CN104897629A - Method for in-situ detection of migration quantity of fluorescent whitening agent - Google Patents
Method for in-situ detection of migration quantity of fluorescent whitening agent Download PDFInfo
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- CN104897629A CN104897629A CN201510250249.2A CN201510250249A CN104897629A CN 104897629 A CN104897629 A CN 104897629A CN 201510250249 A CN201510250249 A CN 201510250249A CN 104897629 A CN104897629 A CN 104897629A
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Abstract
The invention discloses a method for in-situ detection of the migration quantity of a fluorescent whitening agent; a fluorescence content value A of a to-be-measured sample which is not used is measured, a fluorescence content value B is measured again after the to-be-measured sample is used, and the migration quantity of the fluorescent whitening agent=(A-B)/A*100%. The method comprises that firstly, the concentration of the fluorescent whitening agent at a certain part of the to-be-measured sample is detected when the to-be-measured sample does not make contact with a human body, then the concentration of the fluorescent whitening agent at the part is detected again after the to-be-measured sample makes contact with the human body, the concentrations of the fluorescent whitening agent before and after contact with the human body are compared, and thus the migration quantity of the fluorescent whitening agent can be obtained; the detection method can most truly and directly reflect the migration quantity of the fluorescent whitening agent. The method is fast in detection speed, and can provide a reliable detection method for on-site detection of the migration quantity of the fluorescent whitening agent in the sample.
Description
Technical field
The present invention relates to a kind of detection method, particularly relate to a kind of in-situ detection method of fluorescer migration amount.
Background technology
Fluorescer is commonly called as white dye, is a kind of fluorescent dye, belongs to a kind of organic compound of complexity.Its characteristic can excite to absorb incident ultraviolet light generation fluorescence, namely excite after absorbing ultraviolet light (wavelength coverage is about 360nm-380nm) and produce the visible ray of wavelength in 400nm-600nm scope, thus can compensate undesired micro-yellow in matrix, thus article color visually seem more in vain, brighter, more bright-coloured.Due to this characteristic, water miscible fluorescer is widely used in food, paper, coating, washing powder and bafta etc., and water-insoluble fluorescer is then applied to the product such as chemical fibre, plastics.
Clinical medicine experiment proves, fluorescer enters human body, and be not easy to decompose, toxicity can be accumulated in liver or other major organs, becomes potential carcinogenic factor; If skin or surface mucosa have wound, the protein bound of fluorescer meeting and wound, can hinder the healing of wound.Can with human contact and the article being loaded with fluorescer mainly contain the product such as face tissue, clothing, cigarette, packaging for foodstuff, filter tip containing fluorescer, fluorescer meeting and skin contact under the soaking into of water or sweat, be absorbed by the body; Or and oral contact, eat in body, very important harm is existed to health.The mensuration of current fluorescer is all detect for fluorescer residual quantity, but in the actual service condition of above-mentioned article, the most influential principal element of health is not lain in the content of fluorescer, but the migration amount of these products and human oral cavity or skin fluorescer under the infiltration of sweat.
Have corresponding report to the detection method of the transportable fluorescer of paper at present, these methods comprise: 80 DEG C of water-bath extractions, and 40 DEG C of water-bath concussion extractions etc., extraction solvent is distilled water, ethanolic solution etc.Also have in the fluorescer examination criteria GB/T27741-2011 that China formulates and detect fluorescer and transfer to method in extract.Although this method testing result is accurate, detection time is long, and operational means is violent, easily causes fluorescer excessively to separate out.Even like this, this method is also the indirect detection to fluorescent brightener levels, directly can not detect the fluorescent brightener levels of migration.
Therefore, be badly in need of at present a kind of method can quick and precisely, ground easy to carry is on-the-spot carries out quantitatively detecting whenever and wherever possible to fluorescer migration amount.
Summary of the invention
Fundamental purpose of the present invention is the technological deficiency for existing in prior art, a kind of in-situ detection method that quantitatively can detect fluorescer migration amount in sample is quickly and accurately provided, first measure fluorescence content value A on original testing sample, testing sample measures fluorescence content value B, fluorescer migration amount=(A-B)/A × 100% after using again.
Fluorescence content value in situ detection instrument records; Described in situ detection instrument comprises casing, and described casing upper surface is provided with display screen, some buttons and detection module, is equiped with the microprocessor control circuit be electrically connected with described display screen, button and detection module in described casing.
Described detection module is an original position pond, and described original position pond comprises the detection main body and scraps of paper carrier module all made with the aluminum material after black plastic or blackening process.
Described detection main body comprises the original position pond matrix of an inverted round table shape, in the side of described original position pond matrix round platform symmetrical be provided with two be respectively used to splendid attire light source module and information module and extend to the cylindrical hole of end face; Be provided with one at the end face of described original position pond matrix and be used for the cylindrical chamber that the projection of scraps of paper carrier module described in splendid attire is uncovered, diameter is less than described original position pond matrix end face; Described through hole and chamber communicate.
The outside surface of described original position pond matrix end face chamber is provided with external thread and is fixed on casing by original position pond matrix by a band female original position pond matrix retaining ring.
Described light source module comprises the light source module matrix that a hollow circuit cylinder cylindrical shell is formed, and is located at the light source in light source module matrix from the bottom to top successively, is arranged on light source optical filter in light source module matrix and parallel light lens respectively by optical filter pressure ring and parallel light lens pressure ring in described light source module matrix.
Described information module comprises the information module matrix that a hollow circuit cylinder cylindrical shell is formed, and is located at the photoelectric sensor in information module matrix from the bottom to top successively, is arranged on information optical filter in information module matrix and converged light lens respectively by information optical filter pressure ring and converged light lens chuck ring in described information module matrix.
Place parallel light lens/converged light lens position in described light source module matrix/information module matrix and be provided with one for placing the ring-shaped step of parallel light lens/converged light lens.
Described scraps of paper carrier module comprises scraps of paper carrier and scraps of paper pressure ring; Described scraps of paper carrier is a right cylinder and has the uncovered blind hole for placing testing sample of horizontal bottom in the formation one that caves inward of its end face; Described scraps of paper pressure ring top is the boss that an external diameter is identical with scraps of paper carrier external diameter, height is identical with blind hole depth, bottom inwardly shortens one into described blind hole interference fit and the nested platform for being fixed the testing sample in blind hole within it, and described scraps of paper pressure ring has by bottom surface to end face the circular hole detection window that an aperture becomes large gradually.
Comprise the following steps:
(1), by opening up for the blind hole of scraps of paper carrier, sheet testing sample is placed in the horizontal bottom in blind hole, scraps of paper pressure ring is buckled in blind hole and compresses, making testing sample fill full detection window;
(2), overturn scraps of paper carrier module, make the opening down chamber putting into the original position pond baseline top be fixed on casing of the blind hole of scraps of paper carrier, power-on;
(3), the source emissioning light line of Microprocessor S3C44B0X light source module, light, successively through light source optical filter and parallel light lens, is then mapped on the testing sample in scraps of paper carrier module, excites generation fluorescence; Fluorescence converges on photoelectric sensor after converged light lens and information optical filter; Becoming to detect numerical value through microprocessor processes is again reflected on display screen, reads.
Compared with prior art, the invention has the beneficial effects as follows: the in-situ detection method of above-mentioned fluorescer migration amount is the fluorescent brightening agent concentration first detecting a certain position of testing sample when not contacting human body, the fluorescent brightening agent concentration at this position is again detected after contact human body, by comparing the fluorescent brightening agent concentration at this position before and after contact human body, just can obtain the migration amount of fluorescer, such detection method the most truly, directly can reflect the migration amount of fluorescer.In addition, this method first utilizes fluorescer standard items to obtain the typical curve of fluorescent brightening agent concentration-absorbance, then the absorbance recorded substitution typical curve is obtained fluorescent brightening agent concentration, makes testing result accurate, credible.The method detection speed is fast, in Site Detection sample, fluorescer migration amount provides reliable detection method.
Accompanying drawing explanation
Figure 1 shows that the external structure of fluorescer migration amount detector of the present invention;
Fig. 2 is the structural drawing in the original position pond of detector of the present invention;
Fig. 2 a is the structural drawing of the original position pond matrix of detector of the present invention;
Fig. 2 b is the structural drawing of scraps of paper carrier in detector original position pond of the present invention;
Fig. 2 c is the structural drawing of scraps of paper pressure ring in detector original position pond of the present invention;
Fig. 2 d is the structural drawing of the light source module of detector of the present invention;
Fig. 2 e is the structural drawing of the information module of detector of the present invention;
Figure 3 shows that the structural drawing in the standard solution pond of detector of the present invention;
Figure 4 shows that the circuit structure diagram of detector of the present invention.
Embodiment
In-situ detection method of the present invention with GB GB/T 27741-2011 for theoretical foundation, it is that the present invention formulates typical curve that simulation generates fluorescent brightener levels typical curve, make detected value of the present invention suitable with National Standard Method detected value, therefore testing result has authenticity, accuracy.The fluorescer migration amount detector used in this in-situ detection method is a kind of analytical instrument set up based on optics Fermat principle and spectral analysis chemiluminescence Cleaning Principle, comprises a casing, original position pond, RS232 interface, multiple button, LCDs, supply socket and switch and casing internal microprocessor control circuit part.Wherein, light source module, information module and scraps of paper carrier module are contained in original position pond.The inventive method is under the effect of the casing internal microprocessor control circuit of this fluorescer migration amount detector, irradiation with UV light in the light source module in original position pond is on the original napkin paper (i.e. the original scraps of paper) in the scraps of paper carrier module in original position pond, the useful optical information produced enters the photoelectric sensor in the information module in original position pond, then arrives microprocessor processes.Take off the original scraps of paper from scraps of paper carrier module, after wiping human body, become the use scraps of paper, at this moment, use scraps of paper upper part fluorescer just to have moved on skin; Again the use scraps of paper are put into scraps of paper carrier module, under the effect of microprocessor control circuit, irradiation with UV light in light source module is on the use scraps of paper in scraps of paper carrier module, and the useful optical information of generation enters the photoelectric sensor in information module, then arrives microprocessor processes.Optical information on the original scraps of paper deduct use the optical information on the scraps of paper be exactly on napkin paper fluorescer move to the optical information on skin.This optical information of typical curve process that microprocessor was formulated by early stage, just can calculate the migration amount of fluorescer.Due to the original scraps of paper and the use scraps of paper being the same scraps of paper, so claim this kind of detection method to be in situ detection method.It can reflect the migration amount of napkin paper fluorescer in use truly.Net result is shown by LCDs.
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Fluorescer migration amount detector, its external structure, see Fig. 1, comprises casing 1, and the upper surface of casing 1 is provided with LCDs 5, original paper key 41, acknowledgement key 42, makes paper using key 43, migration amount key 44; Casing 1 upper surface also arranges original position pond 2, and casing 1 side is provided with power control switch 6, supply socket 7 and RS232 interface 3, has accommodation space and be equiped with microprocessor control circuit in casing 1.Wherein, it is inner that original position pond 2 part is installed on casing 1, operation respective keys allows instrument complete multinomial contents of program after powering, such as, original paper key is used for measuring the original amount of fluorescer in the original scraps of paper, make paper using key be used for measuring use after in the scraps of paper fluorescer use after content, (fluorescent brightener levels is poor for fluorescent brightener levels difference before and after the scraps of paper can use by migration amount key, i.e. content after fluorescer migration amount=original amount-use) calculate and be presented in LCDs, can testing result be stored by acknowledgement key and the fluorescent brightener levels value in the scraps of paper to be measured is presented in LCDs.Casing internal is equipped with microprocessor, chip, storer and circuit board etc.
The structure in original position pond 2 as shown in Figure 2, comprises and detects main body and scraps of paper carrier module, all make with the aluminum material after black plastic or blackening process.
In Fig. 2, detect main body and comprise an original position pond matrix 25, this original position pond matrix 25 is inverted truncated cone-shaped structures, and symmetrically in the side of round platform be provided with two through holes (angle of two through hole axis is 90 °), for splendid attire light source module 26 and information module 27, these two through holes are cylindrical and extend to end face; Be provided with the uncovered cylindrical chamber of a projection (diameter of this chamber outer wall is less than the end face of round platform) at the end face of round platform, be used for the scraps of paper carrier module of splendid attire cylinder type, and with scraps of paper carrier module clearance fit; These two through holes and chamber be communicate (its vertical structure cut-open view see Fig. 2 a).A band female original position pond matrix retaining ring 24 is established in the outside of this original position pond matrix 25 end face chamber, this original position pond matrix retaining ring 24 is together by a threaded connection with the outside of original position pond matrix 25 end face chamber, thus is fixed on casing 1 by original position pond matrix 25.
Detect main body also to comprise and be placed on light source module 26 (its vertical structure cut-open view is see Fig. 2 d) in the through hole of two, matrix 25 side, original position pond and information module 27 (its vertical structure cut-open view is see Fig. 2 e) respectively.Wherein, light source module 26 comprises the light source module matrix 266 that a hollow circuit cylinder cylindrical shell is formed, and also comprises the LED light source 265 (the present embodiment uses the LED light source of 348nm) be located at successively from the bottom to top in light source module matrix 266, light source optical filter 263 (light of 348 ± 2nm only can be allowed to pass through) and parallel light lens 262.Light source optical filter 263 and parallel light lens 262 are arranged in light source module matrix 266 respectively by optical filter pressure ring 264 and parallel light lens pressure ring 261, and the outside surface of optical filter pressure ring 264 and parallel light lens pressure ring 261 has external thread to match with the internal thread in light source module matrix 266.Also can be provided with a ring-shaped step in the position of light source module intrinsic silicon placement parallel light lens, during installation, first parallel light lens is placed on step, then be locked with parallel light lens pressure ring.Light source optical filter is placed in the focus of parallel light lens, and according to optics Fermat principle, the parallel light lens other end just can penetrate directional light, and uniform irradiation is on the scraps of paper to be measured.According to spectral analysis chemiluminescence principle, this directional light makes the fluorescent material that the scraps of paper to be measured add produce 430nm fluorescence formation transmitting illuminant as excitation source, feeds back to information module 27.
Information module 27 also comprises the information module matrix 276 that a hollow circuit cylinder cylindrical shell is formed, also comprise and be located at photoelectric sensor in information module matrix 276 275 (adopting SI APD S5343), information optical filter 273 (only allow the light of 430 ± 2nm by) and converged light lens 272 (diameter is 10mm, f=6.25) from the bottom to top successively.Information optical filter 273 and converged light lens 272 are arranged in information module matrix 276 respectively by information optical filter pressure ring 274 and converged light lens chuck ring 271, and the outside surface of information optical filter 273 and converged light lens 272 has external thread to match with the internal thread in information module matrix 276.Also can be provided with a ring-shaped step in the position of information module intrinsic silicon placement converged light lens, during installation, first converged light lens are placed on step, then collector lens pressure ring of using foreign currency be locked.
In Fig. 2, scraps of paper carrier module comprises scraps of paper carrier 21 and scraps of paper pressure ring 23 (as Fig. 2 b and 2c).Scraps of paper carrier 21 is a right cylinder, and has the uncovered blind hole of horizontal bottom, for placing the scraps of paper 22 to be measured in the formation one that caves inward of its end face.Scraps of paper pressure ring 23 top is a boss, conveniently takes, and scraps of paper pressure ring 23 bottom inwardly shortens a platform into, and the blind hole interference fit of this platform and scraps of paper carrier 21 is also nested in this blind hole, for being fixed the scraps of paper to be measured 22 in blind hole; Scraps of paper pressure ring 23 has a detection window by bottom surface to end face, this detection window is circular hole, and in order to make light path unobstructed, aperture diminishes along end face gradually to bottom surface, (aperture, minimum place is 8mm to form a bell-mouthed through hole, that is the scraps of paper to be measured can be that diameter is not less than the circle of 8mm or other is irregularly shaped), the scraps of paper 22 to be measured can be exposed.In order to make gland and platform coordinate better, the boss external diameter of scraps of paper pressure ring is identical with the external diameter of scraps of paper carrier, and boss height is identical with blind hole depth.During use, by opening up for the blind hole of scraps of paper carrier, the sheet scraps of paper to be measured are placed in the horizontal bottom of blind hole, cover and compress scraps of paper pressure ring, the scraps of paper to be measured being revealed from detection window, then scraps of paper carrier module is put upside down, make blind hole opening down, insert original position pond matrix; Like this, not only the shape of the scraps of paper to be measured is unrestricted, and area of detection all unifications of all scraps of paper to be measured, and testing result is more reliable.
In Fig. 3, standard solution pond 31 for the present invention formulate typical curve design, its shape and size that are outside and inside all the same with scraps of paper carrier module (scraps of paper carrier and scraps of paper pressure ring combine after scraps of paper carrier module), namely the space of detection window is the space of this standard solution pond for splendid attire standard solution.The cylindrical cavity that matrix 25 top, original position pond can be inserted in standard solution pond 31 is indoor, and inner light path is constant.During use, standard solution is injected in the space in standard solution pond, measure the fluorescent value of variable concentrations standard solution as stated above, and make typical curve equation (when formulating typical curve and using, because what standard solution pond was in-built is liquid, original position pond should be inverted, simultaneously, whole instrument is also inverted and is detected, but position inversion does not affect light path and testing result).
Circuit connecting relation of the present invention is, as shown in Figure 4, microprocessor 51 and LED light source 265, photoelectric sensor 275 is connected with LCDs 5 custom circuit, the open and close of LED light source in Microprocessor S3C44B0X light source module, the light that LED light source sends inspires the fluorescence of the scraps of paper to be measured in scraps of paper carrier module successively by light source optical filter 263 and parallel light lens 262, information module then by the fluorescence signal that collects successively by converged light lens 272, information optical filter 273 and photoelectric sensor 275 feed back to microprocessor, optical signal prosessing is just become digital signal by microprocessor, then fluorescence content value is presented in LCDs.
In the present embodiment, all parts all adopt conventional commercial product, and such as, LED light source adopts Japanese Ya company 348nm luminotron (luminance parameter is at more than 200mcd), the silicon light pipe that photoelectric sensor adopts Japanese Bin Song company to produce, model is S5343; Microprocessor is the 8-bit microcontroller of the STC89 series that SST company produces, and internal storage is 64K.Other have all alternative the said goods of product of equivalent efficacy.
The detection method of above-mentioned in situ detection instrument provided by the invention and principle of work: first by opening up for the blind hole of scraps of paper carrier 21, the scraps of paper to be measured are placed in the horizontal bottom of blind hole, scraps of paper pressure ring 23 is buckled in blind hole and compresses, make to appear in the detection window on scraps of paper pressure ring 23 whole are scraps of paper to be measured, upset scraps of paper carrier module, after making the blind hole of scraps of paper carrier 21 opening down, put it in the chamber at matrix 25 top, original position pond be fixed on casing 1, power-on 5; LED light source 265 emission of light of Microprocessor S3C44B0X light source module 26, light, successively through light source optical filter 263 and parallel light lens 262, is then mapped on the scraps of paper to be measured in scraps of paper carrier module, excites generation fluorescence; Fluorescence converges on photoelectric sensor 275 after converged light lens 272 (focus on and strengthen fluorescence signal) and information optical filter 273 (elimination parasitic light); The microprocessor processes of light signal through being attached thereto becomes to detect numerical value, the database that the fluorescence content value prestoring a large amount of standard model in microprocessor is aggregated into corresponding fluorescence intensity data, comparing in the fluorescence intensity level recorded and database, associate with corresponding fluorescence content value again, finally fluorescence content value is reflected in LCDs 5, reads.
The using method of in situ detection instrument is introduced below in conjunction with concrete operations.
The formulation of typical curve, adopts GB/T 27741-2011 to be theoretical foundation, formulates typical curve to simulate generation fluorescent brightener levels typical curve mode.Contrast instrument adopts Shimadzu mini-1240 ultraviolet spectrophotometer, and adopt National Standard Method Plays material VBL (stilbene biphenyl) to do the standard substance of this standard curve formulation, such testing result meets national standard.
(a) extract: with distilled water or deionized water to prepare the concentration of volume percent obtained be 0.1%pH be 8.0-9.0 ammonia spirit.
B () VBL (100mg/L) standard solution: accurately take 100mg VBL, pours in the brown volumetric flask of 1L after dissolving with the extract obtained in (a), then use extract constant volume to scale.VBL standard solution should keep in Dark Place, and the resting period is no more than 24h.
(c) VBL standard working solution: draw VBL (100mg/L) standard solution that obtains in 1.0mL, 2.0mL, 5.0mL, 10.0mL, 15.0mL, 20.0mL (b) respectively in 100mL volumetric flask, be diluted to scale with the extract that (a) obtains, preparation obtains the VBL standard working solution of 1.0mg/L, 2.0mg/L, 5.0mg/L, 10.0mg/L, 15.0mg/L, 20.0mg/L.
D () formulates working curve: regulate Shimadzu mini-1240 ultraviolet spectrophotometer wavelength to be 348nm, detect the absorbance of VBL standard working solution that (c) obtains respectively, take absorbance as ordinate, the concentration of VBL standard working solution forms working curve for horizontal ordinate.
Regulate in situ detection instrument, by in-situ detection method of the present invention, the VBL standard working solution of variable concentrations in (c) is injected standard solution pond respectively to detect, take fluorescent value as ordinate, the concentration of VBL standard working solution forms working curve for horizontal ordinate.Then the working curve comparison formed with Shimadzu mini-1240 ultraviolet spectrophotometer, result is as shown in table 1,
The fluorescence measurement of table 1 VBL standard working solution
| C (standard solution mg/L) | 1.0 | 2.0 | 5.0 | 10.0 | 15.0 | 20.0 |
| A (shading value the present invention) | 0.037 | 0.072 | 0.169 | 0.350 | 0.519 | 0.686 |
| A (shading value, Shimadzu) | 0.035 | 0.068 | 0.170 | 0.340 | 0.515 | 0.690 |
The testing result that the in-situ detection method of result display inventive method and in situ detection instrument obtain is true accurate again.
E the mensuration of () migration amount: taken off in standard solution pond after standard of instruments curve is formed, changes scraps of paper carrier module and detects;
Migration amount computing method:
If: original scraps of paper fluorescence content detected value=A
Use rear scraps of paper fluorescence content detected value=B
So migration amount expression formula: (A-B/A) × 100%
Get the original scraps of paper of napkin paper of one size >=Ф 8mm, put into scraps of paper carrier 21, then scraps of paper pressure ring 23 is pressed into shape all-in-one-piece scraps of paper carrier module in scraps of paper carrier 21, insert in original position pond matrix 25.Press original paper key 41 to detect, store testing result by acknowledgement key 42 and the original amount of fluorescer in napkin paper is shown in LCDs 5.To take off in the scraps of paper carrier module wiping on human body face of the original scraps of paper of napkin paper and, then put into scraps of paper carrier 21 once, then scraps of paper pressure ring 23 is pressed in scraps of paper carrier 21 and forms scraps of paper carrier module, insert in original position pond matrix 25.Press and paper using key 43 is detected, acknowledgement key 42 stores testing result and is shown in LCDs 5 by content after the use of fluorescer in napkin paper.Press migration amount key 44, its difference is shown in LCDs 5.By acknowledgement key 42, in napkin paper, fluorescer uses the numerical value of rear fluorescer migration amount be calculated and show in LCDs 5.
Testing sample in said method can be the planar sample that the scraps of paper, pieces of cloth etc. can be pressed in scraps of paper carrier module.
Can find out, this in situ detection instrument volume is little, and in-situ detection method detection speed of the present invention is fast, can the migration amount of fluorescer in field quick detection napkin paper; And be measure the fluorescent value before and after same napkin paper and human contact, can reflect truly napkin paper after a procedure fluorescer move to the migration amount of human body, testing result has authenticity, accuracy.In instrument, prestore the fluorescent value under variable concentrations, through microprocessor voluntarily comparison just obtain the fluorescent value of testing sample, efficient and convenient during use.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. an in-situ detection method for fluorescer migration amount, first measures fluorescence content value A on original testing sample, and testing sample measures fluorescence content value B, fluorescer migration amount=(A-B)/A × 100% after using again.
2. in-situ detection method according to claim 1, is characterized in that, fluorescence content value in situ detection instrument records; Described in situ detection instrument comprises casing, and described casing upper surface is provided with display screen, some buttons and detection module, is equiped with the microprocessor control circuit be electrically connected with described display screen, button and detection module in described casing.
3. in-situ detection method according to claim 2, is characterized in that, described detection module is an original position pond, and described original position pond comprises the detection main body and scraps of paper carrier module all made with the aluminum material after black plastic or blackening process.
4. in-situ detection method according to claim 3, it is characterized in that, described detection main body comprises the original position pond matrix of an inverted round table shape, in the side of described original position pond matrix round platform symmetrical be provided with two be respectively used to splendid attire light source module and information module and extend to the cylindrical hole of end face; Be provided with one at the end face of described original position pond matrix and be used for the cylindrical chamber that the projection of scraps of paper carrier module described in splendid attire is uncovered, diameter is less than described original position pond matrix end face; Described through hole and chamber communicate.
5. in-situ detection method according to claim 4, is characterized in that, the outside surface of described original position pond matrix end face chamber is provided with external thread and is fixed on casing by original position pond matrix by a band female original position pond matrix retaining ring.
6. the in-situ detection method according to claim 4 or 5, it is characterized in that, described light source module comprises the light source module matrix that a hollow circuit cylinder cylindrical shell is formed, and is located at the light source in light source module matrix from the bottom to top successively, is arranged on light source optical filter in light source module matrix and parallel light lens respectively by optical filter pressure ring and parallel light lens pressure ring in described light source module matrix.
7. according to the arbitrary described in-situ detection method of claim 4-6, it is characterized in that, described information module comprises the information module matrix that a hollow circuit cylinder cylindrical shell is formed, and is located at the photoelectric sensor in information module matrix from the bottom to top successively, is arranged on information optical filter in information module matrix and converged light lens respectively by information optical filter pressure ring and converged light lens chuck ring in described information module matrix.
8. the in-situ detection method according to claim 6 or 7, is characterized in that, places parallel light lens/converged light lens position and be provided with one for placing the ring-shaped step of parallel light lens/converged light lens in described light source module matrix/information module matrix.
9., according to the arbitrary described in-situ detection method of claim 3-8, it is characterized in that, described scraps of paper carrier module comprises scraps of paper carrier and scraps of paper pressure ring; Described scraps of paper carrier is a right cylinder and has the uncovered blind hole for placing testing sample of horizontal bottom in the formation one that caves inward of its end face; Described scraps of paper pressure ring top is the boss that an external diameter is identical with scraps of paper carrier external diameter, height is identical with blind hole depth, bottom inwardly shortens one into described blind hole interference fit and the nested platform for being fixed the testing sample in blind hole within it, and described scraps of paper pressure ring has by bottom surface to end face the circular hole detection window that an aperture becomes large gradually.
10. in-situ detection method according to claim 9, is characterized in that, comprises the following steps:
(1), by opening up for the blind hole of scraps of paper carrier, sheet testing sample is placed in the horizontal bottom in blind hole, scraps of paper pressure ring is buckled in blind hole and compresses, making testing sample fill full detection window;
(2), overturn scraps of paper carrier module, make the opening down chamber putting into the original position pond baseline top be fixed on casing of the blind hole of scraps of paper carrier, power-on;
(3), the source emissioning light line of Microprocessor S3C44B0X light source module, light, successively through light source optical filter and parallel light lens, is then mapped on the testing sample in scraps of paper carrier module, excites generation fluorescence; Fluorescence converges on photoelectric sensor after converged light lens and information optical filter; Becoming to detect numerical value through microprocessor processes is again reflected on display screen, reads.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105738323A (en) * | 2016-02-26 | 2016-07-06 | 长春美泰仪器有限公司 | Detection method for aluminum-containing food additive in flour product and on-site quick detector |
| CN106770108A (en) * | 2016-12-13 | 2017-05-31 | 吉林出入境检验检疫局检验检疫技术中心 | A kind of method that noxious material is detected based on optical fiber nanobiosensor |
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