CN117554339A - Fluorescent detection device for petroleum pollutants in water - Google Patents
Fluorescent detection device for petroleum pollutants in water Download PDFInfo
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- CN117554339A CN117554339A CN202311313340.5A CN202311313340A CN117554339A CN 117554339 A CN117554339 A CN 117554339A CN 202311313340 A CN202311313340 A CN 202311313340A CN 117554339 A CN117554339 A CN 117554339A
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- 238000001514 detection method Methods 0.000 title claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000003208 petroleum Substances 0.000 title claims abstract description 43
- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 38
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 38
- 238000001917 fluorescence detection Methods 0.000 claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 230000005284 excitation Effects 0.000 claims description 59
- 229920000742 Cotton Polymers 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 150000004945 aromatic hydrocarbons Chemical class 0.000 abstract description 4
- 230000004044 response Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 22
- 238000000034 method Methods 0.000 description 14
- 238000005259 measurement Methods 0.000 description 6
- 239000003960 organic solvent Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 238000001237 Raman spectrum Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000012625 in-situ measurement Methods 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004566 IR spectroscopy Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 238000002798 spectrophotometry method Methods 0.000 description 2
- AKYHKWQPZHDOBW-UHFFFAOYSA-N (5-ethenyl-1-azabicyclo[2.2.2]octan-7-yl)-(6-methoxyquinolin-4-yl)methanol Chemical compound OS(O)(=O)=O.C1C(C(C2)C=C)CCN2C1C(O)C1=CC=NC2=CC=C(OC)C=C21 AKYHKWQPZHDOBW-UHFFFAOYSA-N 0.000 description 1
- 239000001576 FEMA 2977 Substances 0.000 description 1
- 230000002902 bimodal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- LOUPRKONTZGTKE-UHFFFAOYSA-N cinchonine Natural products C1C(C(C2)C=C)CCN2C1C(O)C1=CC=NC2=CC=C(OC)C=C21 LOUPRKONTZGTKE-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002189 fluorescence spectrum Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 229960003110 quinine sulfate Drugs 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
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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
-
- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention discloses a fluorescence detection device for petroleum pollutants in water, which comprises: the upper computer is used for communicating with the lower computer; the driving power supply is used for driving the fluorescent light path module to perform a fluorescent detection task; the lower computer is used for communicating with the upper computer; the fluorescence light path module is used for receiving the instruction sent by the lower computer and carrying out fluorescence detection task on the target sample according to the instruction; and the photoelectric conversion amplifier module is used for receiving the signal output by the fluorescent light path module and transmitting the signal to the lower computer. The beneficial effects of the invention are as follows: by arranging the upper computer, the driving power supply, the lower computer, the photoelectric conversion amplifier and the fluorescent light path module, the characteristics of different wavelengths of light emitted by aromatic hydrocarbon components in petroleum pollutants after being irradiated by light of specific wavelengths are utilized for detection, and the petroleum pollutant detection device has the advantages of high sensitivity, high response speed, good selectivity, no damage to samples and the like.
Description
Technical Field
The invention relates to the field of detection equipment for petroleum pollutants in water, in particular to a fluorescence detection device for petroleum pollutants in water.
Background
Currently, the methods for measuring petroleum pollutants specified by various national and industry standards mainly comprise a weight method (SL 93.1-1994), a gas chromatography method (HJ 894-2017), an infrared spectrophotometry (HJ 637-2012), a non-dispersive infrared spectrophotometry (water and wastewater monitoring and analyzing method), an ultraviolet spectrophotometry, a fluorescence spectrophotometry and the like (GB 17378.4-2007). However, the method needs to sample the sample from the site and then extract and measure the sample by the organic solvent, so the time and labor cost are high, a large amount of organic solvent is needed, high-frequency monitoring and all-weather monitoring are difficult to realize, and the real pollution condition of the water body cannot be reflected in time.
In order to realize rapid determination, CN113984668A discloses a portable detector and a rapid detection method for petroleum pollutants in soil and underground water based on Raman spectrum, a portable spectrometer is designed based on a Raman and fluorescence spectrum bimodal principle, rapid identification and quantification of petroleum pollutants in water and soil are realized, but organic solvent extraction is needed, and CN116818726A with serious interference of the Raman spectrum in practical application discloses a fluorescence instrument and a method for determining petroleum content in water, which aim at the problem of unstable detection result caused by heating in the detection process by using an LED light source, and the problems of frequent preparation of standard liquid and stability are solved by calibrating the instrument sensitivity by using quinine sulfate, however, the patent does not disclose the composition and principle of the instrument, and the determination by using organic solvent extraction is needed; CN202021594144.1 discloses a probe-inserted online oil-in-water detector, which realizes in-situ rapid determination of petroleum in fluid by an infrared method or an ultraviolet method, and is characterized in that the self-cleaning function of the device is adopted to solve the problem that the determination result is affected by pollution in the glass tube determination process, but the sensitivity of the ultraviolet method and the infrared method is lower, and the device is only suitable for determination of petroleum pollutants in liquid with stable component composition under specific working conditions.
Disclosure of Invention
Aiming at the problems, the invention provides a fluorescence detection device for petroleum pollutants in water, which mainly solves the problems of the background technology.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a fluorescence detection device for petroleum pollutants in water, comprising:
the upper computer is used for communicating with the lower computer;
the driving power supply is used for driving the fluorescent light path module to perform a fluorescent detection task;
the lower computer is used for communicating with the upper computer;
the fluorescence light path module is used for receiving the instruction sent by the lower computer and carrying out a fluorescence detection task on the target sample according to the instruction;
and the photoelectric conversion amplifier module is used for receiving the signal output by the fluorescent light path module and transmitting the signal to the lower computer.
In some embodiments, the fluorescent light path module is installed inside the cylinder shell in sequence along the axis direction of the cylinder shell, and the upper computer communicates with the lower computer in a wired or wireless mode.
In some embodiments, the portable electronic device further comprises a square shell, wherein the driving power supply, the lower computer, the fluorescent light path module and the fluorescent light path module are all installed inside the square shell, and the upper computer is installed on the outer wall surface of the square shell and is in communication with the lower computer in a wired or wireless mode.
In some embodiments, the surface of the square housing is provided with an aperture.
In some embodiments, the square housing is internally provided with light absorbing cotton.
In some embodiments, the fluorescent light path module comprises a first light path and a second light path which are perpendicular to each other, wherein the fluorescent light path module comprises an excitation light source, a collimating lens, a light source filter, a first lens window, a first light window and an excitation area which are coaxially and sequentially arranged along the first light path, an inclined dichroic mirror is arranged between the light source filter and the first lens window, and the fluorescent light path module further comprises a reference detection unit, a second lens, an emission filter and a detection unit which are coaxially and sequentially arranged along the second light path, wherein the reference detection unit is arranged on the reflecting side of the dichroic mirror, and the second lens, the emission filter and the detection unit are arranged on the transmitting side of the dichroic mirror.
In some embodiments, the fluorescent light path module comprises a first light path and a second light path which are perpendicular to each other, wherein the fluorescent light path module comprises an excitation light source, a collimating lens, a light source filter and an inclined dichroic mirror which are coaxially and sequentially arranged along the first light path, and further comprises an excitation area, a first light window, a first lens window, a second lens, an emission filter and a detection unit which are coaxially and sequentially arranged along the second light path, wherein the excitation area, the first light window and the first lens window are arranged on the reflecting side of the dichroic mirror, and the second lens, the emission filter and the detection unit are arranged on the transmitting side of the dichroic mirror.
In some embodiments, the fluorescent light path module comprises a first light path and a second light path which are perpendicular to each other, an excitation light source, a collimating lens, a light source filter, a second light window and an excitation area which are coaxially and sequentially arranged along the first light path, the excitation area is used as an intersection point of the first light path and the second light path, and the fluorescent light path module further comprises a third light window, a second lens, an emission filter and a detection unit which are coaxially and sequentially arranged along the second light path.
In some embodiments, the excitation light source comprises an ultraviolet LED light source having a center wavelength of 254nm, 275nm, 310nm, or 365 nm.
In some embodiments, the emission filter comprises a bandpass filter having a center wavelength of 365nm, 450 nm.
Compared with the prior art, the invention has the beneficial effects that: (1) by arranging the upper computer, the driving power supply, the lower computer, the photoelectric conversion amplifier and the fluorescent light path module, the characteristics of different wavelengths of light emitted by aromatic hydrocarbon components in petroleum pollutants after being irradiated by light of specific wavelengths are utilized for detection, and the device is portable and has lower running cost; (2) the light source intensity is calibrated in real time through the reference detection unit, so that frequent calibration by using a calibration liquid is avoided, and the device is good in stability, convenient and easy to use; (3) the method can simultaneously realize a high-sensitivity enrichment extraction measurement mode and an environment-friendly in-situ measurement mode with high response speed, and avoid using a large amount of organic solvents for enrichment extraction.
Drawings
FIG. 1 is a schematic structural diagram of a fluorescence detection device for petroleum pollutants in water according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a fluorescence detection device for petroleum pollutants in water according to still another embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a fluorescent light path module disclosed in a second embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a fluorescence light path module disclosed in a third embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a fluorescent light path module disclosed in a fourth embodiment of the present invention;
wherein: 1-an upper computer; 2-a driving power supply; 3-a lower computer; a 4-photoelectric conversion amplifier; a 5-fluorescent light path module; 11-an excitation light source; 12-a collimating lens; 13-a light source filter; 14-a second light window; a 21-dichroic mirror; 31-a reference detection unit; 41-a first lens; 42-a first light window; 51-excitation region; 61-a second lens; 62-an emission filter; 63-a detection unit; 64-third light window.
Detailed Description
The present invention will be described in further detail with reference to the drawings and the detailed description below, in order to make the objects, technical solutions and advantages of the present invention more clear and distinct. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the matters related to the present invention are shown in the accompanying drawings.
Example 1
The embodiment provides a fluorescence detection device for petroleum pollutants in water, which is characterized in that an upper computer 1, a driving power supply 2, a lower computer 3, a photoelectric conversion amplifier 4 and a fluorescence light path module 5 are arranged, and the characteristics of different wavelengths of light emitted by aromatic hydrocarbon components in petroleum pollutants after being irradiated by light with specific wavelengths are utilized for detection, so that the fluorescence detection device has the advantages of high sensitivity, high response speed, good selectivity, no damage to samples and the like.
The device mainly comprises:
the upper computer 1 is used for communicating with the lower computer 3, and specifically, the upper computer 1 is used for man-machine interaction, instruction sending, data processing and storage, system state monitoring and the like, and industrial PLC, handheld tablet personal computers, handheld controllers and the like can be selected.
The driving power supply 2 is used for driving the fluorescent light path module 5 to perform fluorescent detection tasks, converting an external constant voltage power supply into a constant current and constant voltage mode and providing electric energy required by the excitation light source.
The lower computer 3 is used for communicating with the upper computer 1, and specifically, the lower computer 3 is used for receiving and executing instructions of the upper computer 1, including a switch of an excitation light source, data acquisition and the like.
The fluorescence light path module 5 is configured to receive an instruction sent by the lower computer 3, and perform a fluorescence detection task on a target sample according to the instruction, and specifically, the fluorescence light path module 5 is configured to transmit excitation light emitted by an excitation light source to the sample through an optical component, and then transmit fluorescence emitted by the sample to a detection unit.
The photoelectric conversion amplifier module 4 is configured to receive the signal output by the fluorescent light path module 5 and transmit the signal to the lower computer 3, and specifically, the photoelectric conversion amplifier module 4 is configured to receive the electrical signal of the detection unit, amplify the weak electrical signal, and output the weak electrical signal through voltage.
To achieve field on-site/in-situ determination of petroleum in water and laboratory rapid determination. The embodiment provides two optional fluorescence detection device structures, as shown in fig. 1, and further comprises a cylindrical shell, a driving power supply 2, a lower computer 3, a fluorescence light path module 5, and the fluorescence light path module 5 sequentially installed inside the cylindrical shell along the axis direction of the cylindrical shell, wherein the upper computer 1 communicates with the lower computer 3 in a wired or wireless mode. When the cylindrical shell is adopted, the fluorescence detection device based on the cylindrical shell can be directly immersed into a water body for measurement, excitation light directly enters the water body to be measured through the light window to in-situ measure the fluorescence intensity in the water sample to be measured, so that the field in-situ measurement of petroleum in water is realized.
As shown in fig. 2, the portable electronic device further comprises a square shell, a driving power supply 2, a lower computer 3, a fluorescent light path module 5 and the fluorescent light path module 5 are all installed inside the square shell, and the upper computer 1 is installed on the outer wall surface of the square shell and is communicated with the lower computer 3 in a wired or wireless mode. When the square shell implementation mode is adopted, the fluorescence detection device based on the square shell is used for measuring a water sample to be measured by placing the water sample in a cuvette, so that the field on-site/in-situ measurement of petroleum in water is realized.
When the fluorescent detection device with the square shell is adopted, the surface of the square shell is provided with holes, or the inside of the square shell is provided with light absorption cotton, so that interference caused by the reflection effect of excitation light is eliminated.
Example two
On the basis of the first embodiment, the present embodiment proposes a fluorescence detection device for petroleum pollutants in water, which includes a first optical path and a second optical path that are perpendicular to each other, the fluorescence optical path module 5 includes an excitation light source 11, a collimating lens 12, a light source filter 13, a first lens window 41, a first light window 42 and an excitation area 51 that are coaxially and sequentially disposed along the first optical path, an inclined dichroic mirror 21 is disposed between the light source filter 13 and the first lens window 41, and a reference detection unit 6331, a second lens filter 61, an emission filter 62 and a detection unit 63 that are coaxially and sequentially disposed along the second optical path, wherein the reference detection unit 6331 is disposed on a reflection side of the dichroic mirror 21, and the second lens 61, the emission filter 62 and the detection unit 63 are disposed on a transmission side of the dichroic mirror 21.
In this optical path, the dichroic mirror 21 having a suitable wavelength range is selected so as to allow excitation light of a specific wavelength to pass therethrough, reflecting fluorescence of a specific wavelength emitted from the sample to be measured. When the excitation light source 11 is in an on state, after the excitation light emitted by the excitation light source 11 sequentially passes through the collimating lens 12 and the light source filter 13, the excitation light selectively passes through the dichroic mirror 21, a part of the less excitation light is reflected to the reference detection unit 31 for measurement, and the other part of the excitation light passes through the first lens 41 and the first light window 42 and then enters the excitation region 51; after the petroleum pollutants in the water sample to be detected in the excitation area 51 are irradiated by excitation light with specific wavelength, the generated fluorescence sequentially passes through the first light window 42 and the first lens 41, then sequentially passes through the second lens 61 and the emission filter 62, and then enters the detection unit 63 for measurement under the reflection effect of the dichroic mirror 21.
Example III
On the basis of the first embodiment, the present embodiment proposes a fluorescence detection device for petroleum pollutants in water, which includes a first optical path and a second optical path that are perpendicular to each other, the fluorescence optical path module 5 includes an excitation light source 11, a collimating lens 12, a light source filter 13, and an inclined dichroic mirror 21 coaxially and sequentially disposed along the first optical path, and further includes an excitation area 51, a first optical window 42, a first lens window 41, a second lens 61, an emission filter 62, and a detection unit 63 coaxially and sequentially disposed along the second optical path, wherein the excitation area 51, the first optical window 42, and the first lens window 41 are disposed on a reflective side of the dichroic mirror 21, and the second lens 61, the emission filter 62, and the detection unit 63 are disposed on a transmissive side of the dichroic mirror 21.
In this optical path, the dichroic mirror 21 having an appropriate wavelength range is selected so as to reflect excitation light of a specific wavelength, and fluorescence of a specific wavelength emitted by the sample to be measured passes through. When the excitation light source is in an on state, excitation light emitted by the excitation light source 11 sequentially passes through the collimating lens 12 and the light source filter 13, is reflected by the dichroic mirror 21, sequentially passes through the first lens 41 and the first light window 42, and enters the excitation area 51; the petroleum pollutants of the water sample to be detected in the excitation area 51 are irradiated by excitation light with specific wavelength, and generated fluorescence sequentially passes through the first light window 42 and the first lens 41, selectively passes through the dichroic mirror 21, sequentially passes through the second lens 61 and the emission filter 62, and then enters the detection unit 63 for measurement.
Example IV
On the basis of the first embodiment, the present embodiment proposes a fluorescence detection device for petroleum pollutants in water, which includes a first optical path and a second optical path that are perpendicular to each other, the fluorescence optical path module 5 includes an excitation light source 11, a collimating lens 12, a light source filter 13, a second light window 14 and an excitation area 51 coaxially and sequentially disposed along the first optical path, and the excitation area 51 serves as an intersection point of the first optical path and the second optical path, and further includes a third light window 64, a second lens 61, an emission filter 62 and a detection unit 63 coaxially and sequentially disposed along the second optical path.
In the light path, when the excitation light source 11 is in an on state, the excitation light emitted by the excitation light source 11 sequentially passes through the collimating lens 12 and the excitation light filter 13, then enters the excitation area 51, petroleum pollutants of a water sample to be detected in the excitation area 51 are irradiated by excitation light with a specific wavelength, and the generated fluorescence sequentially passes through the second lens 61 and the emission filter 62 and then enters the detection unit 63 for measurement.
In the second to fourth embodiments described above, further alternatively, the excitation light source 11 includes, but is not limited to, an ultraviolet LED light source having a center wavelength of 254nm, 275nm, 310nm, or 365 nm. The emission filter 62 includes, but is not limited to, a bandpass filter having a center wavelength of 365nm, 450 nm. The detection unit 63 includes, but is not limited to, a photodiode, a photomultiplier.
In summary, the scheme aims at the fluorescent characteristic of aromatic hydrocarbon components in petroleum pollutants in water, adopts ultraviolet LEDs with higher light power and specific wavelength as excitation light sources, belongs to special instruments for detecting petroleum pollutants in water, and does not need to use a light splitting system, so that the instruments have the advantages of high sensitivity, lower cost and the like. Furthermore, the device for detecting the petroleum pollutants in the water has the advantages of small volume and portability of instruments, and can be applied to the fields of field environment monitoring, environmental accident site emergency detection and the like. Finally, the method directly measures petroleum pollutants in water, avoids using organic solvent for extraction, and has the advantages of high measuring speed and environmental friendliness.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the essence of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A fluorescence detection device for petroleum pollutants in water, comprising:
the upper computer is used for communicating with the lower computer;
the driving power supply is used for driving the fluorescent light path module to perform a fluorescent detection task;
the lower computer is used for communicating with the upper computer;
the fluorescence light path module is used for receiving the instruction sent by the lower computer and carrying out a fluorescence detection task on the target sample according to the instruction;
and the photoelectric conversion amplifier module is used for receiving the signal output by the fluorescent light path module and transmitting the signal to the lower computer.
2. The fluorescence detection device of petroleum pollutants in water according to claim 1, further comprising a cylindrical shell, wherein the driving power supply, the lower computer, the fluorescence light path module and the fluorescence light path module are sequentially arranged inside the cylindrical shell along the axis direction of the cylindrical shell, and the upper computer is communicated with the lower computer in a wired or wireless mode.
3. The fluorescence detection device of petroleum pollutants in water according to claim 1, further comprising a square housing, wherein the driving power supply, the lower computer, the fluorescence light path module and the fluorescence light path module are all arranged inside the square housing, and the upper computer is arranged on the outer wall surface of the square housing and is in communication with the lower computer in a wired or wireless mode.
4. A fluorescence detection device for petroleum pollutants in water as defined in claim 3, wherein the surface of said square housing is provided with openings.
5. A fluorescence detection device for petroleum pollutants in water as defined in claim 3, wherein said square housing is internally provided with light absorbing cotton.
6. The fluorescence detection device for petroleum pollutants in water according to claim 1, comprising a first light path and a second light path which are perpendicular to each other, wherein the fluorescence light path module comprises an excitation light source, a collimating lens, a light source filter, a first lens window, a first light window and an excitation area which are coaxially and sequentially arranged along the first light path, an inclined dichroic mirror is arranged between the light source filter and the first lens window, and the fluorescence detection device further comprises a reference detection unit, a second lens, an emission filter and a detection unit which are coaxially and sequentially arranged along the second light path, wherein the reference detection unit is arranged on the reflecting side of the dichroic mirror, and the second lens, the emission filter and the detection unit are arranged on the transmitting side of the dichroic mirror.
7. The fluorescence detection device of petroleum pollutants in water according to claim 1, comprising a first light path and a second light path which are perpendicular to each other, wherein the fluorescence light path module comprises an excitation light source, a collimating lens, a light source filter and an inclined dichroic mirror which are coaxially and sequentially arranged along the first light path, and further comprises an excitation area, a first light window, a first lens window, a second lens, an emission filter and a detection unit which are coaxially and sequentially arranged along the second light path, wherein the excitation area, the first light window and the first lens window are arranged on a reflecting side of the dichroic mirror, and the second lens, the emission filter and the detection unit are arranged on a transmitting side of the dichroic mirror.
8. The fluorescence detection device for petroleum pollutants in water according to claim 1, comprising a first light path and a second light path which are perpendicular to each other, wherein the fluorescence light path module comprises an excitation light source, a collimating lens, a light source filter, a second light window and an excitation area which are coaxially and sequentially arranged along the first light path, the excitation area is taken as an intersection point of the first light path and the second light path, and the fluorescence detection device further comprises a third light window, a second lens, an emission filter and a detection unit which are coaxially and sequentially arranged along the second light path.
9. A fluorescence detection device for petroleum pollutants in water according to any of claims 6-8, wherein said excitation light source comprises an ultraviolet LED light source having a central wavelength of 254nm, 275nm, 310nm or 365 nm.
10. A fluorescence detection device for petroleum pollutants in water according to any of claims 6 to 8, wherein said emission filter comprises a bandpass filter having a central wavelength of 365nm or 450 nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311313340.5A CN117554339A (en) | 2023-10-11 | 2023-10-11 | Fluorescent detection device for petroleum pollutants in water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311313340.5A CN117554339A (en) | 2023-10-11 | 2023-10-11 | Fluorescent detection device for petroleum pollutants in water |
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| CN117554339A true CN117554339A (en) | 2024-02-13 |
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| CN202311313340.5A Pending CN117554339A (en) | 2023-10-11 | 2023-10-11 | Fluorescent detection device for petroleum pollutants in water |
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