CN106198413A - Linear amplification absorption spectrum based on Teflon absorption tube detection device and method - Google Patents
Linear amplification absorption spectrum based on Teflon absorption tube detection device and method Download PDFInfo
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- CN106198413A CN106198413A CN201610428814.4A CN201610428814A CN106198413A CN 106198413 A CN106198413 A CN 106198413A CN 201610428814 A CN201610428814 A CN 201610428814A CN 106198413 A CN106198413 A CN 106198413A
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- teflon
- absorption tube
- absorption
- light source
- tube
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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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
Abstract
nullThe present invention relates to a kind of linear amplification absorption spectrum based on Teflon absorption tube detection device and method，Solution to be measured is injected Teflon absorption tube by sample feeding pipe by it，The light radiation that light source sends imports in the Teflon absorption tube of circular arc from incident optical through certain angle，In Teflon absorption tube after Teflon absorption tube tube wall multiple reflections，After being output optical fiber capture thus detected by photoelectric sensor，Further by signal picker record，Computer is utilized to set up multivariate linear model，Calculate the concentration of solution to be measured，The present invention utilizes the character of Teflon absorption tube tube wall high reflectance，Achieve light radiation reflecting the most in order in Teflon absorption tube，Increase absorption light path，Improve the sensitivity of absorption spectrometry detection，Result is accurately and reliably、Favorable reproducibility.
Description
Technical field
The invention belongs to technical field of spectral detection, be specifically related to a kind of linear amplification based on Teflon absorption tube and absorb
Spectrum detection device and method.
Background technology
Absorption spectrum detection technique is the analysis method set up the selective absorbing of light based on material, is changing
The fields such as, food safety, clinical analysis and environment measuring have played important function.Improve the sensitive of absorption spectrum detection technique
Degree has become the focus of research.Due to absorbance A and the absorption light path b positive correlation of solution, therefore can be thick by increasing liquid layer
Spend and increase absorption light path.Increase absorption light path at present and have two ways: one is to increase absolute light path, i.e. selects the ratio of long light path
Color ware, as 1cm changes into 2cm, this change is easily limited by instrument space；Two is to increase relative optical path, utilizes high reflectance
Minute surface builds optical resonator, increases effective light path by the light repeatedly direct reflection in resonator cavity, or at spheroid intracavity
Wall coating diffuse-reflective material, utilizes light to increase effective light path in the most random diffuse-reflectance of spheroid intracavity, or throws in solution
Enter certain material, such as polystyrene microsphere, utilize the polystyrene microsphere Multiple Scattering to light, and then realize increasing light relatively
Journey.
But, above-mentioned detection technique yet suffers from some problems: as built optical resonator and spheroid chamber cost height, knot
Structure is complicated, the amplification of optical signalling presents the feature of non-linear amplification, is unfavorable for analyzing application.In addition spheroid chamber is only applicable to
To gas detecting, still it is not used to liquid detecting；Utilize polystyrene microsphere that the Multiple Scattering of light is increased relative optical path to amplify
Degree is extremely limited, and detection sensitivity is the most relatively low.
Summary of the invention
In order to overcome the deficiency existing for above-mentioned prior art, the invention provides a kind of selection and there is high reflectance inwall
Teflon absorption tube as absorption cell, reach the mesh of repeatedly reflection in order by changing the degree of crook of Teflon absorption tube
, increase relative optical path, it is achieved linear amplification absorption spectrum improves the based on Teflon absorption tube of detection sensitivity linearly to be put
Big absorbing light spectrum detection device.
Present invention also offers a kind of above-mentioned linear amplification absorbing light spectrum detection device based on Teflon absorption tube real
The method of existing linear amplification absorption spectrum detection, it is highly sensitive, testing result is accurate.
The technical solution adopted in the present invention is:
This linear amplification absorbing light spectrum detection device based on Teflon absorption tube, including light source and relative with light source,
Send the photoelectric sensor of light radiation for receiving light source, the outfan of photoelectric sensor is by wire with signal picker even
Connecing, signal picker is connected by data wire with computer；It is connected by optical fiber between light source with photoelectric sensor that have can be to light source
Optical signal there is the Teflon absorption tube of repeatedly in order total reflection, the two ends sidewall of Teflon absorption tube is machined with respectively with
The inlet of injector connection and the leakage fluid dram that connects with discharging tube；An adjustable electric it is connected in series with between light source and power supply
Resistance.
Above-mentioned Teflon absorption tube integrally bending is circular arc, makes light radiation be totally reflected formation in pipe in order corrugated instead
Rays footpath, the central angle of Teflon absorption tube is between 10～60 °.
The inner surface of above-mentioned Teflon absorption tube is smooth, and reflectance is higher than 99%.
A kind of utilize what above-mentioned linear amplification absorbing light spectrum detection device based on Teflon absorption tube realized linearly to put
Big absorption spectrum detection method, it is to comprise the steps of:
(1) power-on, regulating its voltage is 5.0V, disconnects the subcircuits being connected with light source, measures and obtains the dark of device
Voltage Ud；
(2) connection is connected with the subcircuits of light source, with injector topping-up in Teflon absorption tube, opens electricity
Source, regulating its voltage is 5.0V, and the light radiation that light source sends enters in Teflon absorption tube, many through the tube wall of Teflon absorption tube
Secondary orderly total reflection also forms corrugated light path in Teflon absorption tube, and a part is filled in the steaming in Teflon absorption tube
Distilled water absorbs, and another part, through fiber-optic transfer to photoelectric sensor, is transferred to computer after signal picker is changed, obtains sky
White magnitude of voltage Ub；
(3) connection is connected with the subcircuits of light source, notes the standard of a series of concentration known in Teflon absorption tube respectively
Solution, power-on, regulating its voltage is 5.0V, according to the operation of step (2), obtains the magnitude of voltage of series of standards solution
Uci, i is the number of standard solution, according to the computing formula of absorbance:
Obtain the absorbance A of series standard solutioni, with the concentration of standard solution for X-axis and corresponding absorbance AiFor Y-axis,
Draw concentration-absorbance standard curve；
(4) connection is connected with the subcircuits of light source, fills solution to be measured, power-on, regulation in Teflon absorption tube
Its voltage is 5.0V, according to the operation of step (2), obtains magnitude of voltage U to be measuredx；
(5) the absorbance formula of step (3) and the magnitude of voltage U to be measured of step (4) are utilizedx, calculate the suction of solution to be measured
Luminosity Ax, by the absorbance A of solution to be measuredxSubstitute in the concentration-absorbance standard curve of step (3), thus obtain solution to be measured
Concentration.
The light radiation that above-mentioned light source sends enters Teflon suction along the direction of Teflon absorption tube mouth of pipe centerline parallel
In closed tube.
Linear amplification absorption spectrum based on the Teflon absorption tube detection device and method of the present invention, selects Teflon to inhale
Closed tube, as absorption cell, utilizes the character of Teflon absorption tube tube wall high reflectance, by changing the bending of Teflon absorption tube
Degree reaches the purpose that light radiation is totally reflected the most in order, forms corrugated path, increase light relatively in Teflon absorption tube
Journey, is effectively increased detection sensitivity, adds certainty of measurement, and recycling multiple linear regression equations calculates the dense of solution
Degree, thus realize the detection to colored solution concentration, the present invention can use common LED light source, utilizes Teflon to absorb
Pipe total reflection realizes linear amplification, reduces cost, and overall volume is little, easy to be easy to carry about with one, and it is simple and efficient to detect process, knot
The most accurately and reliably, favorable reproducibility.
Accompanying drawing explanation
Fig. 1 is the linear amplification absorption spectrum structure of the detecting device schematic diagram based on Teflon absorption tube of embodiment 1.
Detailed description of the invention
In conjunction with drawings and Examples, technical scheme is further described.
Embodiment 1
As shown in Figure 1, the linear amplification absorbing light spectrum detection device based on Teflon absorption tube of the present embodiment is by electricity
Source 10, light source 1, incident optical 2, injector 3, Teflon absorption tube 4, discharging tube 5, output optical fibre 6, photoelectric sensor 7, signal
Harvester 8, computer 9 and adjustable resistance 11 combination are constituted.
The power supply 10 of the present embodiment, as a power supply output system, controls and regulates to make energising current potential be maintained within setting
On fixed controlling potential, it is connected with light source 1 by wire, is also connected in series with an adjustable electric between light source 1 and power supply
Resistance 11, can be by regulating the size adjustment electric current of adjustable resistance 11, it is ensured that electric current will not be excessive in order to avoid burning light source 1.Light source 1
Be connected by the optical receiving end of incident optical 2 with Teflon absorption tube 4, and by optical signal by incident optical 2 conduct entrance can
Holding in the Teflon absorption tube 4 of absorbing liquid, optical signal is through the rear section of the total reflection the most in order quilt of Teflon absorption tube 4 inwall
Absorbing liquid absorbs, and remainder conducts output through the output optical fibre 6 being arranged on the light output end of Teflon absorption tube 4, exports light
The other end of fine 6 is connected with photoelectric sensor 7, and this photoelectric sensor 7 is connected with signal picker 8 by wire, adopts through signal
The optical signal gathered is changed into digital signal by storage 8, and the computer 9 being transferred to be attached thereto through data wire is further
Process, i.e. photoelectric sensor 7 is connected with computer 9 through signal picker 8.
Teflon absorption tube 4 bore of the present embodiment is 2mm, and external diameter is 4mm, its inner wall smooth, and reflectance is up to
99.5%, its integrally bending becomes arc-shaped, and central angle is 40 °, makes light radiation can be totally reflected the most in order in pipe, forms ripple
Stricture of vagina shape reflection path.
With above-mentioned linear amplification absorbing light spectrum detection device on-line checking C.I. 42590 solution based on Teflon absorption tube
The method of concentration comprises the steps of:
1, the required solution of preparation detection
Solution needed for preparation detection before testing: weigh 0.0609g C.I. 42590 and be dissolved in 100mL water, obtain 1 ×
10-3The C.I. 42590 solution of mol/L, obtains the C.I. 42590 solution of low concentration and extremely low concentration after dilution.
2, by the concentration of the detection method detection C.I. 42590 solution of the present invention, specifically comprise the steps of:
(1) Teflon absorption tube does not bend fixing, after doing lucifuge process, and the voltage of regulation power supply 10, Control of Voltage
Below 5.0V, disconnects the subcircuits being connected with light source, and three dark voltages of parallel assay are averaged, and obtain the dark voltage of device
Ud；
(2) connection is connected with the subcircuits of light source, opens injector 3, topping-up in Teflon absorption tube 4, opens
Opening power supply 10, arranging voltage is 5.0V, and the light that light source sends can enter along the direction of Teflon absorption tube 4 mouth of pipe centerline parallel
Enter the interior tube wall through Teflon absorption tube 4 of Teflon absorption tube 4 be totally reflected the most in order and in Teflon absorption tube 4, form ripple
Stricture of vagina shape light path, distilled water that a part is filled in Teflon absorption tube 4 absorbs, another part through fiber-optic transfer to photoelectric transfer
Sensor 7, through signal picker 8, is transferred to computer 9 after signal picker 8 is changed and processes further, obtains compareing water sample
Blank magnitude of voltage Ub；
(3) connection is connected with the subcircuits of light source 1, and in Teflon absorption tube 4, successively note concentration is respectively 0.01 μm ol/
L、0.02μmol/L、0.05μmol/L、0.1μmol/L、0.2μmol/L、0.5μmol/L、0.8μmol/L、1.0μmol/L、2.0
μm ol/L, 5.0 μm ol/L, the C.I. 42590 standard solution of 8.0 μm ol/L, power-on 10, regulating its voltage is 5.0V, and light source is sent out
The light radiation that goes out enters Teflon absorption tube 4, be totally reflected the most in order and in Teflon absorption through the tube wall of Teflon absorption tube 4
Forming corrugated light path in pipe 4, the C.I. 42590 standard solution that a part is filled in Teflon absorption tube 4 absorbs, another portion
Lease making fiber-optic transfer, to photoelectric sensor 7, is transferred to computer 9 after signal picker 8 is changed, respectively obtains each C.I. 42590 mark
The magnitude of voltage U that quasi-solution is correspondingci, i=11, for the number of standard solution, according to the computing formula of absorbance:
Obtain the absorbance A of this series standard solutioni, with the concentration of standard solution for X-axis and corresponding absorbance AiFor Y
Axle, draws concentration-absorbance standard curve；
(4) connection is connected with the subcircuits of light source 1, fills C.I. 42590 solution to be measured in Teflon absorption tube 4, opens electricity
Source 10, regulating its voltage is 5.0V, according to the operation of step (2), obtains the magnitude of voltage U to be measured that C.I. 42590 solution to be measured is correspondingx；
(5) the absorbance formula of step (3) and the magnitude of voltage U to be measured of step (4) are utilizedx, calculate C.I. 42590 to be measured molten
The absorbance A of liquidx, by the absorbance A of C.I. 42590 solution to be measuredxSubstitute in the concentration-absorbance standard curve of step (3), thus
Obtain the concentration of C.I. 42590 solution to be measured.
Teflon absorption tube 4 integrally bending in above-described embodiment is circular arc, and central angle can 10～60 ° it
Between be adjusted flexibly, make light radiation orderly corrugated reflection path of total reflection formation in pipe, curved when Teflon absorption tube 4
During Qu Chengdu change, need the resistance size of accommodation adjustable resistance, it is ensured that electric current will not be excessive, in order to avoid burning light source 1.
Above example is only in order to illustrate technical scheme, rather than is limited；Although with reference to aforementioned reality
Execute example the present invention has been described in detail, for the person of ordinary skill of the art, still can be to aforementioned enforcement
Technical scheme described in example is modified, or wherein portion of techniques feature is carried out equivalent.
Claims (5)
1. a linear amplification absorbing light spectrum detection device based on Teflon absorption tube, including light source (1), and and light source
(1) relatively, being used for receiving light source (1) and send the photoelectric sensor (7) of light radiation, the outfan of photoelectric sensor (7) is by leading
Line is connected with signal picker (8), and signal picker (8) is connected by data wire with computer (9)；It is characterized in that: described
It is connected by optical fiber between light source (1) with photoelectric sensor (7) to have and the optical signal of light source can be occurred repeatedly total reflection in order
Teflon absorption tube (4), the two ends sidewall of Teflon absorption tube (4) is machined with inlet respectively that connect with injector (3)
And the leakage fluid dram connected with discharging tube (5)；An adjustable resistance (11) it is connected in series with between light source (1) and power supply (10).
Linear amplification absorbing light spectrum detection device based on Teflon absorption tube the most according to claim 1, its feature exists
In: described Teflon absorption tube (4) integrally bending is circular arc, makes light radiation corrugated reflection of total reflection formation in order in pipe
Path, the central angle of Teflon absorption tube (4) is between 10～60 °.
Linear amplification absorbing light spectrum detection device based on Teflon absorption tube the most according to claim 1, its feature exists
In: the inner surface of described Teflon absorption tube (4) is smooth, and reflectance is higher than 99%.
4. the linear amplification absorbing light spectrum detection device based on Teflon absorption tube that a kind utilizes described in claim 1 realizes
Linear amplification absorption spectrum detection method, it is characterised in that comprise the steps of:
(1) power-on (10), regulating its voltage is 5.0V, disconnects the subcircuits being connected with light source (1), measures and obtains device
Dark voltage Ud；
(2) connection is connected with the subcircuits of light source (1), with injector (3) topping-up in Teflon absorption tube (4), opens
Opening power supply (10), regulating its voltage is 5.0V, and the light radiation that light source (1) sends enters in Teflon absorption tube (4), through Teflon
The tube wall of absorption tube (4) is totally reflected the most in order and forms corrugated light path in Teflon absorption tube (4), and a part is filled
Distilled water in Teflon absorption tube (4) absorbs, and another part is through fiber-optic transfer to photoelectric sensor (7), through signals collecting
It is transferred to computer (9) after device (8) conversion, obtains blank magnitude of voltage Ub；
(3) connection is connected with the subcircuits of light source (1), notes the mark of a series of concentration known in Teflon absorption tube (4) respectively
Quasi-solution, power-on (10), regulating its voltage is 5.0V, according to the operation of step (2), obtains the electricity of series of standards solution
Pressure value Uci, i is the number of standard solution, according to the computing formula of absorbance:
Obtain the absorbance A of series standard solutioni, with the concentration of standard solution for X-axis and corresponding absorbance AiFor Y-axis, draw
Concentration-absorbance standard curve；
(4) connection is connected with the subcircuits of light source (1), fills solution to be measured, power-on in Teflon absorption tube (4)
(10), regulating its voltage is 5.0V, according to the operation of step (2), obtains magnitude of voltage U to be measuredx；
(5) the absorbance formula of step (3) and the magnitude of voltage U to be measured of step (4) are utilizedx, calculate the absorbance of solution to be measured
Ax, by the absorbance A of solution to be measuredxSubstitute in the concentration-absorbance standard curve of step (3), thus obtain the dense of solution to be measured
Degree.
Method the most according to claim 4, it is characterised in that: the light radiation that described light source (1) sends is inhaled along Teflon
The direction of closed tube (4) mouth of pipe centerline parallel enters in Teflon absorption tube (4).
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| CN201610428814.4A CN106198413A (en) | 2016-06-16 | 2016-06-16 | Linear amplification absorption spectrum based on Teflon absorption tube detection device and method |
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| CN201610428814.4A CN106198413A (en) | 2016-06-16 | 2016-06-16 | Linear amplification absorption spectrum based on Teflon absorption tube detection device and method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2430682Y (en) * | 1999-11-18 | 2001-05-16 | 金钦汉 | High sensitive photometer |
| CN101701905A (en) * | 2009-11-03 | 2010-05-05 | 中国科学院南海海洋研究所 | Wide-aperture long path sample pool |
| CN101806726A (en) * | 2010-03-29 | 2010-08-18 | 浙江大学 | Double-wavelength absorbance detection device for analyzing trace liquid |
| CN101839849A (en) * | 2010-03-29 | 2010-09-22 | 王一鸣 | Amylose detector and method for detecting amylose |
| CN102486456A (en) * | 2010-12-03 | 2012-06-06 | 鲍元进 | Liquid core waveguide detection device |
| CN103760107A (en) * | 2013-11-06 | 2014-04-30 | 安徽皖仪科技股份有限公司 | Liquid core waveguide flow-through cell for UV spectrophotometric detector |
-
2016
- 2016-06-16 CN CN201610428814.4A patent/CN106198413A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2430682Y (en) * | 1999-11-18 | 2001-05-16 | 金钦汉 | High sensitive photometer |
| CN101701905A (en) * | 2009-11-03 | 2010-05-05 | 中国科学院南海海洋研究所 | Wide-aperture long path sample pool |
| CN101806726A (en) * | 2010-03-29 | 2010-08-18 | 浙江大学 | Double-wavelength absorbance detection device for analyzing trace liquid |
| CN101839849A (en) * | 2010-03-29 | 2010-09-22 | 王一鸣 | Amylose detector and method for detecting amylose |
| CN102486456A (en) * | 2010-12-03 | 2012-06-06 | 鲍元进 | Liquid core waveguide detection device |
| CN103760107A (en) * | 2013-11-06 | 2014-04-30 | 安徽皖仪科技股份有限公司 | Liquid core waveguide flow-through cell for UV spectrophotometric detector |
Non-Patent Citations (3)
| Title |
|---|
| 孙兆华 等: ""Teflon AF 液芯波导的应用研究进展"", 《光谱学与光谱分析》 * |
| 曾健华 等: ""氯离子在线检测仪的研制"", 《分析仪器》 * |
| 杜文斌 等: ""基于液芯波导原理的微流控芯片长光程光度检测系统"", 《高等学校化学学报》 * |
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