CN106124464A - A kind of fibre-optical sensing device for detection of heavy metal ion - Google Patents
A kind of fibre-optical sensing device for detection of heavy metal ion Download PDFInfo
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- CN106124464A CN106124464A CN201610414857.7A CN201610414857A CN106124464A CN 106124464 A CN106124464 A CN 106124464A CN 201610414857 A CN201610414857 A CN 201610414857A CN 106124464 A CN106124464 A CN 106124464A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N21/643—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" non-biological material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N2021/6432—Quenching
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Abstract
The invention discloses a kind of fibre-optical sensing device for detection of heavy metal ion, including: light source module, wavelength division multiplexer, the first fiber coupler, Transmission Fibers, the second fiber coupler, detection optical fiber, signal demodulating equipment, radio transmitting device, host computer.Quantum dot and optical fiber are bonded stable fluorescence optical fiber probe by arranging on detection optical fiber by it, can be used for heavy metal ion in scene, in real time monitoring water, metal nanoparticle strengthens fluorescent technique be combined with optical fiber, quantum dot, contents of many kinds of heavy metal ion can be detected；It is by arranging radio transmitting device and host computer, and the heavy metal ion that can be detected by signal apparatus for regulating is sent to host computer in real time, facilitates management personnel to check and monitors.Sensitivity and the accuracy of detection are high, it is achieved that instrument miniaturization, portability, have concurrently far-end detection, analyze in real time, Site Detection and the ability of dynamically detection.
Description
Technical field:
The invention belongs to detection of heavy metal ion equipment technical field, be specifically related to a kind of for detection of heavy metal ion
Fibre-optical sensing device.
Background technology:
The pollution that heavy metal element causes is due to features such as chronicity, cumulative bad, latency and irreversibilities, it has also become danger
One of environomental pollution source that evil is maximum.Accurately, the heavy metal contaminants in the carriers such as environment, waste water and food is measured in time dense
Degree, is the key of Heavy Metal Pollution Control.The conventional method of analysis of heavy metal ion mainly has spectrographic method, chromatography, electrochemistry
Method, bioassay method, fast detection method etc..In recent years, a huge sum of money in a series of water quality had been put into effect after national environmental protection portion letter
Belonging to the standard of HPLC-ION, these standards are all based on ripe spectrographic method, such as developer complex reaction spectrophotometric
Method, atomic absorption spectrophotometry, atomic fluorescence spectrometry, inductively coupled plasma mass spectrometry etc..
At present, ripe detection of heavy metal ion instrument involves great expense, and structure is complicated, and an instrument is typically only capable to for one
Heavy metal species pollutant detect.For the shortcoming of heavy metal ion monitoring instrument first, some development in laboratory base
In electrochemical analysis method and the instrument of Methods Biochem Anal, speed is fast, instrument is portable for the detection of these instruments, is conducive to real
Existing field quick detection, but sensitivity and accuracy are relatively low, the limitednumber of detection heavy metal ion.Therefore, exploitation simplicity,
Analytical equipment is significant for heavy metal contaminants monitoring in water fast and efficiently.And quantum dot is novel fluorescence
Nano material, the quantum dot of different materials synthesis or the quantum dot of different surfaces ligand groups have in heavy metal ion environment
Fluorescent quenching or enhancement effect.
Summary of the invention:
To this end, the technical problem to be solved be in prior art for detection of heavy metal ion device and
Method sensitivity and accuracy are relatively low, the limitednumber of detection heavy metal ion, thus propose a kind of for heavy metal ion inspection
The fibre-optical sensing device surveyed.
For reaching above-mentioned purpose, technical scheme is as follows:
A kind of fibre-optical sensing device for detection of heavy metal ion, including:
Light source module, described light source module is wideband light source.
Wavelength division multiplexer, described wavelength division multiplexer is connected with described light source module, is used for exporting quantum dot fluorescence excitation institute
Light need to be exported.
First fiber coupler, described first fiber coupler is connected with described wavelength division multiplexer.
Transmission Fibers, described Transmission Fibers is connected with described first fiber coupler, and described first fiber coupler is by institute
State wavelength division multiplexer output optical coupling to enter in described Transmission Fibers.
Second fiber coupler, described second fiber coupler is connected with described Transmission Fibers.
Detection optical fiber, described detection optical fiber is connected with described second fiber coupler, and the side of described detection optical fiber is constituted
There is the optical fiber probe of multiple different quantum dot.
Signal demodulating equipment, described signal demodulating equipment is connected with the outfan of described Transmission Fibers, is used for detecting a huge sum of money
Belong to ion.
Radio transmitting device, described radio transmitting device is connected with described signal demodulating equipment.
Host computer, described host computer is connected with described signal demodulating equipment by radio transmitting device, and described host computer is used
Testing result in monitoring heavy metal ion in real time.
Preferred as technique scheme, described detection optical fiber is D-type optical fiber.
Preferred as technique scheme, passes through with surface with the optical fiber probe of aldehyde groups through overactivation rear surface
The quantum dot that amino group is modified is by constituting described optical fiber probe after the covalent bond between group.
Preferred as technique scheme, described Transmission Fibers is single-mode fiber.
Preferred as technique scheme, described signal demodulating equipment includes at wave filter, photoelectric conversion module, signal
Reason module, described wave filter is connected with the outfan of described Transmission Fibers, the first end of described photoelectric conversion module and described filter
Ripple device connects, and the second end of described photoelectric conversion module is connected with described signal processing module.
Preferred as technique scheme, described radio transmitting device is Zigbee radio transmitting device.
Preferred as technique scheme, described host computer is also associated with display screen, and described display screen is for a huge sum of money
The testing result belonging to ion shows.
The beneficial effects of the present invention is: it is stablized by arranging to be bonded quantum dot and optical fiber on detection optical fiber
Fluorescence optical fiber probe, can be used for heavy metal ion in scene, in real time monitoring water, metal nanoparticle is strengthened fluorescent technique with
Optical fiber, quantum dot combine, and can detect contents of many kinds of heavy metal ion, and the sensitivity of detection and accuracy are high；It is wireless by arranging
Transmitting device and host computer, the heavy metal ion that can be detected by signal apparatus for regulating is sent to host computer, convenient pipe in real time
Reason personnel check and monitor.This device achieves instrument miniaturization, portability, has far-end detection, in real time analysis, scene concurrently
Detection and the ability of dynamically detection.
Accompanying drawing illustrates:
The following drawings is only intended to, in schematically illustrating the present invention and explaining, not delimit the scope of the invention.Wherein:
Fig. 1 is a kind of fibre-optical sensing device structural representation for detection of heavy metal ion of one embodiment of the invention
Figure；
Fig. 2 is the signal apparatus for regulating structural representation of one embodiment of the invention.
Symbol description in figure:
1-light source module, 2-wavelength division multiplexer, 3-the first fiber coupler, 4-Transmission Fibers, 5-the second fiber coupler,
6-detection optical fiber, 7-signal apparatus for regulating, 8-radio transmitting device, 9-host computer, 601-optical fiber probe, 701-wave filter,
702-photoelectric conversion module, 703-signal processing module.
Detailed description of the invention:
As it is shown in figure 1, the fibre-optical sensing device for detection of heavy metal ion of the present invention, including:
Light source module 1, described light source module 1 is wideband light source.
Wavelength division multiplexer 2, described wavelength division multiplexer 2 is connected with described light source module 1, is used for exporting quantum dot fluorescence excitation
Required output light.
First fiber coupler 3, described first fiber coupler 3 is connected with described wavelength division multiplexer 2.
Transmission Fibers 4, described Transmission Fibers 4 is connected with described first fiber coupler 3, described first fiber coupler 3
Described wavelength division multiplexer 2 is exported optical coupling enter in described Transmission Fibers 4.In the present embodiment, described Transmission Fibers 4 is single-mode optics
Fine.
Second fiber coupler 5, described second fiber coupler 5 is connected with described Transmission Fibers 4.
Detection optical fiber 6, described detection optical fiber 6 is connected with described second fiber coupler 5, the side of described detection optical fiber 6
Constitute the optical fiber probe 601 having multiple different quantum dots.In the present embodiment, described detection optical fiber 6 is D-type optical fiber.Through overactivation
Rear surface is passed through the covalency between group through the quantum dot that amino group is modified tie with optical fiber probe and the surface of aldehyde groups
Described optical fiber probe 601 is constituted after conjunction.When needing detection, detection optical fiber 6 arranges the optical fiber probe of corresponding heavy metal ion,
By arranging one or more content detecting heavy metal ion and concentration.The sensitive zones of detection optical fiber 6 is by optical fiber side
The fiber array being fixed with different quantum dot on surface is constituted, and different quantum dots have specificity fluorescent to certain heavy metal ion
The effect of quencher, during detection, surface carried out, with surface, the amount that amino group is modified with the optical fiber probe of aldehyde groups
Son point is combined by the covalency between group, constitutes the optical fiber probe for heavy metal ion, when the heavy metal ion in water
When acting on quantum dot surface, quantum dot light emitting effect will be caused to change, this luminescent effect change fluorescence intensity carrys out identification,
And with concentration of heavy metal ion existence function relation, the fluorescence of part quantum dot emission is coupled back in detection optical fiber 6, and passes through
Bonder is coupled in Transmission Fibers 4, exports from the outfan of Transmission Fibers 4.
Signal demodulating equipment 7, described signal demodulating equipment 7 is connected with the outfan of described Transmission Fibers 4, is used for detecting weight
Metal ion.As in figure 2 it is shown, described signal demodulating equipment 7 includes wave filter 701, photoelectric conversion module 702, signal processing mould
Block 703, described wave filter 701 is connected with the outfan of described Transmission Fibers 4, the first end of described photoelectric conversion module 702 with
Described wave filter 701 connects, and the second end of described photoelectric conversion module 702 is connected with described signal processing module 703.
Radio transmitting device 8, described radio transmitting device 8 is connected with described signal demodulating equipment 7.In the present embodiment, institute
State radio transmitting device 8 for Zigbee radio transmitting device.
Host computer 9, described host computer 9 is connected with described signal demodulating equipment 7 by radio transmitting device 8, described upper
Machine 9 is for the testing result of monitoring heavy metal ion in real time.In the present embodiment, described host computer 9 is also associated with display screen 901,
Described display screen 901 shows for the testing result of heavy metal ion.
A kind of fibre-optical sensing device for detection of heavy metal ion described in the present embodiment, including: light source module, wavelength-division
Multiplexer, the first fiber coupler, Transmission Fibers, the second fiber coupler, detection optical fiber, signal demodulating equipment, it is wirelessly transferred
Device, host computer.Quantum dot and optical fiber are bonded stable fluorescence optical fiber probe by arranging on detection optical fiber by it, can
Heavy metal ion in monitoring water on-the-spot, real-time, strengthens metal nanoparticle fluorescent technique and is combined with optical fiber, quantum dot,
Can detect contents of many kinds of heavy metal ion, the sensitivity of detection and accuracy are high；It is by arranging radio transmitting device and host computer,
The heavy metal ion that can be detected by signal apparatus for regulating is sent to host computer in real time, facilitates management personnel to check and supervises
Survey.Achieve instrument miniaturization, portability, have far-end detection, in real time analysis, Site Detection and the ability of dynamically detection concurrently.
Obviously, above-described embodiment is only for clearly demonstrating example, and not restriction to embodiment.Right
For those of ordinary skill in the field, can also make on the basis of the above description other multi-form change or
Variation.Here without also cannot all of embodiment be given exhaustive.And the obvious change thus extended out or
Change among still in the protection domain of the invention.
Claims (7)
1. the fibre-optical sensing device for detection of heavy metal ion, it is characterised in that including:
Light source module (1), described light source module (1) is wideband light source；
Wavelength division multiplexer (2), described wavelength division multiplexer (2) is connected with described light source module (1), is used for exporting quantum dot fluorescence and swashs
Send out required output light；
First fiber coupler (3), described first fiber coupler (3) is connected with described wavelength division multiplexer (2)；
Transmission Fibers (4), described Transmission Fibers (4) is connected with described first fiber coupler (3), described first fiber coupler
(3) described wavelength division multiplexer (2) output optical coupling is entered in described Transmission Fibers (4)；
Second fiber coupler (5), described second fiber coupler (5) is connected with described Transmission Fibers (4)；
Detection optical fiber (6), described detection optical fiber (6) is connected with described second fiber coupler (5), described detection optical fiber (6)
Side constitutes the optical fiber probe (601) having multiple different quantum dots；
Signal demodulating equipment (7), described signal demodulating equipment (7) is connected with the outfan of described Transmission Fibers (4), is used for detecting
Heavy metal ion；
Radio transmitting device (8), described radio transmitting device (8) is connected with described signal demodulating equipment (7)；
Host computer (9), described host computer (9) is connected with described signal demodulating equipment (7) by radio transmitting device (8), described
Host computer (9) is for the testing result of monitoring heavy metal ion in real time.
Fibre-optical sensing device for detection of heavy metal ion the most according to claim 1, it is characterised in that: described detection
Optical fiber (6) is D-type optical fiber.
Fibre-optical sensing device for detection of heavy metal ion the most according to claim 1, it is characterised in that: through overactivation
Rear surface is passed through the covalency between group through the quantum dot that amino group is modified tie with optical fiber probe and the surface of aldehyde groups
Described optical fiber probe (601) is constituted after conjunction.
Fibre-optical sensing device for detection of heavy metal ion the most according to claim 1, it is characterised in that: described transmission
Optical fiber (4) is single-mode fiber.
Fibre-optical sensing device for detection of heavy metal ion the most according to claim 1, it is characterised in that: described signal
Demodulating equipment (7) includes wave filter (701), photoelectric conversion module (702), signal processing module (703), described wave filter
(701) outfan with described Transmission Fibers (4) is connected, the first end of described photoelectric conversion module (702) and described wave filter
(701) connecting, the second end of described photoelectric conversion module (702) is connected with described signal processing module (703).
Fibre-optical sensing device for detection of heavy metal ion the most according to claim 1, it is characterised in that: described wireless
Transmitting device (8) is Zigbee radio transmitting device.
Fibre-optical sensing device for detection of heavy metal ion the most according to claim 1, it is characterised in that: described upper
Machine (9) is also associated with display screen (901), and described display screen (901) shows for the testing result of heavy metal ion.
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| CN201610414857.7A CN106124464B (en) | 2016-06-14 | 2016-06-14 | A kind of fibre-optical sensing device for detection of heavy metal ion |
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| CN201610414857.7A CN106124464B (en) | 2016-06-14 | 2016-06-14 | A kind of fibre-optical sensing device for detection of heavy metal ion |
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| CN106124464B CN106124464B (en) | 2018-12-04 |
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Cited By (1)
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| CN106596480A (en) * | 2016-12-01 | 2017-04-26 | 中国人民大学 | Mercury-ion nanometer sensor and preparing method and application thereof |
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