CN203337526U - Sample room used for liquid absorption spectrum analysis - Google Patents
Sample room used for liquid absorption spectrum analysis Download PDFInfo
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- CN203337526U CN203337526U CN201320299090XU CN201320299090U CN203337526U CN 203337526 U CN203337526 U CN 203337526U CN 201320299090X U CN201320299090X U CN 201320299090XU CN 201320299090 U CN201320299090 U CN 201320299090U CN 203337526 U CN203337526 U CN 203337526U
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Abstract
The utility model discloses an absorption spectrum collecting sample room used for liquid absorption spectrum analysis. The sample room comprises a sample tube, a light beam emitting end and a light beam receiving end, wherein a tube chamber of the sample tube is used for bearing a liquid sample; the light beam emitting end is jointed with one port of the sample tube and used for leading in the light beam along the longitudinal direction of the sample tube; the light beam receiving end is jointed with the other port of the sample tube and used for receiving the light beam which penetrates through the liquid sample in the tube chamber, wherein the inner wall material of the sample tube and the cross section dimension of the tube chamber are selected as follows: the liquid sample can form a liquid column which is separated from the two ports in the horizontally placed sample tube by virtue of solid-liquid interface tension between the liquid sample and the inner wall, so that light paths of the light beam in the sample tube are sequentially the light beam emitting end, an air column, the liquid column, the air column and the light beam receiving end while the absorption spectrum is collected. By adopting the structure and the light paths, the liquid sample, the light emitting end and a light absorbing end are isolated by the air columns, and therefore, a situation that the optical interface is polluted can not appear, and the volume of the liquid added can be used for adjusting the thickness of the absorbing layer according to the practical needs, so as to obtain an absorption spectrum signal with a high signal to noise ratio.
Description
Technical field
The utility model relates to the optical devices that are applied to the analytical chemistry field, is specially a kind of sample chamber be used in the liquid absorption spectral analysis with the collection liquid sample absorption spectrum, and relates to the method for using this sample chamber to gather absorption spectrum.
Background technology
Utilize the spectroscopic signal of material, especially the absorption spectrum signal, can realize fast qualitative and the quantitative test of material chemical composition and chemical constitution, is the important means in the analytical chemistry field.Want the absorption spectrum of collected specimens, need to build a kind of rational sample bearing structure to reduce as far as possible external environmental factor and interference that manually-operated was caused, thereby ensure that the signal gathered can objectively respond the feature chemical information of sample, and can be used as the foundation of qualitative analysis.Under the prerequisite of liquid with precise control absorption of sample layer thickness, measure the absorbance of fluid sample under specific wavelength, can realize the quantitative measurement to specific chemical composition or chemical constitution according to Beer-Lambert law.
The liquid absorption spectral signal harvester of current extensive employing comprises cuvette or fibre-optical probe two classes.Wherein, cuvette is the sample cell that adopts simple glass, light-passing plastic or quartz glass to make, and can be used for loading the fluid sample of certain volume; There is the fixing transparent surface of at least one pair of spacing, in order to control the fluid sample absorber thickness and to allow the light beam transmission of wavelength to be measured to cross fluid sample; Usually its light path is passed through successively: beam emissions end-air-transparent surface material-fluid sample-transparent surface material-air-light beam receiving end.Except the most widely used square cuvette, can allow in addition fluid sample continue to flow through the flow cell structure, the perforated plate construction that can allow a plurality of samples simultaneously to measure is also arranged, its light path and cuvette are basically identical.This type of sample cell all requires the transparent surface material to have good optical property, can not absorption be arranged to the light wave of wavelength to be measured, as can not adopt simple glass or light-passing plastic while gathering the ultra-violet absorption spectrum signal, and often need to adopt potassium bromide while gathering infrared absorption spectrum.There is following defect in the device of the collection liquid absorption spectrum signals such as cuvette: (1) is cleaned comparatively loaded down with trivial details, especially when fluid sample oil-containing or the stronger material of other adhesion; (2) easily cause the transparent surface wearing and tearing in cleaning process, cause measuring error; (3), for the ultra-violet absorption spectrum signal of collected specimens, need to adopt comparatively expensive quartz glass manufacture; (4) cuvette, flow cell or perforated plate construction all have larger volume, are placed in device interior, are difficult to realize the miniaturization of spectral instrument; (5) be difficult to realize the accurate sensitive temperature control to fluid sample because institute's test sample product unit volume heat-transfer area is little; (6) more difficult sealing, the effumability composition of fluid sample easily evaporates leakage.
Fibre-optical probe has one group of beam emissions end and receiving end of being arranged in juxtaposition usually, and the reflecting surface arranged on certain distance.When probe is immersed in fluid sample, the light beam of transmitting terminal is received by the receiving end of homonymy after reflection, and in this process twice by the liquid absorption layer between transmitting terminal and reflecting surface.The light path of fibre-optical probe is generally: transmitting terminal-absorption layer-reflecting surface-absorption layer-receiving end, or transmitting terminal-absorption layer-receiving end (no reflection events face structure).Although this structure has been cancelled the restriction to fluid sample carrying container optical property, and be conducive to realize the miniaturization of spectral instrument, but still have certain defect: (1) fluid sample directly contacts with transmitting terminal, receiving terminal or reflecting surface, is easy to pollute surface optical device; (2) the liquid absorption layer narrow space of fibre-optical probe, if polluted and be difficult to clean by the strong adhesive force composition in fluid sample; (3) volume of fluid sample must be enough large, to guarantee the submergence fibre-optical probe, is difficult to realize microdetermination; (4) insert the fluid sample operation for ease of probe, usually adopt open liquid sample container, easily cause the evaporation of volatile ingredient to be leaked; (5) be difficult for realizing greatly sensitive temperature control because of liquid sample volume.
In sum, all there is certain limitation in existing fluid sample absorption spectrum harvester, causes that absorption spectromtry equipment purchase and use cost are high, Operation and Maintenance is loaded down with trivial details and versatility is poor.For this reason, the utility model proposes a kind of without the micro liquid sample absorption spectrum harvester cleaned, operation is convenient, with low cost, so that realize the miniaturization of absorption spectrum instrument; This device also can be realized sensitive temperature control and the strict sealing of fluid sample in addition, and can in all band, gather the absorption spectrum signal, thus the universalization of reaching absorption spectrum instrument.
The utility model content
For existing fluid sample absorption spectrum harvester in use cost, safeguard the limitation aspect convenience and versatility, the utility model proposes a kind of sample chamber of new collection liquid absorption spectrum.
One side of the present utility model is a kind of collected specimens of the absorption spectrum for liquid absorption spectral analysis chamber, comprising: sample hose, and its tube chamber is for the load bearing fluid sample; The beam emissions end, for engaging with sample hose one port and along vertical importing light beam of sample hose; The light beam receiving end, for with the another port of sample hose, engaging and receive the described light beam that sees through fluid sample in described tube chamber, wherein, inwall material and the tube chamber cross sectional dimensions of sample hose are chosen as, fluid sample can rely on and inwall between solid-liquid interface tension force forms the fluid column separated with two-port in the sample hose of horizontal positioned, thereby make the light path of described light beam in sample hose when the collection absorption spectrum be followed successively by beam emissions end, gas column, fluid column, gas column and light beam receiving end.
Preferably, the sample hose of described sample chamber is that internal diameter is not more than 7mm and internal diameter is not less than the circular straighttube in 2mm.
Preferably, the length of the sample hose of described sample chamber is not more than 150mm.In specific embodiment, one of at least removably the engaging with the sample hose port of beam emissions end and light beam receiving end, to add from the sample hose port or to discharge fluid sample; And/or be provided with arm at the middle section position of sample hose, for import and the outlet of fluid sample.
In another specific embodiment, near its two-port place, arm is set respectively on sample hose, as the import of the gas that forms described gas column.
Owing to having adopted said structure and light path, between fluid sample and transmitting terminal, absorption edge, by gas column, isolated, therefore transmitting terminal or the contaminated situation of absorption edge optical interface can not occur, just without cleaning yet; In addition, without any solid dielectric, therefore cancelled the restriction to the solid dielectric optical property, more pollution-free and cleaning problem in light path.
In the situation that the sample hose internal diameter is certain, can inject volume by the liquid with precise control sample and control liquid column length, thereby can realize the accurate control of absorber thickness, for utilizing Beer-Lambert law, realize that the quantitative test of specific chemical composition or chemical constitution provides condition.And utilize this liquid absorption spectra sample chamber, also can regulate and control according to actual needs absorber thickness, to obtain the higher absorption spectrum signal of signal to noise ratio (S/N ratio).
The accompanying drawing explanation
The schematic diagram of the embodiment that Fig. 1 is the utility model sample chamber; And
The schematic diagram of another embodiment that Fig. 2 is the utility model sample chamber.
Embodiment
This liquid absorption spectra sample chamber comprises sample hose, light transmitting terminal, optical receiving end.Wherein the tube chamber of sample hose is interior for the load bearing fluid sample; The light transmitting terminal is positioned at sample hose one end, for importing light beam; Optical receiving end is positioned at the other end of sample hose, for receiving the light beam that sees through fluid sample.Between fluid sample and transmitting terminal and the sample tube chamber internal memory between fluid sample and receiving end at the protection gas column, for fluid partitioning sample and light transmitting terminal and optical receiving end.
Gas in the protection gas column is only arranged between fluid sample and transmitting terminal in this liquid absorption spectra sample chamber, and without other any solid dielectric; Gas in the protection gas column is only arranged between fluid sample and receiving end, and without other any solid dielectric.
Inwall material and the tube chamber cross sectional dimensions of sample hose are chosen as, fluid sample can rely on and inwall between solid-liquid interface tension force forms the fluid column separated with two-port in the sample hose of horizontal positioned, thereby make the light path of described light beam in sample hose when the collection absorption spectrum be followed successively by beam emissions end, gas column, fluid column, gas column and light beam receiving end.
Preferably, the circular straighttube that in this liquid absorption spectra sample chamber, sample hose is, and its material is that material is fluoro-containing plastic, also inside pipe wall applies metal, glass, pottery or the plastics of organic fluorine material or organosilicon material.When fluid sample injects, because there being larger solid-liquid interface tension force between liquid and inside pipe wall material, thus form one section stable fluid column under capillary action, thus formed the absorption layer of fluid sample.
In tube chamber, lumen diameter, inner-wall material and liquid property are mainly depended in the formation of independent fluid column.Those skilled in the art can select applicable formation to stablize the parameters such as the internal diameter of the sample hose of fluid column, material by testing simply based on testing liquid character.
Preferably, sample hose is circular straighttube.Its material can be fluoro-containing plastic, and also inside pipe wall applies metal, glass, pottery or the plastics of organic fluorine material or organosilicon material.When fluid sample injects, because there being larger solid-liquid interface tension force between liquid and inside pipe wall material, thus form one section stable fluid column under capillary action, thus formed the absorption layer of fluid sample.
Preferably, require the internal diameter of sample hose to be not more than 7mm, to prevent capillary inefficacy, cause fluid column to break through interfacial tension because of gravity and subside.Diffusion while considering beam propagation, and the convenience of liquid feeding operation, stablize under the prerequisite of fluid column in formation, can select large as far as possible internal diameter, and usually, internal diameter is chosen as and is not less than 5mm, preferably is not less than 2mm.
But, be not limited to above-mentioned sample hose material and size in the utility model, form independent stable sample fluid column as long as can meet in sample hose.Usually fluid column forms horizontal direction.
But, when measuring, sample hose is not limited to horizontal direction, can need to be also vertical or oblique according to measuring time space.Such as, in the time of the dress liquid-like, be sidewards, will can transfer vertical placement after one section shutoff of the mouth of pipe to and still keep fluid column stable.During non-horizontal positioned, it is stable that the pressure of protection gas column can maintain fluid column.
In addition, sample hose length is unsuitable excessive, with the light beam excess diffusion that prevents from sending from transmitting terminal, and causes absorption signal unstable.Preferred sample hose length is not more than 150mm.
Have again, for ease of the filling liquid sample, can arm be set at above-mentioned sample hose middle part, as injection or the floss hole of fluid sample; Also can branch road be set approaching sample hose two ends places, as the mouth that inputs or outputs of blanket gas.And, due to fluid sample and sample hose wall interfacial tension larger, fluid sample difficult with soak and sprawl.When promoting blanket gas pressure and making it to be greater than liquid injection port pressure, can make fluid sample discharge and noresidue.
When the Uv and visible light wave band of collection liquid sample, during the absorption spectrum of wavelength coverage between 190nm-800nm, the gas in the protection gas column can adopt the airborne a kind of of air, nitrogen or dehydration, decarbonation.Above-mentioned gas cheaply is easy to get, therefore be suitable for as blanket gas; And when surveyed absorption spectrum wavelength coverage when 800nm is above, the gas in described protection gas column is the airborne a kind of of nitrogen or dehydration, decarbonation.This is to absorb because water residual in air and carbon dioxide all have more by force in infrared range of spectrum, can disturb the collection of fluid sample absorption spectrum, therefore need to remove these chaff interferences.
In the situation that the sample hose internal diameter is certain, can inject volume by the liquid with precise control sample and control liquid column length, thereby can realize the accurate control of absorber thickness, for utilizing Beer-Lambert law, realize that the quantitative test of specific chemical composition or chemical constitution provides condition.And utilize this liquid absorption spectra sample chamber, also can regulate and control according to actual needs absorber thickness, to obtain the higher absorption spectrum signal of signal to noise ratio (S/N ratio).
The sample hose outside of this liquid absorption spectra sample chamber can arrange constant temperature jacket, with the temperature of fluid sample in control or stable sample chamber.Owing to having adopted small-bore pipe as sample chamber, therefore liquid sample volume is small, and the heat-transfer surface of unit volume fluid sample is larger, is conducive to balanced sensitive control fluid sample temperature.When gathering infrared absorption spectrum, if liquid receive the irradiation of infrared beam and heat up, can utilize this constant temperature jacket that unnecessary heat rapid moving is removed, thereby avoid the change of properties of fluid sample and the evaporation of volatile component.
The sample hose two ends of this liquid absorption spectra sample chamber are respectively beam emissions end and receiving end, with sample hose inwall close contact, form enclosed construction; In addition, the branch road that injects or discharge for fluid sample on sample hose, and the branch road of blanket gas input or discharge all can the valve sealing.This just makes the mensuration process complete under air-proof condition, has effectively prevented the evaporation of volatile component in the fluid sample.
Below, introduce primary structure feature and the advantage thereof of the sample chamber for the liquid absorption spectral analysis of the present utility model by preferred implementation.
The schematic diagram of the embodiment that Fig. 1 is the utility model sample chamber.
Shown in Fig. 1, sample chamber comprises: sample hose 2 and the beam emissions end 1 and the light beam receiving end 3 that engage respectively (for example inserted mode) with the sample hose both ends open.The tube chamber of sample hose 2 is interior for carrying the testing liquid sample; Beam emissions end 1 merges and vertically imports light beam along sample hose with sample hose one termination; Light beam receiving end 3 is for engaging with the other end of sample hose, and reception sees through the described light beam of fluid sample in described tube chamber.The tube chamber of sample hose 2 is set to, testing liquid can rely on and wall of the lumen between solid-liquid interface tension force form one section fluid column on the partial-length of tube chamber.Thereby the light path of described light beam in sample hose is followed successively by beam emissions end 1, protection gas column 5, fluid column, protection gas column 4 and light beam receiving end 3 in use.
At least one of beam emissions end 1 and light beam receiving end 3 can removably engage with the port of sample hose 2.While engaging with two ends, light beam transmitting terminal and receiving end can closed ports.
The using method of present embodiment sample chamber is described below.
Adopt following steps collection liquid absorption spectrum signal: (1), by unloaded sample hose horizontal positioned, utilizes microsyringe to inject from sample hose one end the fluid sample of setting volume, and makes formed fluid column be positioned at the sample hose middle part; (2) sample hose one end is inserted to the air of light beam receiving end to be retained in sealed tube, form the protection gas column; (3) the beam emissions end is inserted to the air retained in the sample hose other end sealed tube, form the protection gas column; (4) start light source acquisition of transmission light signal; (5) take off successively beam emissions end and sample hose, with ear washing bulb, blow out fluid sample.
Adopt this sample chamber, be applicable to gathering the absorption spectrum signal between wavelength coverage 190nm to 800nm.If adopt polytetrafluoroethylene capillary as sample hose, do disposable use because it is with low cost, therefore without cleaning operation.With traditional cuvette, compare, not only the fluid sample consumption is significantly saved, and without using comparatively expensive quartz glass (collection ultraviolet spectrum); The porous plate made from light-passing plastic is compared, and good airproof performance and the spectrum scope of application are wide; With fibre-optical probe, compare, the fluid sample consumption is few and without cleaning.In general, this liquid absorption spectra sample chamber has advantages of with low cost, easy maintenance, saving sample.And be easy to realize the miniaturization of spectral instrument because of compact conformation.
The schematic diagram of the another embodiment that Fig. 2 is the utility model sample chamber.
With in aforementioned embodiments similarly; sample chamber shown in Fig. 2 comprises sample hose 100, is located at beam emissions end 90 and the light beam receiving end 20 at sample hose two ends, and similarly in use the light paths in sample hose 100 be followed successively by beam emissions end 90, protection gas column 120, fluid column, protection gas column 120 and light beam receiving end 20.The selection of aforementioned sample tube material and size also is applicable to present embodiment.In the present embodiment, light wave transmitting terminal 90 and receiving end 20 are individually fixed in two-port the airtight port of sample hose 100.A branch road is respectively arranged as gas feed approaching sample hose 100 two ends places, and have a middle part arm to inject or passing away as fluid sample at sample hose 100 medium positions.
Sample chamber also can comprise the constant voltage gas circuit; it has a gas feed and two gas vents; its gas feed is connected with the purification source of the gas; two gas vents are connected respectively near the gas feed sample hose two-port with 80 through retaining valve 30, for the pressure of the protection gas column 120 that keeps sample hose or realize the unidirectional conveying of gas.
Also can comprise the purification source of the gas, it has micro-air compressor 40, absorption tower 50, air strainer 60 and reduction valve 70, absorb steam and the carbon dioxide of trace in air, be connected with the gas feed of constant voltage gas circuit through reduction valve 70, for the pure air of dehydration, decarbonation is provided.
Also can comprise constant temperature jacket 110, be coated on the sample hose outer wall, for stablizing the temperature of Quality control pipe.
Adopt the operation steps of this liquid absorption spectra sample chamber to be: (1) flushing line, refer to open the fluid sample valve, start air compressor so that Purge gas purge gas pipeline, sample hose and sample valve; (2) Liquid sample introduction, refer to close air compressor, and the liquid that utilizes syringe or pipettor will set volume injects sample hose through sample valve, then closes sample valve; (3) signals collecting, refer to after system constant temperature, starts light source acquisition of transmission light signal; (4) sample discharge, refer to open the fluid sample valve, starts air compressor to discharge fluid sample.
When the Uv and visible light wave band of collection liquid sample, during the absorption spectrum of wavelength coverage between 190nm-800nm, the gas in the protection gas column can adopt the airborne a kind of of air, nitrogen or dehydration, decarbonation.Above-mentioned gas cheaply is easy to get, therefore be suitable for as blanket gas; And when surveyed absorption spectrum wavelength coverage when 800nm is above, the gas in described protection gas column is the airborne a kind of of nitrogen or dehydration, decarbonation.This is to absorb because water residual in air and carbon dioxide all have more by force in infrared range of spectrum, can disturb the collection of fluid sample absorption spectrum, therefore need to remove these chaff interferences.
The sample hose arranged outside constant temperature jacket of this liquid absorption spectra sample chamber, with the temperature of fluid sample in control or stable sample chamber.Owing to having adopted kapillary as sample chamber, therefore liquid sample volume is small, and the heat-transfer surface of unit volume fluid sample is larger, is conducive to balanced sensitive control fluid sample temperature.When gathering infrared absorption spectrum, if liquid receive the irradiation of infrared beam and heat up, can utilize this constant temperature jacket that unnecessary heat rapid moving is removed, thereby avoid the change of properties of fluid sample and the evaporation of volatile component.
The sample hose two ends of this liquid absorption spectra sample chamber are respectively beam emissions end and receiving end, with sample hose inwall close contact, form enclosed construction; In addition, the branch road that injects or discharge for fluid sample on sample hose, and the branch road of blanket gas input or discharge all can the valve sealing.This just makes the mensuration process complete under air-proof condition, has effectively prevented the evaporation of volatile component in the fluid sample.Have again, for ease of the filling liquid sample, can arm be set at above-mentioned sample hose middle part, as injection or the floss hole of fluid sample; Also can branch road be set approaching sample hose two ends places, as the mouth that inputs or outputs of blanket gas.And, due to fluid sample and sample hose wall interfacial tension larger, fluid sample difficult with soak and sprawl.When promoting blanket gas pressure and making it to be greater than liquid injection port pressure, can make fluid sample discharge and noresidue.
Adopt this sample cell, but the absorption spectrum of collection liquid sample all band scope, and, because thering is constant temperature and sealing characteristics, can be used for the spectral signal monitoring (as reaction kinetics is measured) of long period.Sample hose is the capillary metal tube that inwall applies organic fluorine material, good heat-transfer and be difficult for being polluted by fluid sample; Adopt way flow constant voltage protection gas column, not only stopped the pollution of beam emissions end and receiving end, and it is easy to be reliable that fluid sample is changed, and to reappearance and the reliability that promotes determination data, provides guarantee.
In sum, there is following advantage the fluid sample absorption spectrum sample chamber that the utility model proposes: (1) when changing sample without cleaning, the optical surface wearing and tearing that simplify the operation and stop to cause because of cleaning; (2) unrestricted to the optical property of manufactured materials, without using clean-out system, significantly reduced manufacturing cost and use cost; (3) compact conformation, amount of samples is few, is easy to realize the miniaturization of spectroscopy equipment; (4) full spectral range is applicable, adopts hermetically-sealed construction and the sensitive temperature control of energy, is easy to realize the universalization of spectroscopy equipment.
Claims (6)
1. the collected specimens of the absorption spectrum for a liquid absorption spectral analysis chamber, is characterized in that, comprising:
Sample hose, its tube chamber is for the load bearing fluid sample;
The beam emissions end, for engaging with sample hose one port and along vertical importing light beam of sample hose;
The light beam receiving end, for the another port of sample hose, engaging and receive the described light beam that sees through fluid sample in described tube chamber,
Wherein, inwall material and the tube chamber cross sectional dimensions of sample hose are chosen as, fluid sample can rely on and inwall between solid-liquid interface tension force forms the fluid column separated with two-port in the sample hose of horizontal positioned, thereby make the light path of described light beam in sample hose when the collection absorption spectrum be followed successively by beam emissions end, gas column, fluid column, gas column and light beam receiving end.
2. sample chamber according to claim 1, is characterized in that, sample hose is that internal diameter is not more than the circular straighttube that 7mm and internal diameter are not less than 2mm.
3. sample chamber according to claim 1 and 2, is characterized in that, the length of sample hose is not more than 150mm.
4. sample chamber according to claim 1, is characterized in that, one of at least removably the engaging with the sample hose port of beam emissions end and light beam receiving end, to add from the sample hose port or to discharge fluid sample; And/or be provided with arm at the middle section position of sample hose, for import and the outlet of fluid sample.
5. sample chamber according to claim 1 and 2, is characterized in that, on sample hose, near its two-port place, arm is set respectively, as the import of the gas that forms described gas column.
6. sample chamber according to claim 1 and 2, is characterized in that, at sample hose arranged outside constant temperature jacket, with the temperature of fluid sample in control or stable sample chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320299090XU CN203337526U (en) | 2013-05-24 | 2013-05-24 | Sample room used for liquid absorption spectrum analysis |
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| CN201320299090XU CN203337526U (en) | 2013-05-24 | 2013-05-24 | Sample room used for liquid absorption spectrum analysis |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278450A (en) * | 2013-05-24 | 2013-09-04 | 徐姗 | Sample room for analyzing liquid absorption spectrum |
| CN105115897A (en) * | 2015-08-11 | 2015-12-02 | 中山大学 | Water body parameter measurement device and strong absorption liquid absorption coefficient measurement method |
| CN105866034A (en) * | 2016-03-30 | 2016-08-17 | 东华理工大学 | Light absorption information detection apparatus and method of liquid phase sample and gaseous ions thereof |
-
2013
- 2013-05-24 CN CN201320299090XU patent/CN203337526U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278450A (en) * | 2013-05-24 | 2013-09-04 | 徐姗 | Sample room for analyzing liquid absorption spectrum |
| CN103278450B (en) * | 2013-05-24 | 2017-12-12 | 徐姗 | Sample room for liquid absorption spectrum analysis |
| CN105115897A (en) * | 2015-08-11 | 2015-12-02 | 中山大学 | Water body parameter measurement device and strong absorption liquid absorption coefficient measurement method |
| CN105866034A (en) * | 2016-03-30 | 2016-08-17 | 东华理工大学 | Light absorption information detection apparatus and method of liquid phase sample and gaseous ions thereof |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131211 Effective date of abandoning: 20171212 |