CN108362653A - A kind of Solid Phase Extraction functional fiber fadout field sensor and its assemble method - Google Patents
A kind of Solid Phase Extraction functional fiber fadout field sensor and its assemble method Download PDFInfo
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- CN108362653A CN108362653A CN201810113754.6A CN201810113754A CN108362653A CN 108362653 A CN108362653 A CN 108362653A CN 201810113754 A CN201810113754 A CN 201810113754A CN 108362653 A CN108362653 A CN 108362653A
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Abstract
The invention discloses a kind of Solid Phase Extraction functional fiber fadout field sensor and its assemble method, which includes light source, optical fiber, capillary, photomultiplier detector and liquid carrying unit；The surrounding layer of optical fiber left end retention surface, middle part and right end portion completely remove surrounding layer and expose optical fiber core, and capillary is inserted into inside capillary and is extended to optical fiber core, and optical fiber core seals to form liquid communication pond with intercapillary gap both ends；Inlet is set on capillary left end side wall, liquid outlet is set on right end sidewalls；Adsorption column is set on woven hose or embeds sorbing material layer in flow cell inner fiber core surface, light source is located on the left of optical fiber and is connect with fiber coupling, and setting photomultiplier detects the variation of fadout field intensity below capillary.The present invention utilizes preenrichment technology, is analysed to object preconcentration on the adsorbent material, by Solid Phase Extraction, eliminates the interference of matrix, while improving selectivity and sensitivity again, realizes the detection of trace analysis object.
Description
Technical field
The invention belongs to optical sensor device fields, and in particular to a kind of Solid Phase Extraction functional fiber fadout field sensor
And its assemble method.
Background technology
Fibre optic chemical sensor is to be combined optical fiber with spectral technique, is transmitted into traveling optical signal by optical fiber,
A kind of device that layer occurs for signal is loaded onto on optical fiber connector or surface.The main body of optical fiber structure is the higher fibre core of refractive index and refraction
The lower covering of rate, the two play decisive role to the propagation of light；Total reflection is the working foundation of optical fiber, and light is in a fiber
Total reflection occurs and needs two conditions：(1) light is by optically denser medium directive optically thinner medium；(2) incidence angle is greater than or equal to total reflection
Critical angle.Fibre optical sensor has a fast response speed, and transport information capacity is big, it can be achieved that remote lossless transmission,
It is widely used in the every field such as environmental monitoring, food security, building safety monitoring, network information transfer, health care.Fadout
Field pattern fibre optical sensor is a kind of most commonly used sensor, it removes coat, chemically corrode whole coverings and
Segment core, for light in transmission process, test substance only need to detect optical output power or output spectrum i.e. by as new covering
Can, realize the highly sensitive real-time monitoring to analysans.Since it finds broad application, and it is very extensive in every field utilization,
It is required it is also higher and higher, in order to realize the detection to trace heavy metal, it is desirable that higher sensitivity and selectivity then carry
Go out on-line solid phase extraction and realize preconcentration to trace analysis object, eliminate mechanism interference, while with a small amount of eluent, carries
High sensitivity reduces Monitoring lower-cut.
The light sent out by light source is sent into modulator zone (being fixed with sensitive agents) by optical fiber, and measured matter is mutually made with reagent
With, cause the optical characteristics such as intensity, wavelength, frequency, phase, the polarization state of light to change, the signal light modulated pass through light
Fibre is sent into optical detector and some signal processing apparatus, the final information for obtaining analysans.So sensed in optical fiber evanescent field
In device, it is to be based on total reflection principle that light is propagated in a fiber, and when light is transferred to optically thinner medium from optically denser medium, incidence angle is more than and faces
It when boundary angle, is totally reflected, there is part light wave to appear fibre core-clad interface in total reflection and enter about wavelength of covering
Magnitude, and fibre core is returned to after flowing through wavelength magnitude distance along interface, the light wave along cladding surface flowing is known as evanescent field,
For optical fiber fadout field sensor in sensing unit using test substances such as solution or gas as covering, the absorption of determinand can make fadout
Field energy is decayed, and thus the variation of energy and spectrum can be transmitted by detection to obtain the relevant information of determinand.
Fibre optical sensor is widely used to Matter Composition measurement at present.For Matter Composition detection fibre optical sensor,
Mainly there are light transmission type sensor, sensing type sensor etc. according to response mechanism differentiation.Light transmission type fibre optical sensor is situated between due to light
Matter absorbs, and output intensity will change, and reacts the information of determinand, light transmission type optical fiber by detecting the variation of output intensity
Sensor is high to mechanical registeration rigorous, and distance sensing is limited, complicated, the cost of manufacture height of sensor, stability
It is relatively poor.The basic principle of sensing type sensor is sample to be tested and transmit light energy after the interaction of the light of optical fiber evanescent field
Decaying, the method for detecting attenuation size by detector measure the concentration etc. of determinand, have and design simple, sensitivity
Height, easily with other sensing technologies are combined the characteristics of.Due to the special advantage of fadout field pattern fibre optical sensor, by the country
The attention of outer research, for all kinds of analytes, it would be desirable to qualitative and quantitative analysis detection be carried out to the detection of more low concentration, then
It proposes to combine preenrichment column, sorbing material is filled in flow pipe or is embedded in optical fiber surface, is realized to trace analysis
The highly sensitive detection of real-time online of object.
Invention content
It is an object of the invention to improve the detection sensitivity of optical fiber fadout field sensor, matrix interference is eliminated, it is beneficial
In the analyte of detection lower concentration.
It is a still further object of the present invention to provide a kind of assemble method of optical fiber fadout field sensor, simple in structure, costs
It is relatively low, it realizes sensor micromation, designs modularization.
In order to realize these purposes and other advantages of the invention, the present invention provides a kind of novel Solid Phase Extraction functional forms
Optical fiber fadout field sensor and its assemble method.
Above-mentioned Solid Phase Extraction functional fiber fadout field sensor, including light source, optical fiber, capillary, photomultiplier
Detector and liquid carrying unit.
The surrounding layer of the optical fiber left end retention surface, middle part and right end portion completely remove surrounding layer and expose fiber cores
Capillary is inserted into inside capillary and is extended to body, optical fiber core, and optical fiber core seals shape with intercapillary gap both ends
At liquid communication pond；Inlet is set on capillary left end side wall, liquid outlet is set on right end sidewalls；The liquid carrying unit
Including woven hose and peristaltic pump, woven hose one end connects the inlet of capillary, and the woven hose other end is connected with by triple valve
First branch pipe and the second branch pipe, the first branch pipe are equipped with the first peristaltic pump, and first pipe end connects eluent pool, the second branch pipe
It is equipped with the second peristaltic pump, the sensitive liquid pool of second pipe end connection；Adsorption column is set on woven hose or in flow cell
Optical fiber core surface embeds sorbing material layer；Light source is located on the left of optical fiber and is connect with fiber coupling, and light is arranged below capillary
The variation of electric multiplier detectors detection fadout field intensity, photomultiplier detector are connected to data processing equipment.
Preferably, the sorbing material layer is embedded in left half section surface of optical fiber core.
Preferably, the adsorption column is the glass column of internal filling absorbent particles, and glass column both ends connect woven hose,
Adsorption column installation site is close to inlet.
Preferably, the absorbent particles are nano-magnetic absorbent particles.
A method of assembling Solid Phase Extraction functional fiber fadout field sensor includes the following steps：
S1, removal optical fiber jacket
Its surrounding layer etching away is exposed into optical fiber core with acetone soln immersion treatment optical fiber；
S2, embedding sorbing material
By sol-gal process sorbing material layer is embedded in optical fiber core surface one end；
S3, light source selection
The light source of specific wavelength is selected according to the spectrum property of determinand molecule；
S4, component assembling
S41, optical fiber core is inserted into inside capillary and is extended capillary, optical fiber core and intercapillary sky
Gap both ends seal to form liquid communication pond, and LED light source is arranged on the left of optical fiber and is connect with fiber coupling, makes light in optical fiber
Middle propagation；
S42, inlet is opened up in capillary left end side wall surface, right end sidewalls face opens up liquid outlet；Inlet connection infusion
Pipe, the woven hose other end are connected with the first branch pipe and the second branch pipe by triple valve, the first peristaltic pump are installed on the first branch pipe, the
One pipe end connects eluent pool, and the second peristaltic pump is installed on the second branch pipe, and second pipe end connection contains determinand
Sensitive liquid pool；
S43, photomultiplier detector is set below capillary, photomultiplier detector is connected to data processing and sets
It is standby to get to optical fiber fadout field sensor.
Preferably, the concrete operations of the step S2：By ethyl orthosilicate and absolute ethyl alcohol by volume 1:4 mixing,
Obtain solution A；Water, hydrochloric acid and absolute ethyl alcohol are mixed, solution B is obtained；Under stirring condition, solution B is slowly dropped to solution A
In, it places for 24 hours, forms colloidal sol；Sorbing material is added in colloidal sol, is uniformly dispersed, optical fiber core surface, natural wind are coated in
It is dry.
Preferably, the concrete operations of the step S2：10ml ethyl orthosilicates are uniformly mixed with 40ml absolute ethyl alcohols,
Obtain solution A；It measures 2.4mL water and 0.4ml hydrochloric acid adds in people to 17.0mL absolute ethyl alcohols, obtain solution B；By solution B in magnetic
It is slowly dropped in solution A under power stirring, places for 24 hours, form colloidal sol；Sorbing material is added in colloidal sol, is uniformly dispersed, is coated
On optical fiber core surface, natural air drying.
Preferably, the concrete operations of the step S3：The maximum of determinand is determined with ultraviolet-uisible spectrophotometer
Absorbing wavelength, using the LED light source with the maximum absorption wavelength.
Preferably, in the step S1, by optical fiber acetone soak time 20-30min, retain the outsourcing of optical fiber one end
Layer, etching away optical fiber middle part and surrounding layer below, expose optical fiber core, then clean optical fiber with dipping by lye 20-30min
Core surface.
The method of another kind assembling Solid Phase Extraction functional fiber fadout field sensor, includes the following steps：
S1, removal optical fiber jacket
Optical fiber is handled with acetone soak, retains the surrounding layer of optical fiber left end, the outsourcing of etching away optical fiber middle part and right end
Layer, exposes optical fiber core, then clean optical fiber surface with dipping by lye 20-30min；
S2, light source selection
The maximum absorption wavelength that determinand is determined with ultraviolet-uisible spectrophotometer, using with the maximum absorption wavelength
LED light source；
S3, component assembling
S31, optical fiber core is inserted into inside capillary, optical fiber core seals to be formed with intercapillary gap both ends
LED light source is arranged on the left of optical fiber and is connect with fiber coupling, light is made to propagate in a fiber by liquid communication pond；
S32, capillary left end side wall surface open up inlet, and right end port opens up liquid outlet；Inlet connects woven hose, defeated
Adsorption column is installed close to inlet position on liquid pipe pipeline, the woven hose other end is connected with the first branch pipe and second by triple valve
Branch pipe installs the first peristaltic pump on the first branch pipe, and first pipe end connects eluent pool, on the second branch pipe installation second wriggle
Pump, second pipe end connect the sensitive liquid pool containing determinand；
S33, photomultiplier detector is set below capillary, the optical window of photomultiplier is parallel to optical fiber,
Photomultiplier detector is connected to data processing equipment to get to optical fiber fadout field sensor.
The detection method of the optical fiber fadout field sensor of the present invention：Sensitive solution containing determinand is wriggled by second
It is pumped into pipeline, is retained on the adsorbent material by chemisorption, then again pumped elution reagent with the first peristaltic pump
Enter pipeline, be analysed to object competitive elution and get off, the absorption by chromogenic reaction to evanescent field, photomultiplier detects evanescent field
Real-time online detection is realized in the variation of intensity.
The invention has the beneficial effects that：
(1) sorbing material is filled in flow pipe or is embedded in optical fiber table by the sensor using preenrichment technology
Face is analysed to object preconcentration on the adsorbent material, by Solid Phase Extraction, eliminates the interference of matrix, while improving selection
Property and sensitivity, realize to the highly sensitive detection of the real-time online of trace analysis object.
(2) optical fiber that the sensor uses LED light highly sensitive as light source couples, optical fiber again with sensitive photomultiplier
Coupling, each function element of sensor is integrated on one section of optical fiber, " biography " is combined with " sense ".
(3) sensor can be combined by the variation of detection fadout field intensity with other sensing technologies, for example colour developing is anti-
It answers, fluorescent quenching, generate fluorescence etc., select suitable light source, color developing agent or fluorescent material, realize the detection to analyte；
And basic optical element is used, simple in structure, cost is relatively low, realizes sensor micromation, designs modularization.
Description of the drawings
The structural schematic diagram of Fig. 1, Solid Phase Extraction functional fiber fadout field sensor.
The structural schematic diagram of Solid Phase Extraction functional fiber fadout field sensor in Fig. 2, another embodiment.
Figure label：
Light source 1, optical fiber 2, capillary 3, photomultiplier detector 4, surrounding layer 21, optical fiber core 22, sorbing material layer
23, inlet 31, liquid outlet 32, woven hose 5, triple valve 6, the first peristaltic pump 7, eluent pool 8, the second peristaltic pump 9, sensitive fluid
Pond 10, evanescent wave 11, data processing equipment 12, adsorption column 13.
Specific implementation mode
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
As shown in Figure 1, the present invention provides a kind of Solid Phase Extraction functional fiber fadout field sensor, including light source 1, light
Fibre 2, capillary 3, photomultiplier detector 4 and liquid carrying unit.The light source is the LED light with specific wavelength, work(
Consumption is 15mA × 3.05V.The internal diameter of the optical fiber is 0.6mm, capillary inner diameter 0.8mm.
The surrounding layer 21 of the optical fiber left end retention surface, middle part and right end portion completely remove surrounding layer and expose optical fiber
Core 22, optical fiber core are inserted into inside capillary and extend capillary, and optical fiber core and intercapillary gap both ends are close
Envelope forms the liquid communication pond of L grades of volumes of μ, and flow cell inner fiber core surface embeds sorbing material layer 23.Absorbing material granules
It is embedded in left half section surface of optical fiber core, which is nano-magnetic absorbent particles.It is arranged on capillary left end side wall
Liquid outlet 32 is arranged on right end sidewalls for inlet 31；The liquid carrying unit includes woven hose 5 and peristaltic pump, woven hose one
The inlet of end connection capillary, the woven hose other end are connected with the first branch pipe and the second branch pipe, the first branch pipe by triple valve 6
It is equipped with the first peristaltic pump 7, first pipe end connects eluent pool 8, and the second branch pipe is equipped with the second peristaltic pump 9, second
Pipe end connection sensitivity liquid pool 10；Light source is located on the left of optical fiber and is connect with fiber coupling, and photomultiplier transit is arranged below capillary
Pipe detector detects the variation of 11 intensity of evanescent field evanescent wave, and photomultiplier detector is connected to data processing equipment 12, should
Data processing equipment is computer.
In another embodiment, as shown in Figure 1, the surrounding layer 21 of the optical fiber left end retention surface, middle part and right end portion
It completely removes surrounding layer and exposes 22 body of fiber cores, optical fiber core is inserted into 3 inside of capillary and extends capillary, optical fiber core
It seals to form liquid communication pond with intercapillary gap both ends；Inlet 31, right end side are set on capillary left end side wall
Liquid outlet 32 is set on wall；The liquid carrying unit includes woven hose 5 and peristaltic pump, woven hose one end connect capillary into
Liquid mouth, the woven hose other end are connected with the first branch pipe and the second branch pipe by triple valve 6, and the first branch pipe is equipped with the first peristaltic pump
7, first pipe end connects eluent pool 8, and the second branch pipe is equipped with the second peristaltic pump 9, and second pipe end connects sensitive fluid
Pond 10；Adsorption column 13 is set on woven hose, and the adsorption column is the glass column of internal filling absorbent particles, glass column both ends
Woven hose is connected, for adsorption column installation site close to inlet, the absorbent particles are nano-magnetic absorbent particles.Light source position
It is connect on the left of optical fiber and with fiber coupling, setting photomultiplier detector detects the change of 11 intensity of evanescent field below capillary
Change, photomultiplier detector is connected to data processing equipment 12, which is computer.
Coupling light source and optical fiber, when the circulation annular space that the light of specific wavelength is formed by optical fiber surface to optical fiber and capillary
When, can excitation fiber surface evanescent field, when the sensitive solution containing determinand is pumped by peristaltic pump in circulation duct, into
Enter flow cell, embeds the preenrichment material of absorption in optical fiber surface, sensitive solution is retained by optical fiber surface sorbing material, so
It is pumped into elution reagent meeting competitive Adsorption appropriate afterwards and elutes the test agent advanced on the adsorbent material, chromogenic reaction occurs
To absorb evanescent field, lead to the decaying of fadout field intensity；If the material absorption of embedding while chromogenic reaction occurring and generates pair
The absorption of evanescent field, the variation of one photomultiplier tube detectors fadout field intensity of coupling below flow cell, and by the letter of capture
It number is transferred on the N3000 work stations on computer, measures the concentration of determinand.
Assemble method one：
A kind of assemble method of Solid Phase Extraction functional fiber fadout field sensor is as follows：
The preparation of basic optical element and pipeline：Compact LED lamp (15mA × 3.05V, China Shenzhen), the hair of specific wavelength
Tubule, optical fiber (600 μm of internal diameter), photomultiplier detector PMT (H10722-01), peristaltic pump (HL-2B), capillary (internal diameter
0.8mm).Include the following steps：
S1, removal optical fiber jacket：Optical fiber is handled with acetone soak, soaking time 20-30min retains optical fiber left end
The surrounding layer of surrounding layer, etching away middle part and right end, exposes optical fiber core, then clean optical fiber with dipping by lye 20-30min
Surface.
S2, embedding sorbing material：By sol-gal process sorbing material layer is embedded in optical fiber core surface one end.Specific behaviour
As：By ethyl orthosilicate and absolute ethyl alcohol by volume 1:4 mixing, obtain solution A；Water, hydrochloric acid and absolute ethyl alcohol are mixed,
Obtain solution B；Under stirring condition, solution B is slowly dropped in solution A, places for 24 hours, forms colloidal sol；Sorbing material is added
It in colloidal sol, is uniformly dispersed, is coated in optical fiber core surface, natural air drying.Further preferred operating method is：By the positive silicon of 10ml
Acetoacetic ester is uniformly mixed with 40ml absolute ethyl alcohols, obtains solution A；It measures 2.4mL water and 0.4ml hydrochloric acid adds people anhydrous to 17.0mL
In ethyl alcohol, solution B is obtained；Solution B is slowly dropped in solution A under magnetic stirring, places for 24 hours, forms colloidal sol；It will absorption
Material is added in colloidal sol, is uniformly dispersed, and is coated in optical fiber core surface, natural air drying.
S3, light source selection：The light source of specific wavelength is selected according to the spectrum property of determinand molecule.It is divided with UV, visible light
Photometric determination goes out the maximum absorption wavelength of determinand, using the LED light source with the maximum absorption wavelength.
S4, component assembling, specifically comprise the following steps：S41, optical fiber core is inserted into inside capillary, optical fiber core
Liquid communication pond is formed with intercapillary gap, LED light source is arranged on the left of optical fiber and is connect with fiber coupling, light is made
Line is propagated in a fiber；S42, inlet is opened up in capillary left end side wall surface, right end sidewalls face opens up liquid outlet；Inlet connects
Woven hose is connect, the woven hose other end is connected with the first branch pipe and the second branch pipe by triple valve, and installation first is compacted on the first branch pipe
Dynamic pump, first pipe end connect eluent pool, and the second peristaltic pump is installed on the second branch pipe, and second pipe end connection, which contains, to be needed
Survey the sensitive liquid pool of object；S43, photomultiplier detector is set below capillary, photomultiplier detector is connected to number
According to processing equipment to get to optical fiber fadout field sensor.
Assemble method two：
A kind of assemble method of Solid Phase Extraction functional fiber fadout field sensor is as follows：
The preparation of basic optical element and pipeline：Compact LED lamp (15mA × 3.05V, China Shenzhen), the hair of specific wavelength
Tubule, optical fiber (600 μm of internal diameter), photomultiplier detector PMT (H10722-01), peristaltic pump (HL-2B), capillary (internal diameter
0.8mm), adsorption column (glass columns of inside filling absorbent particles).Include the following steps：
S1, removal optical fiber jacket：Optical fiber is handled with acetone soak, soaking time 20-30min retains optical fiber left end
The surrounding layer of surrounding layer, etching away middle part and right end, exposes optical fiber core, then clean optical fiber with dipping by lye 20-30min
Surface；
S2, light source selection：The maximum absorption wavelength that determinand is determined with ultraviolet-uisible spectrophotometer, using with this
The LED light source of maximum absorption wavelength；
S3, component assembling：
S31, optical fiber core is inserted into inside capillary, optical fiber core seals to be formed with intercapillary gap both ends
LED light source is arranged on the left of optical fiber and is connect with fiber coupling, light is made to propagate in a fiber by liquid communication pond；
S32, capillary left end side wall surface open up inlet, and right end port opens up liquid outlet；Inlet connects woven hose, defeated
Adsorption column is installed close to inlet position on liquid pipe pipeline, the woven hose other end is connected with the first branch pipe and second by triple valve
Branch pipe installs the first peristaltic pump on the first branch pipe, and first pipe end connects eluent pool, on the second branch pipe installation second wriggle
Pump, second pipe end connect the sensitive liquid pool containing determinand；The liquid that first peristaltic pump and the second peristaltic pump are pumped into first flows
Through adsorption column, flow cell is entered back into.
S33, photomultiplier detector is set below capillary, the optical window of photomultiplier is parallel to optical fiber,
Photomultiplier detector is connected to data processing equipment to get to optical fiber fadout field sensor.
The detection method of the optical fiber fadout field sensor of the present invention：Sensitive solution containing determinand is wriggled by second
It is pumped into pipeline, is retained on the adsorbent material by chemisorption, then again pumped elution reagent with the first peristaltic pump
Enter pipeline, be analysed to object competitive elution and get off, the absorption by chromogenic reaction to evanescent field, photomultiplier detects evanescent field
Real-time online detection is realized in the variation of intensity.
In conclusion the present invention is based on homemade optical fiber fadout field sensor, using preenrichment technology by adsorption material
Material is filled in flow pipe or is embedded in optical fiber surface, is analysed to object preconcentration on the adsorbent material, passes through solid phase
Extraction, eliminates the interference of matrix, while improving selectivity and sensitivity, realizes highly sensitive to the real-time online of trace analysis object
Detection.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, according to the technical essence of the invention
To any simple modification, equivalent change and modification made by above example, in the range of still falling within technical solution of the present invention.
Claims (10)
1. a kind of Solid Phase Extraction functional fiber fadout field sensor, which is characterized in that including light source, optical fiber, capillary, photoelectricity
Multiplier detectors and liquid carrying unit；
The surrounding layer of the optical fiber left end retention surface, middle part and right end portion completely remove surrounding layer and expose optical fiber core,
Capillary is inserted into inside capillary and is extended to optical fiber core, and optical fiber core seals to form liquid with intercapillary gap both ends
Body flow cell；Inlet is set on capillary left end side wall, liquid outlet is set on right end sidewalls；The liquid carrying unit includes
Woven hose and peristaltic pump, woven hose one end connect the inlet of capillary, and the woven hose other end is connected with first by triple valve
Branch pipe and the second branch pipe, the first branch pipe are equipped with the first peristaltic pump, and first pipe end connects eluent pool, set on the second branch pipe
There are the second peristaltic pump, the sensitive liquid pool of second pipe end connection；Adsorption column is set on woven hose or in flow cell inner fiber
Core surface embeds sorbing material layer；Light source is located on the left of optical fiber and is connect with fiber coupling, setting photoelectricity times below capillary
Increase the variation of pipe detector detection fadout field intensity, photomultiplier detector is connected to data processing equipment.
2. Solid Phase Extraction functional fiber fadout field sensor as described in claim 1, which is characterized in that the sorbing material
Layer is embedded in left half section surface of optical fiber core.
3. Solid Phase Extraction functional fiber fadout field sensor as described in claim 1, which is characterized in that the adsorption column is
The glass column of inside filling absorbent particles, glass column both ends connect woven hose, and adsorption column installation site is close to inlet.
4. Solid Phase Extraction functional fiber fadout field sensor as claimed in claim 3, which is characterized in that the adsorbent
Grain is nano-magnetic absorbent particles.
5. a kind of assemble method of Solid Phase Extraction functional fiber fadout field sensor as claimed in claim 2, feature exist
In including the following steps：
S1, removal optical fiber jacket
Its surrounding layer etching away is exposed into optical fiber core with acetone soln immersion treatment optical fiber；
S2, embedding sorbing material
By sol-gal process sorbing material layer is embedded in optical fiber core surface one end；
S3, light source selection
The light source of specific wavelength is selected according to the spectrum property of determinand molecule；
S4, component assembling
S41, optical fiber core is inserted into inside capillary and is extended capillary, optical fiber core and intercapillary gap two
End sealing forms liquid communication pond, and LED light source is arranged on the left of optical fiber and is connect with fiber coupling, light is made to pass in a fiber
It broadcasts；
S42, inlet is opened up in capillary left end side wall surface, right end sidewalls face opens up liquid outlet；Inlet connects woven hose, defeated
The liquid pipe other end is connected with the first branch pipe and the second branch pipe by triple valve, installs the first peristaltic pump on the first branch pipe, first
Pipe end connects eluent pool, and the second peristaltic pump is installed on the second branch pipe, and second pipe end connects the sensitivity containing determinand
Liquid pool；
S43, photomultiplier detector is set below capillary, photomultiplier detector is connected to data processing equipment,
Obtain optical fiber fadout field sensor.
6. the assemble method of Solid Phase Extraction functional fiber fadout field sensor as claimed in claim 5, which is characterized in that institute
State the concrete operations of step S2：By ethyl orthosilicate and absolute ethyl alcohol by volume 1:4 mixing, obtain solution A；By water, hydrochloric acid
It is mixed with absolute ethyl alcohol, obtains solution B；Under stirring condition, solution B is slowly dropped in solution A, places for 24 hours, is formed molten
Glue；Sorbing material is added in colloidal sol, is uniformly dispersed, optical fiber core surface, natural air drying are coated in.
7. the assemble method of Solid Phase Extraction functional fiber fadout field sensor as claimed in claim 6, which is characterized in that institute
State the concrete operations of step S2：10ml ethyl orthosilicates are uniformly mixed with 40ml absolute ethyl alcohols, obtain solution A；Measure 2.4mL
Water and 0.4ml hydrochloric acid add in people to 17.0mL absolute ethyl alcohols, obtain solution B；Solution B is slowly dropped under magnetic stirring molten
In liquid A, places for 24 hours, form colloidal sol；Sorbing material is added in colloidal sol, is uniformly dispersed, optical fiber core surface is coated in, it is natural
It air-dries.
8. the assemble method of Solid Phase Extraction functional fiber fadout field sensor as claimed in claim 5, which is characterized in that institute
State the concrete operations of step S3：The maximum absorption wavelength that determinand is determined with ultraviolet-uisible spectrophotometer, using with this
The LED light source of maximum absorption wavelength.
9. the assemble method of Solid Phase Extraction functional fiber fadout field sensor as claimed in claim 5, which is characterized in that institute
It states in step S1, by optical fiber acetone soak time 20-30min, retains the surrounding layer of optical fiber left end, etching away optical fiber middle part
And the surrounding layer of right end, optical fiber core is exposed, then optical fiber core surface is cleaned with dipping by lye 20-30min.
10. a kind of assemble method of Solid Phase Extraction functional fiber fadout field sensor as claimed in claim 3, feature exist
In including the following steps：
S1, removal optical fiber jacket
Optical fiber is handled with acetone soak, retains the surrounding layer of optical fiber one end, etching away optical fiber middle part and surrounding layer below, it is naked
Expose optical fiber core, then optical fiber surface is cleaned with dipping by lye 20-30min；
S2, light source selection
The maximum absorption wavelength that determinand is determined with ultraviolet-uisible spectrophotometer, using with the maximum absorption wavelength
LED light source；
S3, component assembling
S31, optical fiber core is inserted into inside capillary, optical fiber core seals to form liquid with intercapillary gap both ends
LED light source is arranged on the left of optical fiber and is connect with fiber coupling, light is made to propagate in a fiber by flow cell；
S32, capillary left end side wall surface open up inlet, and right end port opens up liquid outlet；Inlet connects woven hose, woven hose
Adsorption column is installed close to inlet position on pipeline, the woven hose other end is connected with the first branch pipe and second by triple valve
It manages, the first peristaltic pump is installed on the first branch pipe, first pipe end connects eluent pool, and installing second on the second branch pipe wriggles
Pump, second pipe end connect the sensitive liquid pool containing determinand；
S33, photomultiplier detector is set below capillary, the optical window of photomultiplier is parallel to optical fiber, photoelectricity
Multiplier detectors are connected to data processing equipment to get to optical fiber fadout field sensor.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142764A (en) * | 2018-08-31 | 2019-01-04 | 武汉理工大学 | Chlorine residue sensing chip and chlorine residue detection method |
| CN111982872A (en) * | 2020-08-10 | 2020-11-24 | 西南石油大学 | Interface research sensor and method for action of crude oil four components and surfactant |
| WO2022016681A1 (en) * | 2020-07-20 | 2022-01-27 | 中山大学 | Laser desorption ionization method based on optical fiber conduction |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740779A (en) * | 2005-09-22 | 2006-03-01 | 复旦大学 | Analyzing system and analysing method based on integrated micro-flow control chip |
| CN101782587A (en) * | 2010-03-10 | 2010-07-21 | 新疆医科大学 | Instrument system suitable for synchronous on-line detection of adsorption spectrum and fluorescence spectrum |
| CN103278782A (en) * | 2013-05-17 | 2013-09-04 | 天津理工大学 | Magnetic field sensor based on magnetic fluid and micro-nanofiber evanescent field |
| CN104977282A (en) * | 2015-07-02 | 2015-10-14 | 山东省科学院海洋仪器仪表研究所 | Device and method used for measuring selenium in water bodies via molecular imprinting selective laser induced fluorescence |
| CN105675594A (en) * | 2014-11-18 | 2016-06-15 | 国家电网公司 | Working fluid for detection of chlorine ions in water vapor in power plant and detection method and use |
| CN107271401A (en) * | 2017-07-28 | 2017-10-20 | 中国工程物理研究院激光聚变研究中心 | The molecular state organic pollutant monitoring sensor of small core single mode single-mode fiber structure is drawn based on single mode |
-
2018
- 2018-02-05 CN CN201810113754.6A patent/CN108362653B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740779A (en) * | 2005-09-22 | 2006-03-01 | 复旦大学 | Analyzing system and analysing method based on integrated micro-flow control chip |
| CN101782587A (en) * | 2010-03-10 | 2010-07-21 | 新疆医科大学 | Instrument system suitable for synchronous on-line detection of adsorption spectrum and fluorescence spectrum |
| CN103278782A (en) * | 2013-05-17 | 2013-09-04 | 天津理工大学 | Magnetic field sensor based on magnetic fluid and micro-nanofiber evanescent field |
| CN105675594A (en) * | 2014-11-18 | 2016-06-15 | 国家电网公司 | Working fluid for detection of chlorine ions in water vapor in power plant and detection method and use |
| CN104977282A (en) * | 2015-07-02 | 2015-10-14 | 山东省科学院海洋仪器仪表研究所 | Device and method used for measuring selenium in water bodies via molecular imprinting selective laser induced fluorescence |
| CN107271401A (en) * | 2017-07-28 | 2017-10-20 | 中国工程物理研究院激光聚变研究中心 | The molecular state organic pollutant monitoring sensor of small core single mode single-mode fiber structure is drawn based on single mode |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142764A (en) * | 2018-08-31 | 2019-01-04 | 武汉理工大学 | Chlorine residue sensing chip and chlorine residue detection method |
| WO2022016681A1 (en) * | 2020-07-20 | 2022-01-27 | 中山大学 | Laser desorption ionization method based on optical fiber conduction |
| CN111982872A (en) * | 2020-08-10 | 2020-11-24 | 西南石油大学 | Interface research sensor and method for action of crude oil four components and surfactant |
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