CN220752036U - Pretreatment device and organic matter analysis system - Google Patents
Pretreatment device and organic matter analysis system Download PDFInfo
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- CN220752036U CN220752036U CN202321470322.3U CN202321470322U CN220752036U CN 220752036 U CN220752036 U CN 220752036U CN 202321470322 U CN202321470322 U CN 202321470322U CN 220752036 U CN220752036 U CN 220752036U
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- module
- pretreatment device
- solid
- phase microextraction
- sampling module
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- 239000005416 organic matter Substances 0.000 title claims abstract description 12
- 238000005070 sampling Methods 0.000 claims abstract description 40
- 238000002470 solid-phase micro-extraction Methods 0.000 claims abstract description 35
- 238000009423 ventilation Methods 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims description 13
- 239000002689 soil Substances 0.000 description 4
- 239000012855 volatile organic compound Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000007781 pre-processing Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004853 microextraction Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
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Abstract
The utility model provides a pretreatment device and an organic matter analysis system, wherein the pretreatment device comprises a headspace sampling module; the headspace sampling module and the solid-phase microextraction module are arranged in the shell; the wiring terminal and the ventilation connector are arranged at the rear side of the shell, and the wiring terminal is respectively connected with the solid-phase microextraction module and the headspace sampling module; the gas cylinder is arranged in the shell; two inlets of the four-way valve are respectively communicated with the ventilation joint and the gas cylinder, and two outlets of the four-way valve are respectively communicated with the solid-phase microextraction module and the headspace sampling module. The utility model has the advantages of small volume and the like.
Description
Technical Field
The present utility model relates to organic matter analysis, and more particularly to a pretreatment device and an organic matter analysis system.
Background
In the field application of the portable chromatograph-mass spectrometer, volatile Organic Compounds (VOCs) in water and soil are pretreated by a headspace sampling system as pretreatment, and then substances to be detected in samples are led into the portable chromatograph-mass spectrometer by using purge gas for separation analysis. Semi-volatile organic compounds (SVOCs) in water and soil are mainly pretreated by a solid-phase microextraction pretreatment device, and substances to be detected in a sample are led into a portable chromatograph-mass spectrometer by using a solid-phase microextraction probe for separation analysis.
At present, a headspace sampling pretreatment device and a solid-phase microextraction pretreatment device in the market are used as separate pretreatment devices. Therefore, when testing organic contaminants in water or soil on site, it is necessary to bring the headspace sampling pre-processor and the solid phase microextraction pre-processor together with the portable chromatograph to the site. The portability of the system is greatly reduced, and the headspace sampling pretreatment and the solid-phase microextraction pretreatment are used as independent equipment to be maintained respectively, so that the personnel cost is greatly increased.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides a pretreatment device.
The utility model aims at realizing the following technical scheme:
the pretreatment device comprises a headspace sampling module; the pretreatment device further includes:
the head space sampling module and the solid phase microextraction module are arranged in the shell;
the wiring terminal and the ventilation connector are arranged at the rear side of the shell, and the wiring terminal is respectively connected with the solid-phase microextraction module and the headspace sampling module;
a gas cylinder disposed within the housing;
and the two inlets of the four-way valve are respectively communicated with the ventilation joint and the gas cylinder, and the two outlets of the four-way valve are respectively communicated with the solid-phase microextraction module and the headspace sampling module.
The utility model also aims to provide an organic matter analysis system applying the pretreatment device, and the aim is achieved by the following technical scheme:
the organic matter analysis system comprises a pretreatment unit, a separation unit and an analysis unit which are sequentially connected; the pretreatment unit adopts the pretreatment device of the utility model, and the solid-phase microextraction module and the headspace sampling module are connected with the separation unit.
Compared with the prior art, the utility model has the following beneficial effects:
on the basis of sharing a power supply and air supply flow path, the headspace sampling module and the solid-phase microextraction module are integrated into a pretreatment device, so that the headspace sampling and solid-phase microextraction pretreatment functions can be realized simultaneously, and the rapid, accurate, qualitative and quantitative determination of VOCs and SVOCs in water and soil can be realized by matching with a portable chromatograph-mass spectrometer;
through the reasonable layout of each part, including the position setting of parts such as battery, gas cylinder, sampling module and cross valve, reduced system size and weight, further improved system portability.
Drawings
The present disclosure will become more readily understood with reference to the accompanying drawings. As will be readily appreciated by those skilled in the art: the drawings are only for illustrating the technical scheme of the present utility model and are not intended to limit the scope of the present utility model. In the figure:
FIG. 1 is a schematic diagram of a pretreatment device according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of connection of a four-way valve according to an embodiment of the present utility model.
Detailed Description
Figures 1-2 and the following description depict alternative embodiments of the utility model to teach those skilled in the art how to make and reproduce the utility model. For the purpose of explaining the technical solution of the present utility model, some conventional aspects have been simplified or omitted. Those skilled in the art will appreciate variations or alternatives derived from these embodiments that fall within the scope of the utility model. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the utility model. Thus, the utility model is not limited to the following alternative embodiments, but only by the claims and their equivalents.
Example 1
Fig. 1 schematically shows a block diagram of a pretreatment device according to an embodiment of the present utility model, as shown in fig. 1, the pretreatment device includes:
a headspace sampling module 26 and a solid phase microextraction module 27, both of which are prior art in the art;
the shell 11, the headspace sampling module 26 and the solid-phase microextraction module 27 are arranged in the shell 11, such as a cuboid shell 11;
a wiring terminal 22 and a ventilation joint 21, wherein the wiring terminal 22 and the ventilation joint 21 are arranged at the rear side of the shell 11, and the wiring terminal 22 is respectively connected with the solid-phase microextraction module 27 and the headspace sampling module 26;
a gas cylinder 25, the gas cylinder 25 being disposed within the housing 11;
the four-way valve 23, as shown in fig. 2, two inlets of the four-way valve 23 are respectively connected with the ventilation joint 21 and the gas cylinder 25, and two outlets are respectively connected with the solid-phase microextraction module 27 and the headspace sampling module 26, so that the headspace sampling module 26 and the solid-phase microextraction module 27 are selectively applicable to gas in the gas cylinder 25 or external gas.
To accommodate mobile applications, further, the pre-processing device further comprises:
a battery provided in the housing 11 and connected to a switching circuit;
and a switching circuit for selectively connecting the terminal 22 and the storage battery to the solid-phase microextraction module 27 and the headspace sampling module 26.
In order to display information in the preprocessing process in real time, the preprocessing device further comprises:
and the display screen 24 is connected with the output end of the switching circuit by the display screen 24.
In order to reduce the volume, further, the gas cylinder 25 and the battery are disposed at the front side in the housing 11, the gas cylinder 25 is disposed at the upper side of the battery, the solid-phase microextraction module 27 and the headspace sampling module 26 are disposed at the rear side in the housing 11, and the four-way valve 23 is disposed at the left side or the right side in the housing 11.
In order to facilitate maintenance, further, the pretreatment device further comprises:
a first door 15, the first door 25 being provided on the front side of the housing 22;
the second cabin door 26 is disposed on the upper side of the housing 11, and is disposed on the upper sides of the solid-phase microextraction module 27 and the headspace sampling module 26.
In order to facilitate maintenance, further, the pretreatment device further comprises:
a third door provided on the left or right side of the housing 11 and abutting the four-way valve 23.
The organic matter analysis system of the embodiment of the utility model comprises:
the separation unit and the analysis unit are connected in sequence, and are the prior art in the field;
the pretreatment unit, the pretreatment device of this embodiment, the solid-phase microextraction module 27 and the headspace sampling module 26 are connected to the separation unit.
In order to improve the separation effect and the analysis accuracy, further, the separation unit is a chromatographic column and the analysis unit is a mass spectrometer.
Example 2
Application example of the organic matter analysis system according to the embodiment of the utility model.
In this application example, in the organic matter analysis system, the separation unit employs a chromatographic column, and the analysis unit employs a mass spectrometer.
As shown in fig. 1, in the pretreatment unit, a casing 11 is a rectangular metal shell, a first cabin door 15 is arranged on the front side, a second cabin door 16 is arranged on the upper side at a rear position, and a third cabin door is arranged on the left side; the display screen 24 is arranged at the front position of the upper side, the gas cylinder 25 and the storage battery are respectively arranged in the shell 11 at the lower side of the display screen 24 from top to bottom, the gas cylinder 25 is arranged in the gas cylinder cabin 12, the storage battery is arranged in the storage battery cabin 13, the gas cylinder cabin 12 is isolated from the storage battery cabin 13, and the replacement and maintenance of the gas cylinder 25 and the storage battery are realized by the first cabin door 15; the headspace sampling module 26 and the solid-phase microextraction module 27 are arranged in the pretreatment cabin 14 in the shell 11, are positioned at the rear sides of the gas cylinder 25 and the storage battery and are positioned at the lower side of the second cabin door 16, and the outlets of the headspace sampling module 26 and the solid-phase microextraction module 27 are respectively communicated with the separation unit; the four-way valve 23 is arranged at the left side in the shell 11, and a third cabin door is arranged at the left side of the shell 11, so that the four-way valve 23 is convenient to replace and maintain;
the wiring terminal 22 and the ventilation connector 21 are arranged at the lower position of the rear side of the shell 11, the wiring terminal 22 and the storage battery are respectively connected with a switching circuit, and the output of the switching circuit is respectively connected with the solid-phase microextraction module 27, the headspace sampling module 26 and the display screen 24, so that the solid-phase microextraction module 27, the headspace sampling module 26 and the display screen 24 are selectively connected with the mains supply or the storage battery.
As shown in fig. 2, the ventilation joint 21 and the gas bottle 25 are respectively communicated with the inlet of the four-way valve 23, and the outlet is respectively connected with the solid-phase microextraction module 27 and the headspace sampling module 26, so that the headspace sampling module 26 and the microextraction sampling module 27 selectively use gas bottle gas or external gas; a one-way valve 31 is arranged between the vent joint 21 and the inlet of the four-way valve 23; a solenoid valve 32 is provided between the cylinder 25 and the inlet of the four-way valve 23.
The pretreatment device of this embodiment has a height of less than 200mm and a length-width dimension of not more than 400mm×400mm.
Claims (9)
1. The pretreatment device comprises a headspace sampling module; characterized in that the pretreatment device further comprises:
the head space sampling module and the solid phase microextraction module are arranged in the shell;
the wiring terminal and the ventilation connector are arranged at the rear side of the shell, and the wiring terminal is respectively connected with the solid-phase microextraction module and the headspace sampling module;
a gas cylinder disposed within the housing;
and the two inlets of the four-way valve are respectively communicated with the ventilation joint and the gas cylinder, and the two outlets of the four-way valve are respectively communicated with the solid-phase microextraction module and the headspace sampling module.
2. The pretreatment device according to claim 1, further comprising:
the storage battery is arranged in the shell and is connected with the switching circuit;
and the switching circuit is used for enabling the wiring terminal and the storage battery to be selectively connected with the solid-phase microextraction module and the headspace sampling module.
3. The pretreatment device according to claim 2, further comprising:
and the display screen is connected with the output end of the switching circuit.
4. The pretreatment device according to claim 2, wherein the gas cylinder and the battery are disposed at a front side in the housing, the gas cylinder is disposed at an upper side of the battery, the solid-phase microextraction module and the headspace sampling module are disposed at a rear side in the housing, and the four-way valve is disposed at a left side or a right side in the housing.
5. The pretreatment device according to claim 4, further comprising:
a first door disposed on a front side of the housing;
the second cabin door is arranged on the upper side of the shell and is positioned on the upper sides of the solid-phase microextraction module and the headspace sampling module.
6. The pretreatment device according to claim 5, further comprising:
and the third cabin door is arranged on the left side or the right side of the shell and is adjacent to the four-way valve.
7. The pretreatment device according to claim 1, further comprising:
the one-way valve is arranged between the ventilation joint and the four-way valve;
and the electromagnetic valve is arranged between the gas cylinder and the four-way valve.
8. The organic matter analysis system comprises a pretreatment unit, a separation unit and an analysis unit which are sequentially connected; the pretreatment device is characterized in that the pretreatment unit adopts the pretreatment device of any one of claims 1-7, and the solid-phase microextraction module and the headspace sampling module are connected with the separation unit.
9. The organic matter analysis system according to claim 8, wherein the separation unit is a chromatographic column and the analysis unit is a mass spectrometer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320336363 | 2023-02-28 | ||
| CN2023203363637 | 2023-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220752036U true CN220752036U (en) | 2024-04-09 |
Family
ID=90551960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321470322.3U Active CN220752036U (en) | 2023-02-28 | 2023-06-09 | Pretreatment device and organic matter analysis system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220752036U (en) |
-
2023
- 2023-06-09 CN CN202321470322.3U patent/CN220752036U/en active Active
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