to reach the migration zone structure; and a redundant charge extraction circuit, wherein the redundant charge extraction electrode is connected to the ground through the redundant charge extraction circuit.

Abstract: It is disclosed a scrubbing and sampling device, a card reader apparatus and a gate apparatus. The scrubbing and sampling device includes: a scrubbing and sampling portion including a first wheel and a second wheel, which are respectively capable of rotating around respective rotating axes, and a scrubbing conveyor belt tensioned by the first wheel and the second wheel and driven by rotation of the first wheel and the second wheel, to move between them; and an desorbing portion configured to desorb properties of an sample that is conveyed into the desorbing portion. The scrubbing conveyor belt is configured to move through the desorbing portion such that the desorbing portion desorbs the sample on the scrubbing conveyor belt when the scrubbing conveyor belt enters the desorbing portion.

Abstract: 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.

Abstract: 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.

Abstract: The present invention discloses a gas analyzing apparatus and a sampling device. The gas analyzing apparatus includes a sampling device and an ion mobility spectrum analysis device. The sampling device includes a multi-capillary column and a temperature control system. The ion mobility spectrum analysis device is adapted for analyzing a gas leaded-in by the sampling device and includes a reaction cavity for reaction between sample molecules and reaction ions, the cavity having a sampling opening for leading-in of the gas. An outlet end of the multi-capillary column is inserted directly into the cavity of the ion mobility spectrum analysis device through the sampling opening of the ion mobility spectrum analysis device.

Abstract: The present invention discloses a sample injection device for sample collection and sample thermal desorption.

Abstract: A darkroom type security inspection apparatus and a method of performing an inspection using the darkroom type security inspection apparatus. An apparatus includes a housing constituting a closed darkroom, and assemblies disposed inside the housing. The assemblies disposed inside the housing include: a sample collecting unit configured to collect a sample, a conveyor unit, and a X-ray detection unit to detect a position of the objected to be inspected, wherein the X-ray detection unit is configured to determine the position of the objected to be inspected within the sampling assembly so that the object to be inspected together with the conveyor unit is conveyed to an expected position; and a sample processing assembly, wherein the assemblies disposed inside the housing are communicated by fittings or connectors.

Abstract: 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).

Abstract: The present invention discloses a general sample injector, comprising a sample injection port mechanism, a sample injector shell, a vaporizing chamber, a heater, a temperature control unit, a carrier gas channel, a septum purge channel, a flow splitting channel, a coolant channel, a multichannel flow control valve and a temperature control unit. The general sample injector, equivalent to a “programmed temperature vaporizer” injector combining splitting/no splitting with cold column head sample injection, gives full play to the advantages of various sample injection modes, overcomes a plurality of disadvantages, and has higher practicability and better flexibility.

Abstract: A detection apparatus and a detection method are disclosed. In one aspect, the detection apparatus includes a sampling device for collecting samples to be checked. It further includes a sample pre-processing device configured to pre-process the sample from the sampling device. It further includes a sample analyzing device for separating samples from the pre-processing device and for analyzing the separated samples. The detection apparatus is miniaturized and highly precise, and is capable of quickly and accurately detecting gaseous phase or particulate substances, and it has applications for safety inspections at airports, ports, and subway stations.