CN207662921U - Aromatic series escaping gas rapid detection system based on micro-fluidic chip - Google Patents
Aromatic series escaping gas rapid detection system based on micro-fluidic chip Download PDFInfo
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- CN207662921U CN207662921U CN201820052125.2U CN201820052125U CN207662921U CN 207662921 U CN207662921 U CN 207662921U CN 201820052125 U CN201820052125 U CN 201820052125U CN 207662921 U CN207662921 U CN 207662921U
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Abstract
The utility model is related to the aromatic series escaping gas rapid detection system based on micro-fluidic chip, which includes mobile phase source, gas-chromatography pump, micro-fluidic chip, information acquisition module, processor and control circuit；The micro-fluidic chip includes space gas-chromatography module and microanalysis module, the mobile phase source is pumped by gas-chromatography and is connect with the input end of space gas-chromatography module, the outlet end of space gas-chromatography module connects microanalysis module, micro-fluidic chip is electrically connected with information acquisition module, control circuit, and control circuit is electrically connected with processor with information acquisition module；Core component in the micro-fluidic chip is space gas-chromatography module, is equipped with multiple gas chromatographic columns (s1~sn) in the gas-chromatography module of space successively, and the quantity of gas chromatographic column is not less than 2.The detecting system has the characteristics that efficient, low price, portable and automation compared with existing detection technique.
Description
Technical field
The utility model belongs to benzene homologues technical field of analysis and detection, and in particular to a kind of fragrance based on micro-fluidic chip
Race's escaping gas rapid detection system.
Background technology
Benzene homologues refer to the general name of the chemical substances such as benzene, toluene, ethylbenzene, dimethyl benzene.Benzene homologues are colourless, have aroma
Taste belongs to volatile organic compounds, is often used as diluent and solvent, is widely present in gasoline, plastics, rubber, synthesis fibre
In dimension, solvent based coating and adhesive.Since benzene homologues existence range is wide so that draw in modern Interior finishing and indoor decoration
Indoors environmental monitoring is played, the concentration of benzene homologues in the room after new finishing is caused to severely exceed.Therefore, benzene homologues are to people
The harm of body and environment has been to be concerned by more and more people.Since the volatility of benzene is big, it is exposed in air and is easy to spread.People
It is made it into vivo by breathing or skin contact benzene with animal.There is the reason in part for research report shows to cause benzene poisoning to be
Since benzene generates phenol in vivo.
The content ratio benzene of toluene and dimethylbenzene in the oil is more rich, is also widely used as solvent.The outdoor of these compounds
With indoor level, it is contemplated that can be higher than benzene.Although toluene and dimethylbenzene toxicity ratio benzene are low, progress exposed to the atmosphere is photochemical
The compound that reaction generates is learned, harmful effect can be caused to health.Therefore, to the benzene of indoor and outdoors air, toluene and
The concentration analysis of dimethylbenzene is necessary.
Currently, well known aromatic gases detection method is mainly laboratory method, but Laboratory Instruments generally all compares
Huger, instrument piece-rate system traditional at present is usually using capillary chromatograph, and column length is generally within the scope of 20-50m so that
Piece-rate system portion size is excessive, and to ensure required temperature, heating device size is also very big, and final instrument size is bigger than normal, has
Power consumption is high, is difficult to realize the shortcomings of online or portable forms, in order to realize the target of portability, detection device it is further miniature
Change, is integrated imperative.In addition by also needing to sample, the processes such as inspection take long for aromatic gases detection.Cause
This, is improved and is innovated by method, and a kind of simple, fast and accurately aromatic series escaping gas detection method of exploitation is to referring to
Leading production has important industrial value and academic significance.
Utility model content
The purpose of this utility model is to provide a kind of, and the aromatic series escaping gas based on micro-fluidic chip quickly detects
System.The detecting system has the characteristics that efficient, low price, portable and automation compared with existing detection technique.
The utility model solve the technical problem the technical solution adopted is that：A kind of virtue based on micro-fluidic chip is provided
Fragrant race's escaping gas rapid detection system, it is characterised in that the system includes mobile phase source, gas-chromatography pump, micro-fluidic core
Piece, information acquisition module, processor and control circuit；The micro-fluidic chip includes space gas-chromatography module and microanalysis mould
Block, the mobile phase source are pumped by gas-chromatography and are connect with the input end of space gas-chromatography module, space gas-chromatography mould
The outlet end of block connects microanalysis module, and micro-fluidic chip is electrically connected with information acquisition module, control circuit, control circuit and letter
Breath acquisition module is electrically connected with processor；
Core component in the micro-fluidic chip is space gas-chromatography module, is set successively in the gas-chromatography module of space
There are multiple gas chromatographic columns (s1~sn), the quantity of gas chromatographic column to be not less than 2, i.e. n >=2, the outlet of multiple gas chromatographic columns
End passes sequentially through corresponding connecting conduit head and the tail with input end and is connected to, in the connecting conduit of the input end of each gas chromatographic column
Upper valve there are one being respectively provided with, valve constitutes valve group on all these；In the outlet end of each gas chromatographic column
A branch is drawn in connecting conduit, the branch road of the extraction is both provided with a lower valve；First gas chromatographic column into
Mouth end connection gas-chromatography pump, the outlet end of n-th of gas chromatographic column directly connect the entrance of microchannel layers through a lower valve,
All these lower valves constitute lower valve group；
It is disposed with microchannel layers, microchannel control layer and microanalysis layer from arrival end in the microanalysis module, on
The branch for stating each gas chromatographic column outlet end is both connected on the entrance of microchannel layers, and the outlet of microchannel layers is controlled through microchannel
Preparative layer connects microanalysis layer, and the microanalysis floor is made of multiple microanalysis rooms (a1~am), and the quantity of microanalysis room is not less than
2, i.e. m >=2 are fixed with stationary phase in each microanalysis room by polymerization filling bonding；It is adopted by information each microanalysis room
Collection module is connected with processor；The processor is electrically connected by control circuit with upper valve group and lower valve group,
Simultaneous processor is electrically connected by control circuit with microchannel control layer.
Compared with prior art, the utility model has the beneficial effects that：
The utility model provides the aromatic series escaping gas rapid detection system based on micro-fluidic chip, the system knot
Structure is reasonable, high resolution, by the way that the microanalysis room detection of space gas chromatographic column and micro-fluidic chip is organically combined,
Not only the advantages of having maintained efficient spatial exclusion chromatography high sensitivity, but it is effectively simplified and micro- using microfluidic chip analysis technology
Type detecting instrument, mobile phase source, gas-chromatography pump, micro-fluidic chip, information acquisition module and control electricity in this system
Road can be placed in the babinet of a 400mm × 400mm × 200mm, easy to carry；Therefore, the utility model can be used as one
The portable analytical technology platform of kind carries out Site Detection, to establish aromatic series escaping gas to aromatic series escaping gas
Quick, sensitive, accurate detection technique and equipment lay the foundation.
Chromatographic column microanalysis room based on space gas chromatographic column realizes the separation of variety classes gas, while also improving
The efficiency of detecting system, reduces the consumption of sample gas, how integrated to realize.By ultraviolet LED and fluorescence photosensor
The signal acquisition module of part array composition realizes the quantitative analysis of gas component, while in the case where not destroying gas, letter
Change system structure, improves the sensitivity of detecting system.
Description of the drawings
Fig. 1 is the structural schematic diagram of the aromatic series escaping gas rapid detection system based on micro-fluidic chip.
Fig. 2 is the object construction connection figure of the aromatic series escaping gas rapid detection system based on micro-fluidic chip.
Fig. 3 is the structure chart and its partial enlarged view of the space gas-chromatography module 3 of the micro-fluidic chip of the utility model.
Figure label：1, mobile phase source, 2, gas-chromatography pump, 3, space gas-chromatography module, 4, gas chromatographic column, 5, on
Valve group, 6, lower valve group, 7, micro-fluidic chip, 8, microanalysis module, 9, microchannel layers, 10, microchannel control layer, 11, micro-
Analysis layer, 12, microanalysis room, 13, information acquisition module, 14, processor, 15, control circuit.
Specific implementation mode
In order to better understand the above technical scheme, being carried out to above-mentioned technical proposal below in conjunction with attached drawing and embodiment
Detailed description：
The utility model based on micro-fluidic chip aromatic series escaping gas rapid detection system (abbreviation system, referring to
Fig. 1 and Fig. 2), including mobile phase source 1, gas-chromatography pump 2, micro-fluidic chip 7, information acquisition module 13,14 and of processor
Control circuit 15；The micro-fluidic chip 7 includes space gas-chromatography module 3 and microanalysis module 8, the mobile phase source 1
It is connect with the input end of space gas-chromatography module 3 by gas-chromatography pump 2, the outlet end connection of space gas-chromatography module 3
Microanalysis module 8, micro-fluidic chip are electrically connected with information acquisition module, control circuit, and control circuit is equal with information acquisition module
It is electrically connected with processor 14；
Core component in the micro-fluidic chip is space gas-chromatography module, in space gas-chromatography module 3 successively
Equipped with multiple gas chromatographic columns (s1~sn), as shown in figure 3, the quantity of gas chromatographic column is not less than 2, i.e. n >=2, multiple gas phases
The outlet end of chromatographic column passes sequentially through corresponding connecting conduit head and the tail with input end and is connected to, in the input end of each gas chromatographic column
Connecting conduit on be respectively provided with there are one upper valve, valve constitutes valve group 5 on all these；In each gas-chromatography
A branch is drawn in the connecting conduit of the outlet end of column, the branch road of the extraction is both provided with a lower valve；First gas
The input end connection gas-chromatography pump 2 of phase chromatographic column s1, the outlet end of n-th of gas chromatographic column sn directly connects through a lower valve
The entrance of microchannel layers 9 is connect, all these lower valves constitute lower valve group 6；
On the one hand the outlet end of first gas chromatographic column s1 connects the input end of second gas chromatographic column s2, another party
The outlet end of the first gas chromatographic column s1 in face draws the entrance that branch connects microchannel layers 9 by triple valve, in the extraction branch
Road is both provided with lower valve, and the rest may be inferred for the connection of s2~sn-1；
In the microanalysis module 8 microchannel layers 9, microchannel control layer 10 and microanalysis layer are disposed with from arrival end
11, the branch of above-mentioned each gas chromatographic column outlet end is both connected on the entrance of microchannel layers 9, the outlet warp of microchannel layers 9
Microchannel control layer 10 connects microanalysis layer 11, and the microanalysis floor 11 is made of multiple microanalysis rooms (a1~am), microanalysis
The quantity of room is not less than 2, i.e. m >=2, and being fixed with liquid by polymerization filling bonding in each microanalysis room carries on a shoulder pole than the angle for 5/100
With the substance in sample mixture specific variations can occur for shark alkane or PEG, the substance, and then can be to aromatic series volatility
Gas is detached；Each microanalysis room is connected by information acquisition module 13 with processor 14；The processor with it is upper
Valve group 5 and lower valve group 6 are electrically connected by control circuit 15, and simultaneous processor passes through control circuit 15 and microchannel
Control layer 10 is electrically connected.
It is gel that the utility model, which is further characterized by the stationary phase in the gas chromatographic column, and by first
The aperture of gel is sequentially reduced in gas chromatographic column s1 to n-th gas chromatographic column sn (n >=2), can be effectively by molecular weight
Similar ingredient is further divided, to improve separation accuracy.
It further includes babinet that the utility model, which is further characterized by the system, and mobile phase source, gas-chromatography pump, are micro-fluidic
Chip, information acquisition module and control circuit are respectively positioned on box house, easy to carry.Sample gas is pumped through mobile phase source, gas-chromatography
Into micro-fluidic chip, the phenomenon that information acquisition module is to specific reaction in micro-fluidic chip feature carry out information extraction,
Processor may finally be realized by handling the collected data of information acquisition module to aromatic series escaping gas
Quickly detection.
The size of the babinet is 400mm × 400mm × 200mm.
In practical applications, the valve in the upper valve group 5 and lower valve group 6 is the miniature electromagnetic valve of linkage
Door, the program-guide control circuit 15 in processor 14 may be implemented to the open and-shut mode of each valve in upper and lower valve group into
Row control；Can according to detection substance needs, selection by gas chromatographic column quantity, as in detection gas phase at split-phase
To simple, molecular weight is relatively uniform, then can only select 1 or 2 gas chromatographic columns, the gas chromatographic column that will be passed through at this time
In upper valve and lower valve open, the upper and lower valve of subsequent gas chromatographic column is closed, and breakneck acceleration is improved with this；If
The gas phase composition detected is relative complex, needs to be compared internal component careful division, then selects multiple gas-chromatographies
Column improves the precision of separation with this.
A diameter of 1-3 μm of microchannel.The microchannel layers 9 are conducted with microchannel control layer 10, in microchannel layers
A diameter of 1-3 μm of channel, microchannel control layer contain air pressure microcontroller valve, control the channel in microchannel layers and microanalysis
The switch in room correlation duct.The air pressure micro valve of microchannel control layer is controlled by air pressure or electronic component, microchannel control
The state of a control of layer 10 is controlled by processor 14 by control circuit 15.
Microanalysis room in the microanalysis floor 11 is by being arranged in parallel, first microanalysis room a1, second differential
Analysis room a2 ..., the conducting of branch where m-th of microanalysis room am (m >=2) controlled by microchannel control layer, microanalysis room
Number can determine by actual conditions, such as sample number and the nature difference of wherein each ingredient, and can be selected according to above-mentioned difference
Different microanalysis rooms are analyzed, as the larger control by microchannel control layer of molecular weight makes it into first differential
Analysis room a1 analyzed, the smaller control by microchannel control layer of molecular weight make it into second microanalysis room a2 into
Row analysis, the precision of analysis is improved with this.
Multiple microanalysis rooms are connected by way of serial or parallel connection, and each microanalysis room is the reaction chromatography of nanoliter volumes
Column.
The course of work of the utility model detecting system is：
Information collection mould in aromatic series escaping gas rapid detection system of the utility model based on micro-fluidic chip
The core component of block 13 is PID detectors, which uses ultraviolet LED and fluorescence photosensor array structure
At photoionization detector carry out photoionization detection, aromatic series escaping gas after multiple gas chromatographic columns enter it is multiple
The compound of different component after microanalysis room is detached gas enters the gas chamber of photoionization detector, by ultraviolet LED
Lamp is irradiated ionization, generates cation and free electron, electric signal is generated by movement, at the data in processor
Reason system, converts electrical signals to voltage signal, is exported to varying voltage signal, to analyze the dense of sample ingredient
Degree, you can corresponding chromatogram or data result are exported on the display screen of processor.
LABVIEW control programs and ImagePro data analysis programs are loaded in the processor of the utility model.This reality
Being with novel core component can be to micro-fluidic chip that aromatic series escaping gas is used for quickly detecting；Micro-fluidic chip with
Optically transparent material is base material, and the optically transparent material can be the inorganic material such as quartz, glass, or hard high score
Sub- polymer；Mold materials are silicon chip.The reaction chromatography column microanalysis room of micro-fluidic chip is that integral post or polymerization filling fill column,
Polymerization filling is silica filler or other organic polymers.The number of chromatographic column microanalysis room can determine by actual conditions, such as sample
The nature difference of product number and wherein each ingredient is prepared for the micro-fluidic core of a monocyte sample in the specific implementation of the utility model
Piece, can the single channel is the in parallel in different ways, series connection according to actual conditions.
Embodiment 1
Aromatic series escaping gas rapid detection system of the present embodiment based on micro-fluidic chip includes mobile phase source 1, gas
Phase chromatogram pump 2, micro-fluidic chip 7, information acquisition module 13, processor 14 and control circuit 15；The micro-fluidic chip 7 includes
Space gas-chromatography module 3 and microanalysis module 8, the mobile phase source 1 pass through gas-chromatography pump 2 and space gas-chromatography mould
The input end of block 3 connects, the outlet end connection microanalysis module 8 of space gas-chromatography module 3, micro-fluidic chip and information collection
Module, control circuit electrical connection, control circuit are electrically connected with processor 14 with information acquisition module；
Core component in the micro-fluidic chip is space gas-chromatography module, in space gas-chromatography module 3 successively
Equipped with multiple gas chromatographic columns (s1~s4), the quantity of gas chromatographic column is 4, i.e. n=4, the outlet end of multiple gas chromatographic columns
Corresponding connecting conduit head and the tail are passed sequentially through with input end to be connected to, in the connecting conduit of the input end of each gas chromatographic column
There are one upper valves for setting, and valve constitutes valve group 5 on all these；Company in the outlet end of each gas chromatographic column
One branch of extraction on conduit is connect, the branch road of the extraction is both provided with a lower valve；First gas chromatographic column s1 into
The outlet end that connection gas-chromatography in mouth end pumps the 2, the 4th gas chromatographic column s4 directly connects microchannel layers 9 through a lower valve
Entrance, all these lower valves constitute lower valve group 6；
The outlet end of gas chromatographic column s1 is connected by connecting conduit with the arrival end of gas chromatographic column s2, each gas phase
A upper valve is respectively equipped in the connecting conduit of chromatographic column arrival end, the connecting conduit of outlet end is connected by Miniature three-way valve
As an interconnected threeway conduit, the third end of threeway conduit is connected with microchannel layers 9, in connection microchannel layers
Lower valve there are one being all provided on conduit；In the microanalysis module 8 microchannel layers 9, microchannel are disposed with from arrival end
Control layer 10 and microanalysis layer 11, the microanalysis floor 11 are made of four microanalysis rooms, by poly- in each microanalysis room
It closes filler bonding and is fixed with liquid load than the saualane for 5/100, the information of information collection is carried out to the reaction of each microanalysis room
Acquisition module 13 is connected with processor 14；The processor and upper valve group 5 and lower valve group 6 by control circuit 15 into
Row electrical connection, simultaneous processor are electrically connected by control circuit 15 with microchannel control layer 10.
The present embodiment system further includes babinet, mobile phase source, gas-chromatography pump, micro-fluidic chip, information acquisition module with
Control circuit is respectively positioned on box house, and the size of the babinet is 400mm × 400mm × 200mm.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation be not limited to the utility model although the utility model has been disclosed with preferred embodiment as above, it is any ripe
Professional and technical personnel is known, is not being departed within the scope of technical solutions of the utility model, when in the technology using the disclosure above
Hold the equivalent embodiment made a little change or be modified to equivalent variations, as long as being without departing from this reality utility model technical solution
Content, any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention,
It still falls in the scope of protection of the utility model.
Claims (7)
1. a kind of aromatic series escaping gas rapid detection system based on micro-fluidic chip, it is characterised in that the system includes stream
Dynamic phase source, gas-chromatography pump, micro-fluidic chip, information acquisition module, processor and control circuit；The micro-fluidic chip includes
Space gas-chromatography module and microanalysis module, the mobile phase source pass through gas-chromatography pump and space gas-chromatography module
Input end connects, and the outlet end of space gas-chromatography module connects microanalysis module, micro-fluidic chip and information acquisition module, control
Circuit electrical connection processed, control circuit are electrically connected with processor with information acquisition module；
Core component in the micro-fluidic chip is space gas-chromatography module, is equipped with successively in the gas-chromatography module of space more
A gas chromatographic column（s1~sn）, the quantity of gas chromatographic column is not less than 2, i.e. n >=2, the outlet end of multiple gas chromatographic columns and into
Mouth end passes sequentially through corresponding connecting conduit head and the tail and is connected to, and is respectively provided in the connecting conduit of the input end of each gas chromatographic column
There are one upper valves, and valve constitutes valve group on all these；Connection in the outlet end of each gas chromatographic column is led
A branch is drawn on pipe, the branch road of the extraction is both provided with a lower valve；The input end of first gas chromatographic column connects
Gas-chromatography pump is connect, the outlet end of n-th of gas chromatographic column directly connects the entrance of microchannel layers through a lower valve, all
These lower valves constitute lower valve group；
It is disposed with microchannel layers, microchannel control layer and microanalysis layer from arrival end in the microanalysis module, it is above-mentioned every
The branch of a gas chromatographic column outlet end is both connected on the entrance of microchannel layers, and the outlet of microchannel layers is through microchannel control layer
Microanalysis layer is connected, the microanalysis floor is by multiple microanalysis rooms（a1~am）It constitutes, the quantity of microanalysis room is not less than 2, i.e. m
>=2, stationary phase is fixed with by polymerization filling bonding in each microanalysis room；Each microanalysis room passes through information acquisition module
It is connected with processor；The processor is electrically connected by control circuit with upper valve group and lower valve group, is located simultaneously
Reason device is electrically connected by control circuit with microchannel control layer.
2. the aromatic series escaping gas rapid detection system according to claim 1 based on micro-fluidic chip, feature
It is that the stationary phase in the gas chromatographic column is gel, and by first gas chromatographic column to n-th of gas chromatographic column
The aperture of gel is sequentially reduced.
3. the aromatic series escaping gas rapid detection system according to claim 1 based on micro-fluidic chip, feature
It is that the stationary phase is the saualane or PEG that liquid load ratio is 5/100.
4. according to any aromatic series escaping gas rapid detection systems based on micro-fluidic chip of claim 1-3,
It is characterized in that the system further includes babinet, mobile phase source, gas-chromatography pump, micro-fluidic chip, information acquisition module and control
Circuit is respectively positioned on box house.
5. the aromatic series escaping gas rapid detection system according to claim 4 based on micro-fluidic chip, feature
It is that the size of the babinet is the mm × 200 of 400mm × 400 mm.
6. the aromatic series escaping gas rapid detection system according to claim 1 based on micro-fluidic chip, feature
It is a diameter of 1-3 μm of the channel in the microchannel layers.
7. the aromatic series escaping gas rapid detection system according to claim 1 based on micro-fluidic chip, feature
It is that multiple microanalysis rooms are connected by way of serial or parallel connection, each microanalysis room is the reaction chromatography column of nanoliter volumes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820052125.2U CN207662921U (en) | 2018-01-12 | 2018-01-12 | Aromatic series escaping gas rapid detection system based on micro-fluidic chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820052125.2U CN207662921U (en) | 2018-01-12 | 2018-01-12 | Aromatic series escaping gas rapid detection system based on micro-fluidic chip |
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| CN207662921U true CN207662921U (en) | 2018-07-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169503A (en) * | 2018-01-12 | 2018-06-15 | 河北工业大学 | Aromatic series escaping gas rapid detection system based on micro-fluidic chip |
| CN109946423A (en) * | 2019-02-28 | 2019-06-28 | 南京普特保仪器有限公司 | A kind of micro-fluidic automatic sampling reactor |
-
2018
- 2018-01-12 CN CN201820052125.2U patent/CN207662921U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169503A (en) * | 2018-01-12 | 2018-06-15 | 河北工业大学 | Aromatic series escaping gas rapid detection system based on micro-fluidic chip |
| CN108169503B (en) * | 2018-01-12 | 2024-02-02 | 河北工业大学 | Quick detection system of aromatic volatile gas based on micro-fluidic chip |
| CN109946423A (en) * | 2019-02-28 | 2019-06-28 | 南京普特保仪器有限公司 | A kind of micro-fluidic automatic sampling reactor |
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