CN116203174B - A collection device for GC-MS's natural volatile matter - Google Patents
A collection device for GC-MS's natural volatile matter Download PDFInfo
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- CN116203174B CN116203174B CN202310226059.1A CN202310226059A CN116203174B CN 116203174 B CN116203174 B CN 116203174B CN 202310226059 A CN202310226059 A CN 202310226059A CN 116203174 B CN116203174 B CN 116203174B
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- extrusion
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- 238000002290 gas chromatography-mass spectrometry Methods 0.000 title claims abstract description 16
- 238000001125 extrusion Methods 0.000 claims abstract description 109
- 239000000126 substance Substances 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims description 38
- 239000012528 membrane Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 3
- 239000003039 volatile agent Substances 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 47
- 238000005070 sampling Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000004108 freeze drying Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012520 frozen sample Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2294—Sampling soil gases or the like
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to the technical field of detection and collection instruments, and particularly discloses a collection device for natural volatile substances of a GC-MS (gas chromatography-mass spectrometry), which comprises an extrusion bin body, an extrusion unit, a sample bag and an operation screen, wherein the extrusion unit is arranged in the extrusion bin body, the operation screen is fixedly connected with the extrusion bin body and is positioned at one side of the extrusion bin body, and the sample bag is arranged in the extrusion bin body and is positioned at the upper end of the extrusion bin body. The arrangement of the structure can obtain the closest real volatile compound under the condition of not depending on heating and chemical sample treatment, thereby reducing the deviation of real data and achieving the best data.
Description
Technical Field
The invention relates to the technical field of detection and collection instruments, in particular to a collection device for natural volatile substances of GC-MS.
Background
At present, a headspace bottle is often adopted for collecting volatile substances, a sample is frozen and stored at first, the frozen sample is ground at a low temperature to be crushed, or a fresh sample is directly placed in the headspace bottle, the headspace bottle is heated, and the volatile substances are collected.
However, in the prior art, part of volatile substances are lost by a grinding method after freeze drying; when the fresh sample is directly placed in the headspace bottle, the sample is not crushed, and the collection of the sample is insufficient; in addition, the heating mode can cause irreversible damage to the natural volatile substances, so that the detected substances deviate from the substances in the natural sample at normal temperature.
Disclosure of Invention
The invention aims to provide a collecting device for natural volatile substances of GC-MS, which aims to solve the problem that partial volatile substances are lost by a freeze-drying and grinding method in the prior art; when the fresh sample is directly placed in the headspace bottle, the sample is not crushed, and the collection of the sample is insufficient; in addition, the heating mode can cause irreversible damage to the natural volatile substances, so that the detected substances deviate from the substances in the natural sample at normal temperature.
In order to achieve the above purpose, the collecting device for the natural volatile substances of the GC-MS comprises an extrusion bin body, an extrusion unit, a sample bag and an operation screen, wherein the extrusion unit is arranged in the extrusion bin body, the operation screen is fixedly connected with the extrusion bin body and is positioned on one side of the extrusion bin body, and the sample bag is arranged in the extrusion bin body and is positioned at the upper end of the extrusion bin body.
The extrusion bin body comprises an extrusion box and a total power supply interface, the extrusion unit is arranged in the extrusion box, and the total power supply interface is fixedly connected with the extrusion box and is positioned on one side of the extrusion box.
The extrusion unit comprises an air bag assembly and an extrusion assembly, wherein the air bag assembly is arranged in the extrusion box, and the extrusion assembly is arranged in the extrusion box.
The air bag assembly comprises two air bag plates, two air bag bodies, two air bag tubes and an air pump motor, wherein the two air bag plates are fixedly connected with the extrusion box and located in the extrusion box, the two air bag bodies are communicated with the corresponding air bag plates and located on one sides of the corresponding air bag plates respectively, the output ends of the air bag tubes are communicated with the corresponding air bag plates and located on one sides of the corresponding air bag plates respectively, and the air pump motor is arranged in the extrusion box and communicated with the output ends of the air pump motor.
The air bag assembly further comprises vacuum pipes, vacuum pumps and electromagnetic valves, the number of the electromagnetic valves is two, each electromagnetic valve is respectively communicated with the corresponding bag plate and is respectively located on one side of the bag plate, the output ends of the vacuum pipes are respectively communicated with the corresponding electromagnetic valves and are arranged in the extrusion box, the vacuum pumps are arranged in the extrusion box, and the output ends of the vacuum pumps are communicated with the vacuum pipes.
The extrusion assembly comprises extrusion plates and electric telescopic cylinders, wherein the number of the electric telescopic cylinders is two, the two electric telescopic cylinders are respectively fixedly connected with the extrusion box and are respectively located inside the extrusion box, the two electric telescopic cylinders are oppositely arranged, the number of the extrusion plates is two, and each extrusion plate is respectively fixedly connected with the corresponding electric telescopic cylinder and is respectively located at the output end of the corresponding electric telescopic cylinder.
The sample bag comprises a bag body, a fixed cover, a neck ring, a sealing cover, an exhaust pipe, a pipe cover and a gas collecting component, wherein the bag body is communicated with the neck ring and is positioned at the lower end of the neck ring, the fixed cover is fixedly connected with the neck ring and is sleeved on the outer surface wall of the neck ring, the fixed cover covers the extrusion box, the sealing cover is in threaded connection with the neck ring and is positioned at the upper end of the neck ring, the sealing cover covers the neck ring, the exhaust pipe is communicated with the sealing cover and is positioned at the upper end of the sealing cover, the pipe cover is in threaded connection with the exhaust pipe, the pipe cover covers the exhaust pipe, and the gas collecting component is communicated with the sealing cover and is positioned at the upper end of the sealing cover.
The gas collecting assembly comprises a gas collecting pipe and a sealing film, wherein the gas collecting pipe is communicated with the sealing cover and is positioned at the upper end of the sealing cover, and the sealing film covers the gas collecting pipe and is positioned at the upper end of the gas collecting pipe.
According to the collecting device for the natural volatile substances for the GC-MS, the sample to be extruded is placed in the sample bag, the sample bag is fixed in the extrusion bin body, extrusion force and time of the extrusion unit are preset through the operation screen, after preparation work is finished, the operation screen is used for driving the extrusion unit to extrude the sample bag, so that the sample in the sample bag is damaged, the sample volatilizes natural volatile gas at normal temperature, and finally the sample is sampled by using the sampling device, so that the most real volatile compound can be obtained under the condition that the sample bag does not depend on heating and chemical sample treatment, deviation of real data can be reduced, and optimal data can be achieved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural view of a collecting device for natural volatile substances for GC-MS according to the present invention.
Fig. 2 is a cross-sectional view showing the internal structure of a natural volatile substance collecting device for GC-MS according to the present invention.
FIG. 3 is a side view of a natural volatile material collection device for GC-MS according to the present invention.
Fig. 4 is a cross-sectional view of the A-A line structure of fig. 3 in accordance with the present invention.
Fig. 5 is a cross-sectional view of the B-B line structure of fig. 3 according to the present invention.
1-Extrusion box, 2-total power interface, 3-bag board, 4-bag body, 5-bag pipe, 6-air pump motor, 7-vacuum pipe, 8-vacuum pump, 9-solenoid valve, 10-extrusion board, 11-electric telescopic cylinder, 12-bag body, 13-fixed lid, 14-neck ring, 15-sealed lid, 16-blast pipe, 17-tube lid, 18-gas collecting pipe, 19-sealing membrane, 20-operation screen.
Detailed Description
Referring to fig. 1 to 5, the invention provides a collecting device for natural volatile substances for GC-MS, comprising an extrusion bin body, an extrusion unit, a sample bag and an operation screen 20, wherein the extrusion unit is arranged in the extrusion bin body, the operation screen 20 is fixedly connected with the extrusion bin body and is positioned at one side of the extrusion bin body, and the sample bag is arranged in the extrusion bin body and is positioned at the upper end of the extrusion bin body.
In this embodiment, the sample to be extruded is placed in the sample bag, the sample bag is fixed in the extrusion bin body, the extrusion force and time of the extrusion unit are preset through the operation panel 20, after the preparation work is completed, the operation panel 20 is used for driving the extrusion unit to extrude the sample bag, so that the sample in the sample bag is damaged, the sample volatilizes volatile gas which is natural at normal temperature, and finally the sample is sampled by using the sampling.
Further, the extrusion bin body comprises an extrusion box 1 and a total power interface 2, the extrusion unit is arranged in the extrusion box 1, and the total power interface 2 is fixedly connected with the extrusion box 1 and is positioned on one side of the extrusion box 1.
In the present embodiment, the squeeze box 1 supports the operation panel 20, the squeeze unit, and the sample bag, and power is supplied to components inside the squeeze box 1 by the total power interface 2.
Further, the pressing unit includes an airbag module and a pressing module, the airbag module is disposed in the inside of the pressing box 1, and the pressing module is disposed in the inside of the pressing box 1.
In this embodiment, the air bag module may be configured to press the sample bag before the pressing module, and to discharge the excess air in the sample bag, so as to prevent the gas pressure in the sample bag from becoming excessive when the volatile gas is generated.
Further, the airbag module includes a bag plate 3, a bag body 4, a bag tube 5 and an air pump motor 6, the number of the bag plates 3 is two, the two bag plates 3 are respectively fixedly connected with the extrusion box 1 and are located in the extrusion box 1, the number of the bag bodies 4 is two, the two bag bodies 4 are respectively communicated with the corresponding bag plates 3 and are respectively located at one side of the corresponding bag plates 3, the output end of the bag tube 5 is respectively communicated with the corresponding two bag plates 3 and is respectively located at one side of the corresponding bag plate 3, the air pump motor 6 is arranged in the extrusion box 1, the output end of the air pump motor 6 is communicated with the output end of the bag tube 5, and the model number adopted by the air pump motor 6 is as follows: DP370-ZA.
In this embodiment, the bag plate 3 supports the bag body 4, the air pump motor 6 is started to inflate the bag tube 5, and finally, gas enters the bag body 4 through the bag tube 5, the bag bodies 4 on two sides squeeze the sample bag, and air in the bag body is discharged.
Further, the air bag assembly further comprises two vacuum pipes 7, two vacuum pumps 8 and two electromagnetic valves 9, each electromagnetic valve 9 is respectively communicated with the corresponding air bag plate 3 and is respectively located at one side of the air bag plate 3, the output end of the vacuum pipe 7 is respectively communicated with the corresponding electromagnetic valve 9 and is arranged in the extrusion box 1, the vacuum pump 8 is arranged in the extrusion box 1, the output end of the vacuum pump 8 is communicated with the vacuum pipes 7, and the vacuum pump 8 adopts the following model: 27BPM.
In this embodiment, after the gas inside the sample bag is exhausted, the electromagnetic valve 9 and the vacuum pump 8 are opened, and the air inside the bag body 4 is pumped away by the vacuum pump 8 and the vacuum tube 7, so that the bag body 4 is free from gas and is in a flat state, and the subsequent extrusion assembly is convenient for extruding the sample bag and the sample.
Further, the extrusion subassembly includes extrusion plate 10 and electric telescopic jar 11, the quantity of electric telescopic jar 11 is two, two electric telescopic jar 11 respectively with extrusion box 1 fixed connection, and be located respectively extrusion box 1's inside, and two electric telescopic jar 11 set up relatively, the quantity of extrusion plate 10 is two, every extrusion plate 10 respectively with corresponding electric telescopic jar 11 fixed connection, and be located respectively corresponding electric telescopic jar 11's output.
In the present embodiment, after the majority of air in the sample bag is exhausted, the two electric telescopic cylinders 11 are activated to extend, and the two squeeze plates 10 are driven to squeeze the sample bag, so that the sample in the sample bag is finally squeezed to be broken.
Further, the sample bag comprises a bag body 12, a fixed cover 13, a neck ring 14, a sealing cover 15, an exhaust pipe 16, a pipe cover 17 and a gas collecting component, wherein the bag body 12 is communicated with the neck ring 14 and is positioned at the lower end of the neck ring 14, the fixed cover 13 is fixedly connected with the neck ring 14 and is sleeved on the outer surface wall of the neck ring 14, the fixed cover 13 covers the extrusion box 1, the sealing cover 15 is in threaded connection with the neck ring 14 and is positioned at the upper end of the neck ring 14, the sealing cover 15 covers the neck ring 14, the exhaust pipe 16 is communicated with the sealing cover 15 and is positioned at the upper end of the sealing cover 15, the pipe cover 17 is in threaded connection with the exhaust pipe 16, the pipe cover 17 covers the exhaust pipe 16, and the gas collecting component is communicated with the sealing cover 15 and is positioned at the upper end of the sealing cover 15.
In this embodiment, the bag body 12 is placed in the extrusion box 1 and is fixed by the fixing cover 13, the neck ring 14 is made of a hard material and has a supporting function, the neck ring 14 is sealed by the sealing cover 15, the pipe cover 17 is unscrewed when the gas is exhausted, the gas is exhausted from the exhaust pipe 16, the exhaust pipe 16 is sealed by the pipe cover 17 after the gas is exhausted, the sample is extruded, and the volatile gas is generated by extrusion and then is collected and sampled by penetrating the gas collection assembly by using the sampling needle.
Further, the gas collecting assembly comprises a gas collecting pipe 18 and a sealing membrane 19, wherein the gas collecting pipe 18 is communicated with the sealing cover 15 and is positioned at the upper end of the sealing cover 15, and the sealing membrane 19 covers the gas collecting pipe 18 and is positioned at the upper end of the gas collecting pipe 18.
In this embodiment, the gas collecting tube 18 supports the sealing membrane 19, and the sealing membrane 19 seals the gas collecting tube 18 in a covering manner, so that the sealing membrane 19 can be easily pierced by using the sampling needle and is not polluted by air, thereby enhancing the accuracy of data detection.
The above disclosure is only a preferred embodiment of the present invention, and it should be understood that the scope of the invention is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present invention.
Claims (4)
1. A collecting device for natural volatile substances of GC-MS is characterized in that,
The device comprises an extrusion bin body, an extrusion unit, a sample bag and an operation screen, wherein the extrusion unit is arranged in the extrusion bin body, the operation screen is fixedly connected with the extrusion bin body and is positioned at one side of the extrusion bin body, and the sample bag is arranged in the extrusion bin body and is positioned at the upper end of the extrusion bin body;
The extrusion bin body comprises an extrusion box and a total power interface, the extrusion unit is arranged in the extrusion box, the extrusion unit comprises an air bag assembly and an extrusion assembly, the air bag assembly is arranged in the extrusion box, and the extrusion assembly is arranged in the extrusion box;
The air bag assembly comprises two air bag plates, two air bag bodies, a bag pipe and an air pump motor, wherein the two air bag plates are fixedly connected with the extrusion box respectively and are positioned in the extrusion box, the two air bag bodies are communicated with the corresponding air bag plates respectively and are positioned at one side of the corresponding air bag plates respectively, the output end of the air bag pipe is communicated with the corresponding two air bag plates respectively and is positioned at one side of the corresponding air bag plates respectively, the air pump motor is arranged in the extrusion box, and the output end of the air pump motor is communicated with the output end of the air bag pipe;
The air bag assembly further comprises vacuum pipes, vacuum pumps and electromagnetic valves, wherein the number of the electromagnetic valves is two, each electromagnetic valve is respectively communicated with the corresponding bag plate and is respectively positioned at one side of the bag plate, the output end of each vacuum pipe is respectively communicated with the corresponding electromagnetic valve and is arranged in the extrusion box, the vacuum pumps are arranged in the extrusion box, and the output ends of the vacuum pumps are communicated with the vacuum pipes;
The extrusion assembly comprises extrusion plates and electric telescopic cylinders, the number of the electric telescopic cylinders is two, the two electric telescopic cylinders are respectively fixedly connected with the extrusion box and are respectively located inside the extrusion box, the two electric telescopic cylinders are oppositely arranged, the number of the extrusion plates is two, and each extrusion plate is respectively fixedly connected with the corresponding electric telescopic cylinder and is respectively located at the output end of the corresponding electric telescopic cylinder.
2. A collection device for natural volatile substances for GC-MS according to claim 1,
The total power interface is fixedly connected with the extrusion box and is positioned at one side of the extrusion box.
3. A collection device for natural volatile substances for GC-MS according to claim 1,
The sample bag comprises a bag body, a fixed cover, a neck ring, a sealing cover, an exhaust pipe, a pipe cover and a gas collection component, wherein the bag body is communicated with the neck ring and is positioned at the lower end of the neck ring, the fixed cover is fixedly connected with the neck ring and is sleeved on the outer surface wall of the neck ring, the fixed cover covers the extrusion box, the sealing cover is in threaded connection with the neck ring and is positioned at the upper end of the neck ring, the sealing cover covers the neck ring, the exhaust pipe is communicated with the sealing cover and is positioned at the upper end of the sealing cover, the pipe cover is in threaded connection with the exhaust pipe, the pipe cover covers the exhaust pipe, and the gas collection component is communicated with the sealing cover and is positioned at the upper end of the sealing cover.
4. A collection device for natural volatile substances for GC-MS according to claim 3,
The gas collection assembly comprises a gas collection pipe and a sealing membrane, wherein the gas collection pipe is communicated with the sealing cover and is positioned at the upper end of the sealing cover, and the sealing membrane covers the gas collection pipe and is positioned at the upper end of the gas collection pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310226059.1A CN116203174B (en) | 2023-03-10 | 2023-03-10 | A collection device for GC-MS's natural volatile matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310226059.1A CN116203174B (en) | 2023-03-10 | 2023-03-10 | A collection device for GC-MS's natural volatile matter |
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| Publication Number | Publication Date |
|---|---|
| CN116203174A CN116203174A (en) | 2023-06-02 |
| CN116203174B true CN116203174B (en) | 2024-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310226059.1A Active CN116203174B (en) | 2023-03-10 | 2023-03-10 | A collection device for GC-MS's natural volatile matter |
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Citations (9)
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|---|---|---|---|---|
| US5140845A (en) * | 1989-12-01 | 1992-08-25 | University Of Connecticut | Method for measuring volatile constituents in earth samples |
| WO1995002456A1 (en) * | 1993-07-14 | 1995-01-26 | Shimakyu Chemical Co., Ltd. | Crush-dispersion method and instrument used therefor |
| WO1995002458A1 (en) * | 1993-07-14 | 1995-01-26 | Shimakyu Chemical Co., Ltd. | Bag for crushing and dispersion |
| CN107843655A (en) * | 2016-09-20 | 2018-03-27 | 中国石油化工股份有限公司 | A kind of device and method of rock air content and C1 C15 light hydrocarbon component joint tests |
| CN108452552A (en) * | 2018-04-02 | 2018-08-28 | 中国烟草总公司郑州烟草研究院 | Solid-phase micro-extracting device and its solid phase microextraction pre-treatment component |
| CN111929393A (en) * | 2020-08-18 | 2020-11-13 | 云南中烟工业有限责任公司 | Pretreatment device for detecting chemical substances in explosive content and application |
| CN212254783U (en) * | 2020-05-25 | 2020-12-29 | 西安康瑞达环保科技有限公司 | Air sampling device for atmosphere detection device |
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2023
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| US5140845A (en) * | 1989-12-01 | 1992-08-25 | University Of Connecticut | Method for measuring volatile constituents in earth samples |
| WO1995002456A1 (en) * | 1993-07-14 | 1995-01-26 | Shimakyu Chemical Co., Ltd. | Crush-dispersion method and instrument used therefor |
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| CN212340765U (en) * | 2020-05-16 | 2021-01-12 | 江苏华研检测技术有限公司 | Sampling device for environmental air detection |
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