CN105445253B - A kind of equipment for detecting antibiotic concentration in water - Google Patents
A kind of equipment for detecting antibiotic concentration in water Download PDFInfo
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- CN105445253B CN105445253B CN201510778059.8A CN201510778059A CN105445253B CN 105445253 B CN105445253 B CN 105445253B CN 201510778059 A CN201510778059 A CN 201510778059A CN 105445253 B CN105445253 B CN 105445253B
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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
- G01N21/65—Raman scattering
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Abstract
The invention discloses a kind of equipment for detecting antibiotic concentration in water.The equipment includes:Lower seat, upper cover, rotation axis, light source, scattering light extraction means, detector and circuit main board, the lower seat are connected by the rotation axis with the upper cover;The lower seat is provided with a groove, and the bottom of the groove is equipped with one layer of metallic plate using the pole as electric field;The position of lower seat upper surface is provided with one layer of metallic plate using another pole as electric field described in the upper cover face;The light source is installed on the position of groove described in the upper cover face;The scattering light extraction means are installed on the position of groove described in the upper cover face;The detector is installed on the upper lid;And the circuit main board, it is connected with the detector.The present invention coordinates electric-field enhancing technology to enhance the Raman diffused light of antibiotic in water sample by graphene, so that the equipment has extremely low detection limit and high sensitivity and accuracy.
Description
Technical field
The present invention relates to detection fields, and in particular, to a kind of equipment for detecting antibiotic concentration in water.
Background technology
Antibiotic is widely used in controlling the bacteriosis of the mankind, poultry and aquatic animal.But by long-term
It uses, it has been found that antibiotic has many harm to the health and environment of the mankind.Many antibiotic are all toxic anti-to the mankind
Should, and can largely be developed immunity to drugs using antibiotic.Therefore, countries in the world launch respectively policy and are prevented or restricted from antibiotic
It uses.
The current method for detecting remaining antibiotic both at home and abroad mainly includes bioassary method, and (microbiological assay is put
Penetrate receptor assay etc.), (radiation is exempted from for Physico-chemical tests method (spectral method, chromatography and its joint technology etc.) and immunoassay
Epidemic disease measuring method, enzymoimmunoassay, fluorescence immunoassay etc.).Bioassary method is using some biologies to antibiotic
Special reaction carrys out the method for qualitatively or quantitatively measuring antibiotic.Physico-chemical tests method is the certain environment condition in laboratory
Under, detect a kind of side of evaluation commercial quality by various instruments, equipment and reagent and with the method for physics, chemistry
Method.In addition, also someone is detected by spectrographic technique, especially Raman spectrum.Since spectrographic technique is from hydrone
It influences, the element in water can be measured well.Therefore, substantial amounts of research has been carried out to the detection of antibiotic in water,
But conventional Raman analysis is still mainly carried out in the lab, also surface enhanced material is introduced into detection by someone, mainly
It is the colloidal sol plasma membrane of gold or silver, for enhancing Raman signal.
However, bioassary method needs measured object acting on certain biology, and the physiology for also needing to observation biology is anti-
It should.Therefore, the detection sensitivity of bioassary method is relatively low, takes and grows very much, and is influenced to compare by individual and operating method
Greatly.Although the accuracy of Physico-chemical tests method is high, high sensitivity, instrument and equipment and operation sequence are more complicated, and testing cost is held high
Expensive, time-consuming, it is impossible to quickly be tested and analyzed, but also reviewer is required to possess sturdy basic theoretical knowledge and ripe
Experienced operating technology.Immunoassay is complicated for operation, exists simultaneously the defects of false positive rate is high.Conventional Raman spectrum detection side
For method mainly or for lab analysis, accuracy and portability have very big restriction.Due to the complexity of in-site measurement
The use of large-scale highly sophisticated device is limited, existing technology still cannot meet the needs of in-site measurement.In addition, though it uses
Surface enhanced material makes detection limit have certain improvement, and still, the preparation process of some substrates in higher sensitivity is more multiple
It is miscellaneous, there is higher requirement to its roughness, and specific aim is stronger, meanwhile, comparison is tight to be required to pH and temperature in detection process
Lattice, it is difficult to which application detects at the scene.
The content of the invention
The object of the present invention is to provide a kind of equipment for detecting antibiotic concentration in water.The equipment passes through graphene
Cooperation electric-field enhancing technology enhances the Raman diffused light of water sample, can not only realize Site Detection, but also have
Extremely low detection limit and high sensitivity and accuracy.
To achieve these goals, the present invention provides a kind of equipment for detecting antibiotic concentration in water.It is described to set
It is standby to include:Lower seat, upper cover, rotation axis, light source, scattering light extraction means, detector and circuit main board, the lower seat pass through institute
Rotation axis is stated to be connected with the upper cover;The lower seat is provided with a groove, the bottom of the groove be equipped with one layer of metallic plate with
A pole as electric field;The position of lower seat upper surface described in the upper cover face is provided with one layer of metallic plate using as the another of electric field
One pole;The light source is installed on the position of groove described in the upper cover face;The scattering light extraction means, are installed on described
The position of groove described in lid face in the case of emitting incident light in the light source, receives the water sample from the groove
Scattering light in product, and extract Raman diffused light from the scattering light;The detector is installed on the upper lid, is used for
The Raman diffused light is received, and the Raman diffused light is converted into electric signal;And the circuit main board, with the detection
Device connects, for the concentration of antibiotic in the water sample to be calculated according to the electric signal and preset relation formula.
Wherein, the upper surface of the metallic plate of the bottom portion of groove is coated with one layer and is solidificated in silica by bilayer graphene
The surface enhanced material of upper formation.
Wherein, the equipment further includes:Buckle, is installed in the rotation axis, for detecting the water sample moderate resistance
In the case of raw element concentration, the lower seat and the upper cover are locked, so that cannot phase after the lower seat and upper cover fitting
To movement.
Wherein, the equipment further includes handle, and the handle is appropriately extended by the upper cover afterbody and is formed.
Wherein, the light source is the LD laser diodes that optical maser wavelength is 785nm.
Wherein, be fixed with rechargeable battery in the handle, the rechargeable battery be used for for the LD laser diodes,
Detector and circuit main board provide power supply.
Wherein, the scattering light extraction means include:Receiving lens, light conditioner, polarizer wheel, spectro-grating and
Condenser lens, the receiving lens, for receiving the scattering light in the water sample from the groove;The light conditioner,
On the center line of the receiving lens, for nursing one's health the scattering light;The polarizer wheel, positioned at the light conditioner
Center line on, for from it is described scattering light in extract polarised light;The spectro-grating, with not with the polarizer wheel center line
Vertical angle is located on the polarizer wheel center line, for separating the polarised light of different wave length to obtain Raman diffused light;
The condenser lens, for assembling the Raman diffused light.
Wherein, the equipment further includes:Touching display screen is connected with the circuit main board, for inputting user's selection
Antibiotics information, and show the concentration of antibiotic in the water sample.
Wherein, the circuit main board includes:Signal amplifying apparatus, for amplifying the electric signal from the detector;It makes an uproar
Sound cancellation element is connected with the signal amplifying apparatus, for eliminating the noise of amplified electric signal;Data storage dress
It puts, for storing the concentration of antibiotic in default relational expression and the water sample that is calculated;And control device, with institute
It states noise elimination apparatus to connect with the data storage device, for the Antibiotics information that is selected according to user from the number
According to selection and the corresponding preset relation formula of Antibiotics information in the preset relation formula of storage device storage, and according to elimination
The electric signal of noise and corresponding antibiosis in the water sample is calculated to the corresponding preset relation formula of Antibiotics information
The concentration of element.
Wherein, the Antibiotics information that the control device is additionally operable to be selected according to user adjusts the voltage of the electric field
And select corresponding polarizer from the polarizer wheel.
Through the above technical solutions, extracting Raman diffused light from the scattering light of water sample, and Raman diffused light is converted
The concentration of antibiotic in water sample is calculated into electric signal and according to electric signal and preset relation formula, can not only realize existing
Field detecting, but also with extremely low detection limit and high sensitivity and accuracy.
Description of the drawings
Fig. 1 is the structure diagram provided by the present invention for the equipment of antibiotic concentration in detection water.
Reference sign
1 anode copper coin, 2 surface enhanced material, 3 sample supporting spring, 4 cathode copper coin
5 light source, 6 light source filter plate, 7 exit lens, 8 light conditioner
9 spectro-grating, 10 polarizer wheel, 11 condenser lens, 12 planar array detector
13 circuit main board, 14 touching display screen, 15 rechargeable battery, 16 rotation axis
18 times seats of 17 power supplys and data-interface, 19 upper cover
Specific embodiment
The specific embodiment of the present invention is described in detail below in conjunction with attached drawing.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
Fig. 1 is the structure diagram provided by the present invention for the equipment of antibiotic concentration in detection water.As shown in Figure 1,
Include provided by the present invention for the equipment of antibiotic concentration in detection water:Lower seat 18, upper cover 19, rotation axis 16, light source 5, dissipate
Light extraction means, detector and circuit main board 13 are penetrated, the lower seat 18 is connected by the rotation axis 16 with the upper cover 19;
The lower seat 18 is provided with a groove, and the bottom of the groove is equipped with one layer of metallic plate using the pole as electric field;On described
The position of lower 18 upper surface of seat is provided with one layer of metallic plate using another pole as electric field described in 19 face of lid;The light source 5 is pacified
Position loaded on groove described in 19 face of upper cover;The scattering light extraction means are installed on described in 19 face of upper cover
The position of groove in the case of emitting incident light in the light source 5, receives the scattering in the water sample from the groove
Light, and extract Raman diffused light from the scattering light;The detector is installed in the upper cover 19, described for receiving
Raman diffused light, and the Raman diffused light is converted into electric signal;And the circuit main board 13, connect with the detector
It connects, for the concentration of antibiotic in the water sample to be calculated according to the electric signal and preset relation formula.Thereby, it is described to set
It is standby to realize Site Detection, but also with extremely low detection limit and high sensitivity and accuracy.
In a particular embodiment, the lower seat 18 has a sample supporting spring 3, and it is 1mm's that center, which has depth,
Groove, the groove are used to place water sample.One layer of metallic plate of the bottom portion of groove be anode copper coin 1, the anode copper coin 1
For the copper coin as electric field anode.One layer of metallic plate that the position of lower seat upper surface described in the upper cover face is set is cathode copper
Plate 2, the cathode copper coin 2 are the copper coin as electric field cathode.Why between lower seat 18 and upper cover 19 electric field is set, be because
Can so to improve the intensity of the Raman diffused light of water sample, so as to improve the precision of detection.Preferably, the bottom portion of groove
The upper surface of anode copper coin 1 be coated with one layer by the surface enhanced material 2 that is formed on silica of bilayer graphene curing.
Thereby, the intensity of the Raman diffused light of water sample can be further enhanced.Preferably, the equipment further includes:Buckle, is installed on
In the rotation axis 16, for the antibiotic concentration in the water sample is detected in the case of, lock the lower seat 18 and described
Upper cover 19, so that the lower seat 18 and the upper cover 19 cannot relatively move after being bonded.Specifically, equipment provided by the invention
Mainly include 19 two large divisions of lower seat 18 and upper cover, connected, and can realized around rotation by rotation axis 16 between two large divisions
16 center line of axis rotates, and upper and lower two large divisions is made to closely adhere to together.The feelings of antibiotic concentration in detection water sample is needed
Under condition, operating personnel press upper cover 19.After upper cover 19 is bonded with lower seat 18 operating personnel operate buckle with lock lower seat 18 and
Upper cover 19, so that lower seat 18 and upper cover 19 cannot relatively move.After completing to detect, operating personnel open buckle, upper cover
19 and lower seat 18 separate.At this point, it can clear up or replace the water sample in lower 18 groove of seat.Why needing to detect water sample
It is because can so eliminate the dry of natural light using tight lower seat of lock 18 and the upper cover 19 of being buckled in the case of middle antibiotic concentration
It disturbs.
In specific application, the light source 5 is the LD laser diodes that optical maser wavelength is 785nm, small, stable
Property it is high.Thereby, fluorescence can be overcome to disturb.The scattering light extraction means include:Receiving lens, light conditioner 8, polarizer
Wheel 10, spectro-grating 9 and condenser lens 11, the receiving lens, for receiving dissipating in the water sample from the groove
Penetrate light;The light conditioner 8, on the center line of the receiving lens, for nursing one's health the scattering light;The polarizer
Wheel 10, on the center line of the light conditioner 8, for extracting polarised light from the scattering light;The spectro-grating
9, not to be located at the angle of the polarizer wheel central axis on 10 center line of polarizer wheel, for separating different ripples
Long polarised light is to obtain Raman diffused light;The condenser lens 11, for assembling the Raman diffused light.Specifically, light
Conditioner 8 include slit, optical filter and lens, slit be used for adjust Raman diffused light by intensity and precision, optical filter
For filtering out the light from LD laser diodes, lens are for adjusting the direction of scattering light, so that scattering light is beaten below
On polarizer in polarizer wheel 10.Polarizer extracts polarised light from the scattering light, not only contributes to scattering light extraction dress
Extraction Raman diffused light is put, and also enhances the antijamming capability of scattering light extraction means.In a particular embodiment, exist
The position of 4 face groove of cathode copper coin is set there are two through hole, is respectively fixed with lens, an outgoing for LD laser diodes
Lens 7, another is the receiving lens of scattering light extraction means.It is additionally provided between LD laser diodes and exit lens 7
Light source filter plate 6.The incident light emitted by LD laser diodes reaches groove via light source filter plate 6 and exit lens 7 successively
In water sample.The scattering light of resulting water sample successively via receiving lens, light conditioner 8, polarizer wheel 10, point
Light grating 9 and condenser lens 11 reach detector.It should be noted that condenser lens 11 can gather Raman diffused light
On detector, so as to improve collecting efficiency of the detector to Raman diffused light.Wherein, detector is planar array detector 12.
In a kind of optional embodiment, the equipment further includes:Input unit is connected with the circuit main board, is used
In the Antibiotics information of input user's selection;Display device is connected with the circuit main board, for showing the water sample
The concentration of middle antibiotic.Preferably, the input unit and the display device are touching display screen 14, the touching display screen
It is connected with the circuit main board, for inputting the Antibiotics information of user's selection, and shows antibiotic in the water sample
Concentration.Thereby, the redundancy of equipment is avoided.
In a particular embodiment, the circuit main board 13 includes:Signal amplifying apparatus, for amplifying from the spy
Survey the electric signal of device;Noise elimination apparatus is connected with the signal amplifying apparatus, for eliminating making an uproar for amplified electric signal
Sound;Data storage device, for storing the concentration of antibiotic in default relational expression and the water sample that is calculated;And
Control device is connected with the noise elimination apparatus and the data storage device, for the antibiotic kind selected according to user
Category information selects and the corresponding default pass of Antibiotics information from the preset relation formula that the data storage device stores
It is formula, and the water is calculated according to the electric signal for eliminating noise and with the corresponding preset relation formula of Antibiotics information
The concentration of corresponding antibiotic in sample.Wherein, it is respective to include specific several antibiotic in water sample for the default relational expression
The intensity of Raman spectral characteristics position of spectral line and the relation of concentration.Thereby, the Antibiotics information that can be selected according to user
Calculate the concentration of corresponding antibiotic in water sample.
Preferably, the Antibiotics information that the control device is additionally operable to be selected according to user adjusts the electricity of the electric field
It presses and selects corresponding polarizer from the polarizer wheel.It thereby, can be according to the Antibiotics information that user selects more
Add the concentration for being accurately calculated corresponding antibiotic in water sample.
Specifically, equipment provided by the invention can detect the concentration of Multiple Classes of Antibiotics in water.It needs to detect in user
In the case of the concentration of certain antibiotic in water, user can select input Antibiotics information by touching display screen.So
Afterwards, control device selects the Antibiotics information of input to adjust voltage of electric field so that voltage of electric field can be with resisting according to user
Raw element species matches.Control device selects the Antibiotics information of input to be selected from the polarizer wheel also according to user
Corresponding polarizer.Cause not this is because the characterization intramolecule chemical bond oscillations feature of different types of antibiotic differs
Congener antibiotic is differed in the requirement of the intensity of the light in different polarization direction.According to the species of antibiotic from the polarization
Corresponding polarizer is selected in piece wheel namely is selected according to the characterization intramolecule chemical bond oscillations feature of antibiotic corresponding inclined
Shake piece, not only contributes to scattering light extraction means extraction Raman diffused light, and also enhances the anti-dry of scattering light extraction means
Disturb ability.After optical signal is beaten on planar array detector, system obtains a raman spectral signal, and control device is selected according to user
The Antibiotics information selected selects and Antibiotics information phase from the preset relation formula that the data storage device stores
The intensity of corresponding Raman spectral characteristics position of spectral line and the relational expression of concentration, then by the Raman spectral characteristics of tested antibiotic
The spectral intensity of spectral line position substitutes into relational expression the concentration that corresponding antibiotic in the water sample is calculated.
Wherein, with the concentration of the intensity of the corresponding Raman spectral characteristics position of spectral line of tested antibiotic and tested antibiotic
Relational expression be:
Wherein, C is the concentration of tested antibiotic, IwFor the light intensity of Raman spectral characteristics position of spectral line, W is characterized where peak
Wavelength, whAnd wlRespectively the beginning wavelength of Raman spectrum characteristic peak and end wavelength, a and b are respectively constant.
Preferably, the equipment further includes handle, and the handle is appropriately extended by 19 afterbody of upper cover and is formed.Thereby,
It is convenient hand-held.Preferably, rechargeable battery 15 is fixed in the handle, the rechargeable battery 15 is used for as the LD laser
Diode, detector and circuit main board 13 provide power supply.Thereby, the equipment is not only portable, but also is advantageously implemented scene
Detection.In addition, power supply and data-interface 17 are mounted on the tail end of handle, the power supply and data-interface 17 are USB interface.
Equipment provided by the invention is a kind of equipment that is portable, and can detecting antibiotic concentration in water, can
The concentration of Multiple Classes of Antibiotics in water is measured, the species of antibiotic, the antibiotic that equipment is selected according to user are selected by user
Information adjusts voltage of electric field and corresponding polarizer is selected from polarizer wheel, coordinates electric-field enhancing technology by graphene
The Raman diffused light of water sample is enhanced, so that equipment has down to the detection limit of 1ppb and high accuracy,
Measurement is quick, easy to use.
The preferred embodiment of the present invention is described in detail above in association with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical scheme
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that the specific technical features described in the above specific embodiments, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of equipment for detecting antibiotic concentration in water, which is characterized in that the equipment includes:Lower seat, upper cover, rotation
Axis, light source, scattering light extraction means, detector and circuit main board,
The lower seat is connected by the rotation axis with the upper cover;
The lower seat is provided with a groove, and the bottom of the groove is equipped with one layer of metallic plate using the pole as electric field;
The position of lower seat upper surface is provided with one layer of metallic plate using another pole as electric field described in the upper cover face;
The light source is installed on the position of groove described in the upper cover face;
The scattering light extraction means are installed on the position of groove described in the upper cover face, for the light source emit into
In the case of penetrating light, the scattering light of the water sample from the groove is received, and Raman diffused light is extracted from the scattering light;
The detector is installed on the upper lid, for receiving the Raman diffused light, and the Raman diffused light is converted
Into electric signal;And
The circuit main board is connected with the detector, described in being calculated according to the electric signal and preset relation formula
The concentration of antibiotic in water sample.
2. the equipment according to claim 1 for detecting antibiotic concentration in water, which is characterized in that the bottom portion of groove
The upper surface of metallic plate be covered with one layer by the surface enhanced material that is formed on silica of bilayer graphene curing.
3. the equipment according to claim 1 for detecting antibiotic concentration in water, which is characterized in that the equipment is also wrapped
It includes:
Buckle, is installed in the rotation axis, for the antibiotic concentration in the water sample is detected in the case of, described in locking
Lower seat and the upper cover, so that cannot be relatively moved after the lower seat and upper cover fitting.
4. the equipment according to claim 3 for detecting antibiotic concentration in water, which is characterized in that the equipment is also wrapped
Handle is included, the handle is appropriately extended by the upper cover afterbody and is formed.
5. the equipment according to claim 4 for detecting antibiotic concentration in water, which is characterized in that the light source is sharp
The LD laser diodes of a length of 785nm of light wave.
6. the equipment according to claim 5 for detecting antibiotic concentration in water, which is characterized in that solid in the handle
Surely there is rechargeable battery, the rechargeable battery is used to provide electricity for the LD laser diodes, detector and circuit main board
Source.
7. the equipment according to claim 1 for detecting antibiotic concentration in water, which is characterized in that the scattering light carries
Device is taken to include:
Receiving lens, light conditioner, polarizer wheel, spectro-grating and condenser lens,
The receiving lens, for receiving the scattering light of the water sample from the groove;
The light conditioner, on the center line of the receiving lens, for nursing one's health the scattering light;
The polarizer wheel, on the center line of the light conditioner, for extracting polarised light from the scattering light;
The spectro-grating, not to be located at the angle of the polarizer wheel central axis on the polarizer wheel center line,
For separating the polarised light of different wave length to obtain Raman diffused light;
The condenser lens, for assembling the Raman diffused light.
8. the equipment according to claim 7 for detecting antibiotic concentration in water, which is characterized in that the equipment is also wrapped
It includes:
Touching display screen is connected with the circuit main board, for inputting the Antibiotics information of user's selection, and described in display
The concentration of antibiotic in water sample.
9. the equipment according to claim 8 for detecting antibiotic concentration in water, which is characterized in that the circuit main board
Including:
Signal amplifying apparatus, for amplifying the electric signal from the detector;
Noise elimination apparatus is connected with the signal amplifying apparatus, for eliminating the noise of amplified electric signal;
Data storage device, for storing the concentration of antibiotic in default relational expression and the water sample that is calculated;With
And
Control device is connected with the noise elimination apparatus and the data storage device, for the antibiosis selected according to user
Plain information selects corresponding pre- with Antibiotics information from the preset relation formula that the data storage device stores
If relational expression, and institute is calculated according to the electric signal for eliminating noise and with the corresponding preset relation formula of Antibiotics information
State the concentration of corresponding antibiotic in water sample.
10. the equipment according to claim 9 for detecting antibiotic concentration in water, which is characterized in that the control dress
It puts the voltage for being additionally operable to the Antibiotics information selected according to user the adjusting electric field and is selected from the polarizer wheel
Corresponding polarizer.
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CN103558205A (en) * | 2013-11-05 | 2014-02-05 | 青岛中一监测有限公司 | Environment monitoring sensor based on Raman effect and environment detection method |
CN104897637A (en) * | 2015-03-19 | 2015-09-09 | 复旦大学 | Food safety detection apparatus and detection method based on Raman scattering |
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CN103712927B (en) * | 2012-09-29 | 2016-12-21 | 埃科莱布美国股份有限公司 | Detecting system and method and water treatment system and method |
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US4608344A (en) * | 1981-09-18 | 1986-08-26 | Battelle Memorial Institute | Method for the determination of species in solution with an optical wave-guide |
WO2004095006A1 (en) * | 2003-04-23 | 2004-11-04 | Japan Science And Technology Agency | Differential surface plasmon resonance measuring device and its measuring method |
CN202101939U (en) * | 2011-05-17 | 2012-01-04 | 中国农业科学院油料作物研究所 | Measuring device for aflatoxin |
CN102565023A (en) * | 2011-12-30 | 2012-07-11 | 华东交通大学 | Device and method for fruit and vegetable pesticide residues based on laser Raman spectrometer |
CN103558205A (en) * | 2013-11-05 | 2014-02-05 | 青岛中一监测有限公司 | Environment monitoring sensor based on Raman effect and environment detection method |
CN104897637A (en) * | 2015-03-19 | 2015-09-09 | 复旦大学 | Food safety detection apparatus and detection method based on Raman scattering |
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