• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to the field of sample introduction, and discloses a sample introduction device. The sample introduction device comprises a sample collection unit (10), a gas suction pump (20), adsorption units (30), a piston cylinder (40) and a cylinder desorption (50). The desorption cylinder has a desorption chamber (56), and further comprises a carrier gas inlet (51), a purge slot / opening (53) and an analyzer nozzle (52), which are in communication with each other. the desorption chamber. A heating film and a temperature sensor are provided on an outer wall of the desorption cylinder. The piston cylinder has two piston chambers (41), and each piston chamber is provided with a respective adsorption unit. The piston cylinder is mounted above the desorption cylinder, and each of the two piston chambers is in communication with the desorption chamber. The piston cylinder has a sample gas inlet (42) and a gas suction pump port (43), each of which is in communication with both piston chambers. The sample gas inlet is connected to the sample collection unit, and the gas suction pump port is connected to the gas suction pump. Each adsorption unit has a cylinder-shaped adsorption grid and a piston rod, and the cylinder-shaped adsorption grid is used to retain adsorbents. Each piston rod is slidably mounted in the respective piston chamber, and each cylinder-shaped adsorption grid can be simultaneously in communication with the sample gas inlet and the suction pump port. gas.
    公开号:FR3031179A1
    申请号:FR1563464
    申请日:2015-12-30
    公开日:2016-07-01
    发明作者:Qingjun Zhang；Yuanjing Li；Zhiqiang Chen；Weiping Zhu；Huishao He；Qiufeng Ma；Yaohong Liu；Xiang Zou；Jianping Chang
    申请人:Nuctech Co Ltd；
    IPC主号:
    专利说明:

    [0001] TECHNICAL FIELD [0001] The present invention relates to the field of sample introduction, and more particularly to a sample introduction device.  BACKGROUND OF THE INVENTION [0002] An ion mobility spectrometer is a type of trace detection device that has recently gained widespread acceptance around the world because it has a very high detection sensitivity, a speed fast analysis and a reliable result.  The ion mobility spectrometer technique identifies samples based primarily on differences in the mobility coefficient of different ions in weak electric fields.  The ion mobility spectrometer can rapidly detect drugs, explosives, toxic gases, biogas and the like, and can be widely applied for military purposes (chemical warfare agent detection) or civilian (anti-terrorism, control and plays an important role in many aspects, such as ensuring national security, maintaining social stability and strengthening national defense and improving the national economy and people's livelihoods.  However, alarm failures and false alarms can easily occur when the ion mobility spectrometer is only used to detect complex compounds.  As a result, various combined techniques seeking to improve the resolution of the analyzer appear.  The ion mobility-gaseous chromatography (GC-IMS) spectrometer couples gas chromatography with excellent separation capability with the ion mobility spectrometer having a fast reaction and a high sensitivity to effectively avoid problems arising from the low ionic capacity. identification of gas chromatography and the cross-sensitivity of the ion mobility spectrometer when the ion mobility spectrometer detects mixtures.  The ion mobility-gaseous chromatography spectrometer can obtain a three-dimensional spectrogram of color spectrum retention time, drift time, and signal intensity, and can efficiently identify a sample of complex components.  The ion mobility-gaseous chromatography spectrometer has a detection limit greater than a ppb (parts per billion) and an identification time ranging from some 15 minutes to tens of minutes.  Compared with other combined techniques, the ion mobility-gas chromatography spectrometer is characterized by simple interfaces, a low maintenance cost, a high quality-price ratio, and so on.  Therefore, the ion mobility-gas chromatography spectrometer has been developing rapidly in recent years, and has advantages of small scale and portability.  The ion mobility-gas chromatography technique is one of the important trends in the field of safety control in the future.  [0003] Sample introduction devices are essential for the ion mobility-gaseous chromatography spectrometer.  Sample introduction devices and sample introduction methods have an effect on both a range of equipment use and a difficulty of response and equipment accuracy for the objects examined.  A separate ion mobility spectrometer can be matched with different sample introduction devices, which is a mature technology.  Separated gas chromatography generally employs free-space sampling methods, which may omit complex preparative processing of samples (suitable for rapid detection).  However, with free-space sampling methods, a certain amount of samples are obtained in a "destructive" manner.  Therefore, free-space sampling methods are not suitable for rapid on-site trace gas detection without unpacking.  Chinese Patent Publication CN1296564A discloses a hand-held ion mobility-gas chromatograph spectrometer detector and provides a sample collection method for surface-fixed samples and gas samples.  More specifically, the above reference uses a porous web or an absorbent-coated web to adsorb interesting samples, and transmits a portion of the web that has absorbed the samples to a desorption device for separation and detection. sample.  Although the above reference discloses a rapid detection method suitable for gas samples and samples fixed on a surface without unpacking, its adsorbent effect is unsatisfactory, and alarm failures and false alarms of the instruments can easily occur. produce.  [0004] Thus, existing ion mobility spectrometer and gas chromatography sampling techniques are not suitable for rapid on-site detection with an ion mobility-gas chromatography spectrometer without unpacking.  Therefore, there is a need for a sample introduction device without unpacking.  SUMMARY OF THE INVENTION [0005] I.  TECHNICAL PROBLEM [0006] It is an object of the present invention to provide a sample introduction device for thermal desorption, which is capable of collecting volatile or semi-volatile sample molecules or particles of molecules. solid sample continuously and rapidly, and pre-concentrates the collected samples.  [0007] II.  TECHNICAL SOLUTION [0008] To solve the above problem, the present invention provides a sample introduction device, comprising: a sample collection unit, a gas suction pump, adsorption units , a piston cylinder and a desorption cylinder, the desorption cylinder comprises a desorption chamber, and further comprises a carrier gas inlet, a purge slot / opening and an analyzer nozzle, which are in communication with the desorption chamber; a heating film and a temperature sensor are provided on an outer wall of the desorption cylinder; the piston cylinder has two piston chambers, and each piston chamber is provided with a respective adsorption unit; the piston cylinder is mounted above the desorption cylinder, and each of the two piston chambers is in communication with the desorption chamber; the piston cylinder has a sample gas inlet and a gas suction pump port, each of which is in communication with both piston chambers; the sample gas inlet is connected to the sample collection unit, and the gas suction pump port is connected to the gas suction pump; each adsorption unit comprises a cylinder-shaped adsorption grid and a piston rod, and the cylinder-shaped adsorption grid is used to retain adsorbents; each piston rod is slidably mounted in the respective piston chamber and drives the respective cylinder-shaped adsorption grid to slide along the respective piston chamber and into the desorption chamber; and each cylinder-shaped adsorption grid may be simultaneously in communication with the sample gas inlet and the gas suction pump port.  [0009] A thermal insulation layer is provided on an outer wall of the desorption cylinder.  The sample gas inlet is connected to the sample collection unit via a corrugated pipe, and the sample collection unit has a gas suction head. bell-shaped having a microporous filter.  [0011] The cylinder-shaped adsorption grid has an adsorption gate port that is in communication with the sample gas inlet.  Each piston chamber has a respective cooling gas port provided with an inlet valve; each piston rod has a respective cooling chamber which can be in communication with the respective cooling gas port; and each piston rod is provided with apertures on its side wall, which are in communication with the cooling chamber and may be in communication with the gas suction pump port.  A respective thermal insulation lining is provided at the bottom of each cylinder-shaped adsorption grid.  A plurality of sealing rings is provided between the adsorption unit and the piston chamber.  A coating is provided on an inner wall of the desorption cylinder.  [0016] A heat insulating plate is provided between the piston cylinder and the desorption cylinder.  The sample gas inlet is connected to the sample collection unit via a corrugated pipe, in which a drying agent is provided.  III.  Advantageous Effects of the Invention [0019] In the sample introduction device of the present invention, the sample collection unit can directly draw the gas sample from surfaces of a test object or atmosphere. ambient gas, and absorbents in the cylinder-shaped adsorption grid can achieve sample absorption and even sample enrichment.  In this way, it is possible to make detections without unpacking, to reduce the sample solution preparation time, and to omit devices for free space work.  It is also possible to facilitate the miniaturization and portability of the instruments, and to facilitate rapid on-site inspections at airports, customs, and the like.  In the sample introduction device of the present invention, two adsorption units may be alternately engaged in the test and may perform continuous sample collection of the objects examined.  In particular, in case there is a plurality of examined objects, while a previous examined object is analyzed, the sample introduction device can perform sample sampling and enrichment for an object. examined next.  This saves overall sample and test time, effectively improves the handling ability and test speed of the analyzer and reduces the cost.  In the sample introduction device of the present invention, by continuous suction of the gas suction pump, samples are pre-concentrated on the absorbents, and pre-concentration can reduce the requirement of a lower test limit of the test devices (such as the ion mobility spectrometer, the mass spectrometer and the differential mobility spectrometer), which reduces a difficulty of development and the cost of instruments and reduces the rate false alerts of the 15 instruments.  DESCRIPTION OF THE DRAWINGS [0020] Figure 1 is a schematic view of an embodiment according to the present invention.  List of references 20 10 Sample collection unit 11 Bell-shaped gas suction head 12 Corrugated pipe 20 Gas suction pump 30 Adsorption unit 25 31 Piston rod 311 Piston handle 32 Cylinder-shaped adsorption grid 32 321 Adsorption grid port 33 Thermal insulation panel 30 34 Cold chamber 341 Opening Seal Ring Piston cylinder 41 Piston chamber 3031179 8 42 Gas sample inlet 43 Orifice gas suction pump 44 Coolant gas port 441 Inlet valve 5 50 Desorption cylinder 51 Carrier gas inlet 52 Analyzer nozzle 53 Slot / drain port 54 Insulation layer 10 55 Coating 56 Chamber DESCRIPTION OF THE EMBODIMENTS [0022] Exemplary embodiments will be described in detail with reference to the drawings.  However, the present disclosure should not be taken to limit the invention to the specific embodiments shown, but is for explanation and comprehension purposes only.  [0023] Referring to FIG. 1, a sample introduction device according to the present invention comprises: a sample collection unit 10, a gas suction pump 20, adsorption 30, a piston cylinder 40 and a desorption cylinder 50.  The desorption cylinder 50 comprises a desorption chamber 56, an analyzer nozzle 52, a carrier gas inlet 51 and a purge slot / opening 53 which are in communication with the desorption chamber 56.  A heating film and a temperature sensor (not shown in the figure) are provided on outer walls of the desorption cylinder 50.  The analyzer nozzle is used to connect to a chromatographic column, ion mobility spectrometer, mass spectrometer, or differential mobility spectrometer, etc. .  The carrier gas inlet is used to connect to a carrier gas supply device for receiving carrier gas.  The heating film is used to heat the desorption chamber 56.  The temperature sensor is used to connect to an external temperature control circuit to read a temperature of the desorption chamber 56 in real time and to control the temperature in combination with the external temperature control circuit.  Controlling the temperature of the desorption chamber 56 with temperature programmed techniques by a controller can effectively reduce power consumption.  The purge slot / opening 53 of the desorption cylinder 50 is in communication with the desorption chamber 56.  When mixed sample gases should not be completely received by the analyzer from the nozzle 52, a portion of the mixed sample gases is evacuated through the slit / purge opening 53.  In addition, the desorption chamber may be vented when the purge slit / aperture 53 is fully opened, and the purge may remove contaminants from the desorption chamber to effectively reduce ghost peaks during secondary sample collection.  The piston cylinder 40 has two piston chambers 41, and each piston chamber 41 is provided with a respective adsorption unit 30.  The piston cylinder 40 is mounted above the desorption cylinder 50, and each of the piston chambers 41 is in communication with the desorption chamber 56.  A lower portion of the piston cylinder 40 is inserted into the desorption chamber 56, and there is an opening in the front of the piston chamber 41 and the opening is in communication with the desorption chamber 56.  The piston cylinder 40 has a sample gas inlet 42 and a gas suction pump port 43, each of which is in communication with the two piston chambers 41.  The sample gas inlet 42 is connected to the sample collection unit 10 via a corrugated pipe 12, and the gas suction pump port 43 is connected to the pump. gas suction 20.  Each adsorption unit 30 has a cylinder-shaped adsorption grid 32 and a piston rod 31 interconnected.  The cylindrical adsorption grid 32 is a cylinder having pores in its side wall, and is used to retain the adsorbent.  As a whole, the adsorption unit 30 is shown as a cylindrical piston which is movable back and forth.  The piston rod 31 can be slidably mounted in the piston chamber 41 and can drive the cylinder shaped adsorption grid 32 to slide along the piston chamber 41 and fit into the desorption chamber. 56.  The cylinder-shaped adsorption grid 32 may be simultaneously in communication with the sample gas inlet 42 and the gas suction pump port 43.  To facilitate the thrust and pull of the piston rod 31, a piston handle 311 is provided at a reading end of the piston rod.  In operation, the adsorbent is provided in the cylinder-shaped adsorption grid 32.  The adsorption unit 30 is first pulled up so that the cylinder-shaped adsorption grid 32 is in communication with the sample collection unit 10 and the suction pump. Gas 20.  The gas suction pump 20 begins the aspiration and the sample collection unit 10 then draws sample gas.  Samples in the sample gas are absorbed by the adsorbent as the sample gas flows through the cylinder-shaped adsorption grid 32.  After the sample has accumulated on the adsorbent to an enrichment value, the adsorption unit 30 is pushed into the preheated desorption chamber 56 for sample desorption.  The desorbed sample mixes uniformly with the preheated carrier gas in the desorption chamber 56, which flows into the heated desorption chamber through the carrier gas inlet 51, and then enters an analyzer such as a ion mobility spectrometer-gas chromatography, ion mobility spectrometer, gas chromatograph mass spectrometer, gas chromatographic differential mobility spectrometer or other types of analyzers through the analyzer nozzle 52 for 15 sample test.  The two adsorption units 30 of the present invention may be used alternately.  That is, when one adsorption unit is pulled up for sample collection (next sample to be examined), the other is pressed for desorption and sample testing (sample to consider previous).  In this manner, the sample introduction device can rapidly absorb the sample continuously, and has significant advantages particularly in processing a plurality of samples to be examined.  The adsorption unit 30 can concentrate the sample to improve the test accuracy of the analyzer.  In addition, the cylinder-shaped adsorption grid 32 has an adsorption grid port 321 which is in communication with the sample gas inlet 42.  Sample gas can quickly enter the cylinder-shaped adsorption grid through the adsorption gate port 321.  The use of structures such as adsorption gate port 321 can effectively increase the absorbent area per unit of time to increase the rate of sample enrichment.  Preferably, the sample gas inlet 42 and the gas suction pump port 43 are disposed along an axial direction of the piston chamber 41.  The distance between the sample gas inlet 42 and the gas suction pump port 43 is slightly smaller than the length of the cylinder-shaped adsorption grill 32 so that the orifice The adsorption gate 321 may be suitably opposed to and in communication with the sample gas inlet 42.  In addition, a heat insulation pad 33 at the bottom of the adsorption unit can be unscrewed so that absorbents in the cylinder-shaped adsorption grid 32 can be replaced.  Absorbent types may be chosen depending on the test conditions.  In addition, a thermal insulation layer 54 is provided on the outer wall of the desorption cylinder 50.  The thermal insulation layer 54 is used to prevent the heat in the desorption chamber 56 of the desorption cylinder 50 from being lost too fast in order to reduce energy consumption.  A thermal insulation plate 60 is provided between the piston cylinder 40 and the desorption cylinder 50 to effectively isolate a heat transfer between the desorption cylinder 50 and the piston cylinder 40.  The thermal insulation plate 60 is screwed onto the piston cylinder 40 and the desorption cylinder 50 in a sealed manner.  The thermal insulation plate 60 consists of a porous ceramic material.  [0027] To acquire dry sample gas, a drying agent 13 is provided in the corrugated pipe 12 to absorb moisture from the mixed gases to protect the chromatographic column and the sensor.  The drying agent 13 is fixed via a slot 14 in the corrugated pipe 12.  The sample collection unit 10 comprises a bell-shaped gas suction head 11 having a microporous filter 15.  The microporous filter is provided to prevent a large particle substance from entering and blocking the pipes.  In addition, each piston chamber 41 has a respective cooling gas port 44 provided with an inlet valve 441.  Each piston rod 31 has a respective cooling chamber 34 which can be in communication with the respective cooling gas port 44.  Further, each piston rod 31 is provided with a plurality of openings 341 in communication with the respective cooling chamber 34 on a side wall of the piston rod 31, and at least communication when the opening unit 341 can be in with the gas suction pump port.  The adsorption unit 30 must be cooled, the unit a portion of adsorption 30 is pulled up so that the cooling chamber 34 is in communication with the cooling gas port 44.  The inlet valve 441 is open, and cooling gas enters through the cooling gas port 44 by means of the gas suction pump to cool the piston rod 31 and the cooling gate. Cylinder adsorption 32.  In addition, a plurality of O-ring type sealing rings 35 are provided between the adsorption unit 30 and the piston chamber 41 to play a sealing role.  In addition, the sealing rings 35 can isolate the cooling chamber 34 from the cylinder-shaped adsorption grid 32 to prevent cooling gas 30 from entering the cylinder-shaped adsorption grid 32.  Furthermore, a coating 55 is provided on the inner wall of the desorption cylinder 50.  The desorption cylinder 50 can be made of stainless steel.  The coating 55 is hermetically inserted into the desorption roll 50, and is made of polytetrafluoroethylene (PTFE) which is chemically stable.  The coating 55 may be replaced at regular intervals.  On the one hand, it can be ensured that the sample gas does not come in contact with and react with a metallic material which would result in deformation of the sample being examined and the signal for the test.  On the other hand, a large particle substance can be prevented from falling into and blocking the chromatographic column.  [0031] Preferably, at the bottom of each cylinder-shaped adsorption grid 32, a heat-insulating liner 33 is provided to isolate heat in the desorption chamber 56 to prevent heat in the chamber. desorption 56 to transfer to the cylinder-shaped adsorption grid 32.  Preferably, the cylinder-shaped adsorption grid 32 is open at its bottom, and the thermal insulation seal 33 is screwed onto the cylinder-shaped adsorption grid 32.  Absorbents may be replaced by removing the adsorption unit 30 or by unscrewing the piston cylinder 40 and then unscrewing the thermal insulation liner at the bottom of the adsorption unit 30.  Users can choose an appropriate type of absorbent (the diameter of the absorbents being poured should be larger than the pore diameter of the cylinder-shaped adsorption grid 32) according to different test purposes in order to improve the flexibility 3031179 15 instruments.  The thermal insulation lining can be made of PTFE, with a good thermal insulation property.  The thermal insulation liner can effectively ensure that the temperatures of the cylinder-shaped adsorption grid 32 and absorbents are close to ambient temperature during sample enrichment in the sample collection unit. in order to benefit from adsorption and enrichment of the sample.  [0032] Preferably, the piston rod 31 and the cylinder-shaped adsorption grid 32 of the sample collection unit 30 are made in one piece, and consist of a material resistant to pressure. heat that is chemically stable, such as PTFE.  The piston cylinder 40 can be made of PTFE with high strength, good heat resistance and stable chemical properties.  In order to make the adsorption unit 30 stably movable along the piston chamber 41, guide rails are hermetically disposed in the piston chamber 41 to provide support and sealing of hoses for the removal of pressure. sample, enrichment, air cooling and thermal desorption.  [0033] Referring to FIG. 1, for the convenience of the description, of the two adsorption units, the adsorption unit on the left of FIG. 1 is indicated as a first unit of adsorption. adsorption, and the adsorption unit on the right of FIG. 1 is indicated as a second adsorption unit.  When a sample collection process is performed for an object to be examined, the heating film on the outer wall of the desorption cylinder is turned on first and an appropriate temperature is set.  Once the temperature is stabilized, the two adsorption units are pushed into the desorption chamber so that the absorbents can be purified.  Then, the two adsorption units are pulled up, the first adsorption unit being pulled up into the position in which the left adsorption unit is in Fig. 1, and the second adsorption unit the adsorption being pulled up into the position in which the upper part of the cylinder-shaped adsorption grate is slightly lower than the sample gas inlet on the upper part of the piston cylinder (no circuit extraction is not formed, which facilitates cooling of the adsorption units and subsequent sample absorption).  The sample gas suction pump is turned on, and the bell-shaped sample collection head of the sample collection unit is oriented towards the object to be examined at short distance.  Volatile gas from the object to be examined is collected with the gas suction pump for 3 to 5 minutes to obtain sample enrichment.  After the sample enrichment, the cylinder-shaped adsorption grid of the first adsorption unit is fully pushed into the desorption chamber for sample desorption.  At the same time, the second adsorption unit is pulled up into the position in which the sample gas inlet, the cylinder-shaped adsorption grid and the gas suction pump port form a gas circuit.  The above steps are repeated to obtain fast and continuous sample collection and enrichment separation of different objects examined.  The desorbed sample to be examined mixes homogeneously and rapidly with the carrier gas 30 which enters the carrier gas inlet, and then enters a sample outlet.  In this way, a desorption sample is obtained.  The sample outlet is connected to a test device or separation device.  The advantages of the present invention will be summarized as follows.  I.  The sample introduction device of the present invention can directly draw a gas sample from surfaces of a test object or an ambient atmosphere of gas without unpacking, thereby reducing the space and time of solution preparation. facilitates instrument miniaturization and portability, facilitates rapid on-site inspections at airports, customs, and the like.  II.  The sample introduction device of the present invention can perform continuous sample collection of the objects examined.  In particular, in a case where there is a plurality of examined objects, while a previous examined object is analyzed, the sample introduction device can perform sample collection and enrichment for an object being examined. next.  This saves overall sample and test time, effectively improves the handling capacity and test speed of the analyzer and reduces costs.  III.  The sample introduction device of the present invention can pre-concentrate samples.  By continuous suction of the gas suction pump, samples are pre-concentrated on the absorbent, and pre-concentration can reduce the combined instrument requirement for a lower spectrometer test limit. ionic mobility, which reduces a difficulty of development and the cost of instruments and reduces the rate of false alarms of the instruments.  Although the invention has been described with reference to the exemplary embodiments thereof, it is obvious that the invention is not limited to the embodiments or constructions disclosed.  It is obvious to those skilled in the art that different changes, modifications, combinations and sub-combinations may fall within the spirit and scope of the invention.  19
    权利要求:
    Claims (10)
    [0001]
    REVENDICATIONS1. Sample introduction device, characterized in that it comprises: a sample collection unit (10), a gas suction pump (20), adsorption units (30), a cylinder of piston (40) and a desorption cylinder (50), the desorption cylinder has a desorption chamber (56), and further comprises a carrier gas inlet (51), a purge slot / opening (53) and a analyzer nozzle (52), which are in communication with the desorption chamber; a heating film and a temperature sensor are provided on an outer wall of the desorption cylinder; the piston cylinder has two piston chambers (41), and each piston chamber is provided with a respective adsorption unit; the piston cylinder is mounted above the desorption cylinder, and each of the two piston chambers is in communication with the desorption chamber; the piston cylinder has a sample gas inlet (42) and a gas suction pump port (43), each of which is in communication with the two piston chambers; the sample gas inlet is connected to the sample collection unit, and the gas suction pump port is connected to the gas suction pump; each adsorption unit comprises a cylinder-shaped adsorption grid and a piston rod, and the cylinder-shaped adsorption grid is used to retain adsorbents; each piston rod is slidably mounted in the respective piston chamber and drives the respective cylinder-shaped adsorption grid to slide along the respective piston chamber and insert into the desorption chamber; and each cylinder-shaped adsorption grid 10 may be simultaneously in communication with the sample gas inlet and the gas suction pump port.
    [0002]
    2. A sample introduction device according to claim 1, characterized in that a thermal insulation layer is provided on an outer wall of the desorption cylinder.
    [0003]
    A sample introduction device according to claim 1 or 2, characterized in that the sample gas inlet is connected to the sample collection unit via a corrugated pipe, and the sample collection unit comprises a bell-shaped gas suction head having a microporous filter.
    [0004]
    4. The sample introduction device according to claim 3, characterized in that said cylinder has in communication with any one of claims 1, that the adsorption grid forms an adsorption gate orifice which with the inlet of sample gas.
    [0005]
    A sample introducing device according to any one of claims 1 to 4, characterized in that each piston chamber has a respective cooling gas port provided with an inlet valve; each piston rod has a respective cooling chamber which can be in communication with the respective cooling gas port; and each piston rod is provided with openings on its side wall, which are in communication with the cooling chamber and are capable of being in communication with the gas suction pump port. 10
    [0006]
    A sample introduction device according to any of claims 1 to 5, characterized in that a respective thermal insulation liner is provided at the bottom of each cylinder-shaped adsorption grid.
    [0007]
    7. A sample introduction device according to any one of claims 1 to 6, characterized in that a plurality of sealing rings is provided between the adsorption unit and the piston chamber.
    [0008]
    A sample introduction device according to any one of claims 1 to 7, characterized in that a coating is provided on an inner wall of the desorption cylinder.
    [0009]
    9. A sample introduction device according to any one of claims 1 to 8, characterized in that a thermal insulation plate is provided between the piston cylinder and the desorption cylinder.
    [0010]
    A sample introduction device according to any one of claims 1 to 9, characterized in that the sample gas inlet is connected to the sample collection unit via a corrugated pipe, in which a drying agent is provided.
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4128008A|1977-05-04|1978-12-05|Xonics, Inc.|Concentration valve for a gas detecting apparatus, or the like|
    US4849179A|1986-05-14|1989-07-18|Kernforschungszentrum Karlsruhe Gmbh|Apparatus for taking samples by thermal desorption|
    CN1296564A|1998-02-11|2001-05-23|劳伦斯·V·哈里|Hand-held detection system using GC/IMS|
    US20070151449A1|2005-12-29|2007-07-05|Henry Wohltjen|System, apparatus and method for concentrating chemical vapors|
    US20110277563A1|2010-05-11|2011-11-17|Battelle Energy Alliance, Llc|Devices for collecting chemical compounds|
    US5109691A|1989-12-08|1992-05-05|Research Corporation Technologies, Inc.|Explosive detection screening system|
    CH679886A5|1989-09-04|1992-04-30|Topic Ag|
    CA2012030A1|1990-03-13|1991-09-13|Ludmila L. Danylewych-May|Sample handling system for molecular analyser|
    US6134945A|1997-12-18|2000-10-24|Gerstel Gmbh|Method for applying samples to be analyzed by gas chromatography and sampling tube|
    JPH11242020A|1998-02-26|1999-09-07|Hitachi Ltd|Atmospheric analyzer|
    CA2563011C|2004-04-01|2013-08-20|The Chugoku Electric Power Co., Inc.|Method for sampling flue gas for analysis containing gas component having high susceptibility to adsorption|
    US7837937B2|2004-07-09|2010-11-23|Hamilton Sundstrand Corporation|Biological agent detector|
    JP2006058318A|2005-11-07|2006-03-02|Hitachi Ltd|Sample gas sampling apparatus and hazardous material detection apparatus|
    CN101113968A|2006-07-27|2008-01-30|中国科学院大连化学物理研究所|Method for on-line measuring drug-making chemicals with ion transfer spectrometer|
    JP5203006B2|2008-03-26|2013-06-05|矢崎総業株式会社|Sample gas collector and gas chromatograph|
    CN102109432B|2009-12-24|2012-12-12|同方威视技术股份有限公司|Pre-concentration apparatus and method for ionic migration detection device|
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    CN111366420B|2020-05-13|2020-10-30|福州经济技术开发区易通元智能科技有限公司|Have portable equipment of water quality testing and storage concurrently|
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    优先权:
    申请号 | 申请日 | 专利标题
    CN201410850105.6A|CN104569228B|2014-12-31|2014-12-31|A kind of sampling device|
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