CN106124464B - 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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- CN106124464B CN106124464B CN201610414857.7A CN201610414857A CN106124464B CN 106124464 B CN106124464 B CN 106124464B CN 201610414857 A CN201610414857 A CN 201610414857A CN 106124464 B CN106124464 B CN 106124464B
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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 devices for detection of heavy metal ion, comprising: light source module, wavelength division multiplexer, the first fiber coupler, transmission fiber, 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 being arranged on detection optical fiber by it, can on site, heavy metal ion in real-time monitoring water, by metal nanoparticle enhancing fluorescent technique in conjunction with optical fiber, quantum dot, contents of many kinds of heavy metal ion can detecte；It is sent to host computer in real time, administrative staff is facilitated to check and monitor by setting radio transmitting device and host computer, the heavy metal ion that signal apparatus for regulating can be detected.The sensitivity of detection and accuracy are high, realize instrument miniaturization, portability, the ability for having both distal end detection, real-time analysis, on-site test and dynamic detection.
Description
Technical field:
The invention belongs to detection of heavy metal ion equipment technical fields, are specifically related to a kind of for detection of heavy metal ion
Fibre-optical sensing device.
Background technique:
The features such as pollution is due to chronicity, cumulative bad, latency and irreversibility caused by heavy metal element, it has also become danger
One of maximum environomental pollution source of evil.Accurately, the heavy metal contaminants in time in the carriers such as determination of the environment, waste water and food are dense
Degree, is the key that Heavy Metal Pollution Control.The conventional method of analysis of heavy metal ion mainly has spectroscopic methodology, 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
Belong to the standard of ion detection, these standards are all based on mature spectroscopic methodology, such as color developing agent complex reaction spectrophotometric
Method, atomic absorption spectrophotometry, atomic fluorescence spectrometry, inductively coupled plasma mass spectrometry etc..
Currently, mature detection of heavy metal ion instrument involves great expense, structure is complicated, and an instrument is typically only capable to for one
Heavy metal species pollutant is detected.For first heavy metal ion monitoring instrument the shortcomings that, some development in laboratory base
In the instrument of electrochemical analysis method and Methods Biochem Anal, these instruments detection speed is fast, instrument is portable, is conducive to reality
Existing field quick detection, but sensitivity and accuracy are lower, the type for detecting heavy metal ion is limited.Therefore, exploitation it is easy,
Fast and efficiently analytical equipment is of great significance for heavy metal contaminants monitoring in water.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:
For this purpose, technical problem to be solved by the present invention lies in the prior art be used for detection of heavy metal ion device and
Method sensitivity and accuracy are lower, and the type for detecting heavy metal ion is limited, to propose a kind of for heavy metal ion inspection
The fibre-optical sensing device of survey.
In order to achieve the above objectives, technical scheme is as follows:
A kind of fibre-optical sensing device for detection of heavy metal ion, comprising:
Light source module, the light source module are wideband light source.
Wavelength division multiplexer, the wavelength division multiplexer are connect with the light source module, for exporting quantum dot fluorescence excitation institute
Need output light.
First fiber coupler, first fiber coupler are connect with the wavelength division multiplexer.
Transmission fiber, the transmission fiber are connect with first fiber coupler, and first fiber coupler is by institute
Wavelength division multiplexer output light is stated to be coupled into the transmission fiber.
Second fiber coupler, second fiber coupler are connect with the transmission fiber.
Detection optical fiber, the detection optical fiber are connect with second fiber coupler, and the side of the detection optical fiber is constituted
There is the optical fiber probe of multiple and different quantum dots.
Signal demodulating equipment, the signal demodulating equipment are connect with the output end of the transmission fiber, for detecting a huge sum of money
Belong to ion.
Radio transmitting device, the radio transmitting device are connect with the signal demodulating equipment.
Host computer, the host computer are connect by radio transmitting device with the signal demodulating equipment, and the host computer is used
In the testing result of real-time monitoring heavy metal ion.
As a preferred embodiment of the above technical solution, the detection optical fiber is D-type optical fiber.
As a preferred embodiment of the above technical solution, the optical fiber probe through overactivation rear surface with aldehyde groups and surface are passed through
The quantum dot of amino group modification is by constituting the optical fiber probe after the covalent bond between group.
As a preferred embodiment of the above technical solution, the transmission fiber is single mode optical fiber.
As a preferred embodiment of the above technical solution, the signal demodulating equipment includes filter, photoelectric conversion module, at signal
Module is managed, the filter is connect with the output end of the transmission fiber, the first end of the photoelectric conversion module and the filter
The connection of wave device, the second end of the photoelectric conversion module are connect with the signal processing module.
As a preferred embodiment of the above technical solution, the radio transmitting device is Zigbee radio transmitting device.
As a preferred embodiment of the above technical solution, the host computer is also connected with display screen, and the display screen is used for a huge sum of money
The testing result for belonging to ion is shown.
The beneficial effects of the present invention are: quantum dot and optical fiber are bonded stabilization by being arranged on detection optical fiber by it
Fluorescence optical fiber probe, can on site, heavy metal ion in real-time monitoring water, by metal nanoparticle enhancing fluorescent technique with
Optical fiber, quantum dot combine, and can detecte contents of many kinds of heavy metal ion, and the sensitivity of detection and accuracy are high；It is wireless by setting
Transmitting device and host computer, the heavy metal ion that signal apparatus for regulating can be detected are sent to host computer in real time, facilitate pipe
Reason personnel check and monitor.The present apparatus realizes instrument miniaturization, portability, has both distal end detection, analysis in real time, scene
The ability of detection and dynamic detection.
Detailed description of the invention:
The following drawings are only intended to schematically illustrate and explain the present invention, 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 schematic diagram of one embodiment of the invention.
Symbol description in figure:
1- light source module, 2- wavelength division multiplexer, the first fiber coupler of 3-, 4- transmission fiber, the second fiber coupler of 5-,
6- detection optical fiber, 7- signal apparatus for regulating, 8- radio transmitting device, 9- host computer, 601- optical fiber probe, 701- filter,
702- photoelectric conversion module, 703- signal processing module.
Specific embodiment:
As shown in Figure 1, the fibre-optical sensing device for detection of heavy metal ion of the invention, comprising:
Light source module 1, the light source module 1 are wideband light source.
Wavelength division multiplexer 2, the wavelength division multiplexer 2 are connect with the light source module 1, for exporting quantum dot fluorescence excitation
Required output light.
First fiber coupler 3, first fiber coupler 3 are connect with the wavelength division multiplexer 2.
Transmission fiber 4, the transmission fiber 4 are connect with first fiber coupler 3, first fiber coupler 3
2 output light of wavelength division multiplexer is coupled into the transmission fiber 4.In the present embodiment, the transmission fiber 4 is single-mode optics
It is fine.
Second fiber coupler 5, second fiber coupler 5 are connect with the transmission fiber 4.
Detection optical fiber 6, the detection optical fiber 6 are connect with second fiber coupler 5, the side of the detection optical fiber 6
Constitute the optical fiber probe 601 for there are multiple and different quantum dots.In the present embodiment, the detection optical fiber 6 is D-type optical fiber.Through overactivation
The quantum dot of optical fiber probe of the rear surface with aldehyde groups and surface by amino group modification passes through the covalent knot between group
The optical fiber probe 601 is constituted after conjunction.When needing to detect, the optical fiber probe of corresponding heavy metal ion is set on detection optical fiber 6,
Pass through the one or more contents and concentration to detect heavy metal ion of setting.The sensitive zones of detection optical fiber 6 are by optical fiber side
The fiber array that different quantum dots are fixed on surface is constituted, and different quantum dots have specificity fluorescent to certain heavy metal ion
The effect of quenching, in detection process, optical fiber probe and surface of the surface with aldehyde groups carried out the amount of amino group modification
Son point constitutes the optical fiber probe for being used for heavy metal ion, when the heavy metal ion in water by being covalently combined between group
When acting on quantum dot surface, quantum dot light emitting effect will be caused to change, this luminescent effect change is recognized with fluorescence intensity,
And with concentration of heavy metal ion existence function relationship, the fluorescence of part quantum dot emission is coupled back in detection optical fiber 6, and is passed through
Coupler is coupled into transmission fiber 4, is exported from the output end of transmission fiber 4.
Signal demodulating equipment 7, the signal demodulating equipment 7 are connect with the output end of the transmission fiber 4, for detecting weight
Metal ion.As shown in Fig. 2, the signal demodulating equipment 7 includes filter 701, photoelectric conversion module 702, signal processing mould
Block 703, the filter 701 are connect with the output end of the transmission fiber 4, the first end of the photoelectric conversion module 702 with
The filter 701 connects, and the second end of the photoelectric conversion module 702 is connect with the signal processing module 703.
Radio transmitting device 8, the radio transmitting device 8 are connect with the signal demodulating equipment 7.In the present embodiment, institute
Stating radio transmitting device 8 is Zigbee radio transmitting device.
Host computer 9, the host computer 9 is connect by radio transmitting device 8 with the signal demodulating equipment 7, described upper
Machine 9 is used for the testing result of real-time monitoring heavy metal ion.In the present embodiment, the host computer 9 is also connected with display screen 901,
The display screen 901 is for showing 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, comprising: light source module, wavelength-division
Multiplexer, the first fiber coupler, transmission fiber, the second fiber coupler, detection optical fiber, signal demodulating equipment, wireless transmission
Device, host computer.Quantum dot and optical fiber are bonded stable fluorescence optical fiber probe by being arranged on detection optical fiber by it, can
With on site, heavy metal ion in real-time monitoring water, by metal nanoparticle enhancing fluorescent technique in conjunction with optical fiber, quantum dot,
It can detecte contents of many kinds of heavy metal ion, the sensitivity of detection and accuracy are high；It passes through setting radio transmitting device and host computer,
The heavy metal ion that signal apparatus for regulating can be detected is sent to host computer in real time, and administrative staff is facilitated to check and supervise
It surveys.Realize instrument miniaturization, portability, the ability for having both distal end detection, real-time analysis, on-site test and dynamic detection.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (6)
1. a kind of fibre-optical sensing device for detection of heavy metal ion characterized by comprising
Light source module (1), the light source module (1) are wideband light source；
Wavelength division multiplexer (2), the wavelength division multiplexer (2) connect with the light source module (1), swash for exporting quantum dot fluorescence
Output light needed for sending out；
First fiber coupler (3), first fiber coupler (3) connect with the wavelength division multiplexer (2)；
Transmission fiber (4), the transmission fiber (4) connect with first fiber coupler (3), first fiber coupler
(3) wavelength division multiplexer (2) output light is coupled into the transmission fiber (4)；
Second fiber coupler (5), second fiber coupler (5) connect with the transmission fiber (4)；
Detection optical fiber (6), the detection optical fiber (6) connect with second fiber coupler (5), the detection optical fiber (6)
Side constitutes the optical fiber probe (601) for having multiple and different quantum dots；
Signal demodulating equipment (7), the signal demodulating equipment (7) connect with the output end of the transmission fiber (4), for detecting
Heavy metal ion；
Radio transmitting device (8), the radio transmitting device (8) connect with the signal demodulating equipment (7)；
Host computer (9), the host computer (9) is connect by radio transmitting device (8) with the signal demodulating equipment (7), described
Host computer (9) is used for the testing result of real-time monitoring heavy metal ion；
The signal demodulating equipment (7) includes filter (701), photoelectric conversion module (702), signal processing module (703), institute
It states filter (701) to connect with the output end of the transmission fiber (4), the first end of the photoelectric conversion module (702) and institute
Filter (701) connection is stated, the second end of the photoelectric conversion module (702) is connect with the signal processing module (703).
2. the fibre-optical sensing device according to claim 1 for detection of heavy metal ion, it is characterised in that: the detection
Optical fiber (6) is D-type optical fiber.
3. the fibre-optical sensing device according to claim 1 for detection of heavy metal ion, it is characterised in that: through overactivation
The quantum dot of optical fiber probe of the rear surface with aldehyde groups and surface by amino group modification passes through the covalent knot between group
The optical fiber probe (601) are constituted after conjunction.
4. the fibre-optical sensing device according to claim 1 for detection of heavy metal ion, it is characterised in that: the transmission
Optical fiber (4) is single mode optical fiber.
5. the fibre-optical sensing device according to claim 1 for detection of heavy metal ion, it is characterised in that: described wireless
Transmitting device (8) is Zigbee radio transmitting device.
6. the fibre-optical sensing device according to claim 1 for detection of heavy metal ion, it is characterised in that: described upper
Machine (9) is also connected with display screen (901), and the display screen (901) is for showing 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 true CN106124464B (en) | 2018-12-04 |
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| CN106596480B (en) * | 2016-12-01 | 2020-03-10 | 中国人民大学 | Mercury ion nano sensor and preparation method and application thereof |
| CN118688413A (en) * | 2024-08-22 | 2024-09-24 | 核工业(天津)工程勘察院有限公司 | Underground sewage monitoring method, system and equipment based on quantum dot sensor network |
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| CN1587979A (en) * | 2004-09-15 | 2005-03-02 | 中国科学院上海光学精密机械研究所 | Biological total internal reflection type near-field scanning microscope |
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Effective date of registration: 20200922 Address after: 402760 No. 123 Jianshan Road, Bishan District, Chongqing Patentee after: CHONGQING WANTAI ELECTRIC POWER TECHNOLOGY Co.,Ltd. Address before: 402760 No. 123, Jian Shan Road, Bi Quan street, Bishan District, Chongqing. Patentee before: CHONGQING HUANGJUESHU OPTOELECTRONICS TECHNOLOGY Co.,Ltd. |