CN202649105U - Dual-light path light splitting detection system - Google Patents
Dual-light path light splitting detection system Download PDFInfo
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- CN202649105U CN202649105U CN 201220296898 CN201220296898U CN202649105U CN 202649105 U CN202649105 U CN 202649105U CN 201220296898 CN201220296898 CN 201220296898 CN 201220296898 U CN201220296898 U CN 201220296898U CN 202649105 U CN202649105 U CN 202649105U
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Abstract
The utility model discloses a dual-light path light splitting detection system. The dual-light path light splitting detecting system comprises an LED (Light Emitting Diode) light source, a colorimetric tank and receivers arranged behind the colorimetric tank, wherein a light transmitting bundle is arranged between the LED light source and the colorimetric tank and comprises a first light quantity outlet and a second light quantity outlet, and the light transmitted by the first light quantity outlet reaches a first receiver by solution in the colorimetric tank; and the light transmitted by the second light quantity outlet reaches a second receiver by the part of the colorimetric tank not containing solution. The dual-light path light splitting detection system disclosed by the utility model has the advantages that the light sent by the same light source is split into two bundles by the light transmitting bundle made specially, one bundle of light passes through a dissolving reaction area of the colorimetric tank to reach the first receiver, the other bundle of light passes through the blank part of the colorimetric tank to reach the second receiver, the data signals are collected synchronously, and the error caused by the wall of a cuvette is further removed, so that the detection result is more accurate and effective.
Description
Technical field
The utility model relates to field of spectral analysis technology, especially relates to a kind of spectrophotometer, particularly a kind of double light path spectral detection system.
Background technology
Spectrophotometric method is by measuring measured matter Optical Absorption degree in certain wave strong point or certain wavelength coverage, this material being carried out the method for qualitative and quantitative analysis.
In spectrophotometer, when different wave length is shone certain density sample solution continuously, just can obtain the corresponding absorption intensity of unusual wavelength.As take wavelength (λ) as horizontal ordinate, absorption intensity (A) is ordinate, just can draw the absorption spectrum curve of this material.Utilize this curve to carry out qualitative, the quantitative analytical approach of material, be called spectrophotometric method, be also referred to as absorption spectroscopy.Method with ultraviolet source mensuration colourless substance is called ultraviolet spectrophotometry; Method with visible light source mensuration coloring matter is called the visible light photometry.They are the same with colourimetry, all take the Beer-Lambert law as the basis.Above-mentioned ultraviolet region and visible region are commonly used.But the district that should use up of spectrophotometric method comprises ultraviolet region, visible region, infrared light district.
According to lambert (Lambert)-Bill (Beer) law: A=abc, when a beam intensity be the solution of monochromatic light vertical irradiation something of I0 after because a part of light absorbed by system, so the transmission light intensity is down to I, then the transmittance T of solution is:
A is absorbance in the formula, and b is solution layer thickness (cm), and c is the concentration (g/dm^3) of solution, and a is absorptivity.Wherein absorptivity is relevant with the factors such as person's character, temperature and wavelength of solution.Other components in the solution (such as solvent etc.) can be deducted with blank solution Optical Absorption.
By following formula as can be known, when fixed solution layer thickness l and absorptivity, the concentration of absorbance A and solution is linear.When quantitative test, at first need to measure solution to the absorbing state (absorption spectrum) of different wavelengths of light, therefrom determine maximum absorption wavelength, then take the light of this wavelength as light source, measure the absorbance A of a series of concentration known c solution, make A ~ c working curve.When analyzing unknown solution, according to the absorbance A of measuring, look into working curve and can determine corresponding concentration.This is the ultimate principle of metric measurement concentration.
The detecting instrument of existing employing spectrophotometric method, mostly adopt single light source list receiving light path, the advantage of this kind equipment is: principle is clear, light path is succinct, is classical pipeline analytic system, but this system to the inhibition of temperature drift, power-supply fluctuation equal error control ability a little less than.
Summary of the invention
Technical problem to be solved in the utility model is to overcome existing spectrophotometric instrument and has temperature drift, power-supply fluctuation equal error defective, and a kind of double light path spectral detection system that can overcome temperature drift, power-supply fluctuation equal error is provided.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of double light path spectral detection system, comprise led light source, colorimetric pool and place receiver after the described colorimetric pool, it is characterized in that, be provided with a light guide bundles between described led light source and colorimetric pool, described light guide bundles comprises the outlet of the first luminous flux and the outlet of the second luminous flux, and the light of described the first luminous flux outlet conduction arrives the first receiver through the solution in the colorimetric pool; The light of described the second luminous flux outlet conduction arrives the second receiver through the colorimetric pool without solution.
Preferably, described light guide bundles is glass light guide bundles or the quartzy light guide bundles of saturating ultraviolet.
Preferably, described light guide bundles is evenly distributed to described the first luminous flux outlet and the outlet of the second luminous flux with the luminous flux of import.
The advantage of double light path spectral detection system of the present utility model is: the light that same light source sends, be divided into two bundles by special light guide bundles, a branch ofly arrive the first receiver by colorimetric pool solubilizing reaction district, another bundle reaches the second receiver by the colorimetric pool blank parts, the data-signal synchronous acquisition, can further remove the error that the cuvette wall brings, make more accurate and effective of testing result.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is the utility model double light path spectral detection system one structural representation.
Wherein, 1 is led light source, and 2 is the first receiver, and 3 is the second receiver, and 4 is colorimetric pool, and 5 is the solution in the colorimetric pool, and 6 is light guide bundles, and 61 is the outlet of the first luminous flux, and 62 is the outlet of the second luminous flux.
Embodiment
Special light guide bundles one of the present utility model advances scene 2, and the luminous flux of import is evenly distributed to two outlets, and along with the variation of import luminous flux, outlet light flux variations degree is consistent.Different according to detection light source place wavelength, can select glass and the quartzy material of saturating ultraviolet.The light guide bundles that the utility model uses shines Science and Technology Ltd. available from the Nanjing letter.
Two luminous flux outlets of light guide bundles, light flux variations is consistent.One light beam I
1
By reaction reagent as measurement light source I
1-1
, another light beam I
2
Do not pass through as a setting light value I of reagent
2-2
And reaction finishes, calculate solution reaction absorbance be A=LOG (I
1-1
/ I
2-2
).Because I
1
=I
2
So,, when temperature drift or power supply shakiness cause light source fluctuation, I
1-1
With I
2-2
Change in proportion, so absorbance A is constant.Thereby reach the impact that suppresses temperature drift and power-supply fluctuation.
Embodiment: double light path spectral detection system structural representation of the present utility model as shown in Figure 1, a kind of double light path spectral detection system, comprise led light source 1, colorimetric pool 4 and place receiver after the described colorimetric pool 4, between described led light source 1 and colorimetric pool 4, be provided with a light guide bundles 6, described light guide bundles 6 comprises the first luminous flux outlet the 61 and second luminous flux outlet 62, and the light of described the first luminous flux outlet 61 conduction arrives the first receiver 2 through the solution 5 in the colorimetric pool 4; The light of described the second luminous flux outlet conduction arrives the second receiver 3 through the colorimetric pool 4 without solution.
On company's existing CODcr on-line monitoring instrument, by changing original one-in-and-one-out light guide bundles, become into scene 2, then add receiver, mode and the computing method of change software reading out data, thus realize the more stable analysis to measure of instrument.
Certainly, above-described embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow people can understand content of the present invention and implements according to this, can not limit protection scope of the present invention with this.The all Spirit Essence of main technical schemes is done according to the present invention equivalent transformation or modification all should be encompassed within protection scope of the present invention.
Claims (3)
1. double light path spectral detection system, comprise led light source, colorimetric pool and place receiver after the described colorimetric pool, it is characterized in that, between described led light source and colorimetric pool, be provided with a light guide bundles, described light guide bundles comprises the outlet of the first luminous flux and the outlet of the second luminous flux, and the light of described the first luminous flux outlet conduction arrives the first receiver through the solution in the colorimetric pool; The light of described the second luminous flux outlet conduction arrives the second receiver through the colorimetric pool without solution.
2. a kind of double light path spectral detection system according to claim 1 is characterized in that, described light guide bundles is glass light guide bundles or the quartzy light guide bundles of saturating ultraviolet.
3. a kind of double light path spectral detection system according to claim 1 is characterized in that, described light guide bundles is evenly distributed to described the first luminous flux outlet and the outlet of the second luminous flux with the luminous flux of import.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220296898 CN202649105U (en) | 2012-06-25 | 2012-06-25 | Dual-light path light splitting detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220296898 CN202649105U (en) | 2012-06-25 | 2012-06-25 | Dual-light path light splitting detection system |
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| Publication Number | Publication Date |
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| CN202649105U true CN202649105U (en) | 2013-01-02 |
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| CN 201220296898 Expired - Lifetime CN202649105U (en) | 2012-06-25 | 2012-06-25 | Dual-light path light splitting detection system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064095A (en) * | 2017-06-02 | 2017-08-18 | 安徽大学 | Dual wavelength quantum dot fluorescence probe furans phenolic ketone detection means and its detection method |
| CN109100314A (en) * | 2018-08-03 | 2018-12-28 | 江西怡杉科技有限公司 | A kind of spectrophotometric detecting method and device |
-
2012
- 2012-06-25 CN CN 201220296898 patent/CN202649105U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064095A (en) * | 2017-06-02 | 2017-08-18 | 安徽大学 | Dual wavelength quantum dot fluorescence probe furans phenolic ketone detection means and its detection method |
| CN109100314A (en) * | 2018-08-03 | 2018-12-28 | 江西怡杉科技有限公司 | A kind of spectrophotometric detecting method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SUZHOU KETE ENVIRONMENTAL PROTECTION CO., LTD. Free format text: FORMER NAME: SUZHOU KETE ENVIRONMENTAL PROTECTION EQUIPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 215156 Jiangsu city of Suzhou province Wuzhong District Xu Kou Zhen Mao Peng Lu, No. 517 Patentee after: SUZHOU KETE ENVIRONMENTAL PROTECTION Co.,Ltd. Address before: 215156 Jiangsu city of Suzhou province Wuzhong District Xu Kou Zhen Mao Peng Lu, No. 517 Patentee before: Suzhou Kete Environmental Protection Equipment Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |
|
| CX01 | Expiry of patent term |