CN104605860B - A kind of fingerprint displaying method in matsurface permeability object - Google Patents
A kind of fingerprint displaying method in matsurface permeability object Download PDFInfo
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- CN104605860B CN104605860B CN201510093460.8A CN201510093460A CN104605860B CN 104605860 B CN104605860 B CN 104605860B CN 201510093460 A CN201510093460 A CN 201510093460A CN 104605860 B CN104605860 B CN 104605860B
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Abstract
The present invention relates to a kind of fingerprint displaying method in matsurface permeability object, with fluorescence visualization reagent, matsurface permeability object is soaked or sprayed, the control response time is 5sec ~ 15sec, then matsurface permeability object is dried 5 ~ 30min in the environment of relative humidity is less than 40%, temperature 50 C ~ 120 DEG C, with wavelength be 532 nanometers, spectrum halfwidth degree be less than 1 nanometer of laser and irradiate dried described matsurface permeability object, and control the illumination forming over 500,000 luxs on described matsurface permeability object surface.The present invention by the adjustment of fluorescence visualization reagent formula proportion, reaction temperature, drying condition, irradiate with laser adjustment so that the present invention can manifest to the impression of the hand on matsurface permeability object surface.
Description
Technical field
The present invention relates to a kind of fingerprint displaying method in matsurface permeability object.
Background technology
Reconnoitre field in criminal material evidence, need to find and obtain the crime material evidence that suspect leaves, these material evidences include referring to
Stricture of vagina material evidence, palmmprint material evidence, the trace evidence of DNA speciality can be reflected, build crime fact chain of evidence whereby, establish for punishing crimes
Determine legal argument basis.
But, in professional Forensic Science field, the impression of the hand on brick, waddy, fabric, leather etc. is to be difficult to be found
, and brick, waddy etc. are common criminal material evidences in China, in addition, a lot of case is through shifting corpse, therefore, such as
Fruit can find impression of the hand on brick, waddy, medicated clothing, and the detection for case is significant.
Although there being the report carrying out fingerprint displaying using indenes diketone in prior art, but, the method in report is equal
Brick, waddy, fabric, the impression of the hand on leather cannot be obtained.
Content of the invention
The technical problem to be solved is that offer is a kind of can obtain matsurface permeability object surface impression of the hand
Fingerprint displaying method.
For solving above technical problem, the present invention adopts the following technical scheme that：
A kind of fingerprint displaying method in matsurface permeability object, is entered to matsurface permeability object with fluorescence visualization reagent
Row soaks or sprays, and the control response time is 5sec ~ 15sec, then by described matsurface permeability object in relative humidity
Less than 5 ~ 30min is dried in the environment of 40%, temperature 50 C ~ 120 DEG C, with wavelength be 532 nanometers, spectrum halfwidth degree receives less than 1
The laser of rice irradiates dried described matsurface permeability object, and controls on described matsurface permeability object surface
Form over the illumination of 500,000 luxs, the handss in described matsurface permeability object under light cutoff filter mirror under 540 nanometers
Print can manifest, and wherein, by mass percentage, the formula of described fluorescence visualization reagent is：Indenes diketone 0.01% ~ 0.2%, ice vinegar
Acid 0.9% ~ 1.1%, ethyl acetate 8% ~ 10%, petroleum ether 88.7% ~ 91.09%.
In present embodiment, impression of the hand refers to fingerprint and palmmprint.
In present embodiment, 540 nanometers of lower light cutoff filter mirrors refer to only to allow 540 nanometers and above light wave passes through, its
His light wave then intransitable filter lenss.
Specifically, described matsurface permeability object is brick, timber, fabric or leather.
If the permeability of object is stronger, can be using the relatively low fluorescence visualization reagent of indenes diketone mass concentration, if object oozes
Permeability is weaker, then can be using the higher fluorescence visualization reagent of indenes diketone mass concentration.But, if indenes diketone excessive concentration,
The impression of the hand figure of generation is easily made to obscure it is impossible to use, low using indenes diketone concentration, easily produce clearly impression of the hand figure, but
If be concentration too low it is also possible to make impression of the hand not see or invisible.
More specifically, when described matsurface permeability object is brick, by mass percentage, described fluorescence manifests
The formula of agent is：Indenes diketone 0.1% ~ 0.15%, glacial acetic acid 0.9% ~ 1.1%, ethyl acetate 8% ~ 10%, petroleum ether 89% ~ 90.95%；
The temperature carrying out described drying is 100 DEG C ~ 120 DEG C, and drying time is 5 min ~ 15min.
More specifically, when described matsurface permeability object is timber, by mass percentage, described fluorescence shows
The formula of existing agent is：Indenes diketone 0.15% ~ 0.2%, glacial acetic acid 0.9% ~ 1.1%, ethyl acetate 8% ~ 10%, petroleum ether 88.7% ~
90.95%；The temperature carrying out described drying is 80 ~ 100 DEG C, and drying time is 10 ~ 20min.
More specifically, when described matsurface permeability object is fabric, by mass percentage, described fluorescence shows
The formula of existing agent is：Indenes diketone 0.05% ~ 0.15%, glacial acetic acid 0.9% ~ 1.1%, ethyl acetate 8% ~ 10%, petroleum ether 88.75% ~
91.05%；The temperature carrying out described drying is 50 DEG C ~ 80 DEG C, and drying time is 10 ~ 30min.
More specifically, when described matsurface permeability object is leather, by mass percentage, described fluorescence shows
The formula of existing agent is：Indenes diketone 0.1% ~ 0.2%, glacial acetic acid 0.9% ~ 1.1%, ethyl acetate 8% ~ 10%, petroleum ether 88.7% ~
91.0%；The temperature carrying out described drying is 50 DEG C ~ 80 DEG C, and drying time is 10 ~ 30min.
Specifically, before soaking or spraying described fluorescence visualization reagent, control described matsurface permeability object aqueous
Rate is less than 8%.
More specifically, before soaking or spraying described fluorescence visualization reagent, controlling described matsurface permeability object to contain
Water rate is 6 ~ 7%.
Specifically, described matsurface permeability object carries out described drying in the environment of relative humidity is for 25% ~ 35%.
Specifically, the illumination that described matsurface permeability object surface is formed is controlled to be 500,000 ~ 1,000,000 luxs.
More specifically, the collocation method of described fluorescence visualization reagent is：It is 20 DEG C ~ 30 DEG C in temperature, relative humidity is 50%
In ~ 70% environment, described glacial acetic acid and described ethyl acetate are pressed formula ratio mix homogeneously, is subsequently adding formula ratio
Described indenes diketone, stirring is dissolved, and is eventually adding the described petroleum ether of formula ratio, and the fluorescence described in obtaining final product that stirs manifests
Agent.
In present embodiment, described fluorescence visualization reagent is now joined and is first used, or 4 DEG C of cryopreservations in brown light-shading bottle, and
Should be finished within 2 weeks.
Due to the enforcement of above technical scheme, the present invention compared with prior art has the advantage that：
The present invention is by the adjustment of fluorescence visualization reagent formula proportion, reaction temperature, drying condition, the laser irradiating
Adjustment is so that the present invention can manifest to the impression of the hand on matsurface permeability object surface.
Brief description
Accompanying drawing 1 is the fingerprint of embodiment 1；
Accompanying drawing 2 is the fingerprint of embodiment 2；
Accompanying drawing 3 is the fingerprint of embodiment 3；
Accompanying drawing 4 is the fingerprint of comparative example 1；
Accompanying drawing 5 is the fingerprint of comparative example 2.
Specific embodiment
With reference to specific embodiment, the present invention will be further described in detail, but is not limited to these embodiments.
Embodiment 1（Sample is the brick with fingerprint）
（1）, by dry method control brick moisture content be 7%；
（2）, 25 DEG C, relative humidity be 60% in the environment of, 1.0g glacial acetic acid and 9.0g ethyl acetate are fully mixed；
It is subsequently adding 0.12g indenes diketone, is sufficiently stirred for dissolving, be subsequently adding 89.88g petroleum ether, be sufficiently stirred for dissolving, be configured to fluorescence
Visualization reagent, fluorescence visualization reagent is now with the current, such as needs to preserve, then puts into 4 DEG C of cryopreservations in brown light-shading bottle, and should be within 2 weeks
It is finished；
（3）, brick is immersed in fluorescence visualization reagent, soak 10sec；
（4）, by soak after brick airing under ambient room temperature (25 DEG C) after put into relative humidity be 30%, temperature 120
10min is dried in the environment of DEG C；
（5）, be 532 nanometers with wavelength, spectrum halfwidth degree is less than 1 nanometer of laser and irradiates dried brick, and control
Brickmaking head surface forms the illumination of 1,000,000 luxs, the impression of the hand obtaining under light cutoff filter mirror under 540 nanometers by photographic means
See Fig. 1.
Embodiment 2（Sample is the timber with fingerprint）
（1）, by dry method control moisture content be 7%；
（2）, 25 DEG C, relative humidity be 60% in the environment of, 1.0g glacial acetic acid and 9.0g ethyl acetate are fully mixed；
It is subsequently adding 0.15g indenes diketone, is sufficiently stirred for dissolving, be subsequently adding 88.5g petroleum ether, be sufficiently stirred for dissolving, be configured to fluorescence
Visualization reagent, fluorescence visualization reagent is now with the current, such as needs to preserve, then puts into 4 DEG C of cryopreservations in brown light-shading bottle, and should be within 2 weeks
It is finished；
（3）, the timber with fingerprint is immersed in fluorescence visualization reagent, soak 10sec；
（4）, by soak after timber airing under ambient room temperature (25 DEG C) after put into relative humidity be 30%, temperature 100
15min is dried in the environment of DEG C；
（5）, be 532 nanometers with wavelength, spectrum halfwidth degree is less than 1 nanometer of laser and irradiates dried timber, and control
Wood surface processed forms the illumination of 500,000 luxs, sees Fig. 2 by the impression of the hand that photographic means obtain under 540 nanometers of filter lenss.
Embodiment 3（Sample is the fabric with fingerprint）
（1）, by dry method control moisture content of fabric be 7%；
（2）, 25 DEG C, relative humidity be 60% in the environment of, 1.0g glacial acetic acid and 9.0g ethyl acetate are fully mixed；
It is subsequently adding 0.1g indenes diketone, is sufficiently stirred for dissolving, be subsequently adding 89.9g petroleum ether, be sufficiently stirred for dissolving, be configured to fluorescence and show
Existing agent, fluorescence visualization reagent is now with the current, such as needs to preserve, then puts into 4 DEG C of cryopreservations in brown light-shading bottle, and should use within 2 weeks
Complete；
（3）, fabric is immersed in fluorescence visualization reagent, soak 10sec；
（4）, by soak after fabric airing under ambient room temperature (25 DEG C) after put into relative humidity be 30%, 80 DEG C of temperature
In the environment of 20min is dried；
（5）, be 532 nanometers with wavelength, spectrum halfwidth degree is less than 1 nanometer of laser and irradiates dried fabric, and control
Fabric face processed forms the illumination of 1,000,000 luxs, the impression of the hand obtaining under light cutoff filter mirror under 540 nanometers by photographic means
See Fig. 3.
Comparative example 1（Sample is the brick with fingerprint）
By 100mg indenes diketone, 1ml glacial acetic acid, 9ml ethyl acetate, 90ml petroleum ether mix homogeneously, prepared fluorescence manifests
Agent, brick is immersed in 10sec in this fluorescence visualization reagent, be subsequently placed in 85 DEG C, relative humidity be 65% environment in be dried 5 points
Clock, with the light irradiation of 510nm or 530nm, is shown in Fig. 4 by the impression of the hand that photographic means obtain under orange filter.
Comparative example 2（Sample is the timber with fingerprint）
（1）, 25 DEG C, relative humidity be 60% in the environment of, 1g glacial acetic acid and 10g ethyl acetate are fully mixed；Then
Add 0.1g indenes diketone, be sufficiently stirred for dissolving, be subsequently adding 88.9g petroleum ether, be sufficiently stirred for dissolving, be configured to fluorescence and manifest
Agent, fluorescence visualization reagent is now joined existing；
（2）, timber is immersed in fluorescence visualization reagent, soak 10sec；
（3）, the timber after soaking is 70%, 10min is dried in the environment of 120 DEG C of temperature in relative humidity；
（4）, using the alternative light source that is made up of metal halogen light source, produce main peak ripple by way of light filter cut-off filter
A length of 530 nanometers of monochromatic spectrum, is shown in Fig. 5 by the impression of the hand that photographic means obtain.
Above the present invention is described in detail, its object is to allow the personage being familiar with this art will appreciate that this
The content of invention is simultaneously carried out, and can not be limited the scope of the invention with this, all spirit institutes according to the present invention
The equivalence changes made or modification, all should cover within the scope of the present invention.
Claims (9)
1. a kind of fingerprint displaying method in matsurface permeability object it is characterised in that：With fluorescence visualization reagent, matsurface is oozed
Permeability object is soaked or is sprayed, and the control response time is 5sec ~ 15sec, then by described matsurface permeability object
5 mins ~ 30min is dried in the environment of relative humidity is less than 40%, temperature 50 C ~ 120 DEG C, is 532 nanometers, spectrum with wavelength
The laser that halfwidth degree is less than 1 nanometer irradiates dried described matsurface permeability object, and controls described matsurface
Permeability object surface forms over the illumination of 500,000 luxs, and under light cutoff filter mirror under 540 nanometers, described matsurface oozes
Impression of the hand on permeability object can manifest, and wherein, by mass percentage, the formula of described fluorescence visualization reagent is：Indenes diketone
0.01% ~ 0.2%, glacial acetic acid 0.9% ~ 1.1%, ethyl acetate 8% ~ 10%, petroleum ether 88.7% ~ 91.09%；Soaking or spraying described
Fluorescence visualization reagent before, control described matsurface permeability object moisture content to be less than 8%.
2. the fingerprint displaying method in matsurface permeability object according to claim 1 it is characterised in that：Described is thick
Matte permeability object is brick, timber, fabric or leather.
3. the fingerprint displaying method in matsurface permeability object according to claim 2 it is characterised in that：When described
Matsurface permeability object be brick when, by mass percentage, the formula of described fluorescence visualization reagent is：Indenes diketone 0.1% ~
0.15%, glacial acetic acid 0.9% ~ 1.1%, ethyl acetate 8% ~ 10%, petroleum ether 89% ~ 90.95%；The temperature carrying out described drying is
100 DEG C ~ 120 DEG C, drying time is 10min ~ 15min.
4. the fingerprint displaying method in matsurface permeability object according to claim 2 it is characterised in that：When described
Matsurface permeability object be timber when, by mass percentage, the formula of described fluorescence visualization reagent is：Indenes diketone
0.15% ~ 0.2%, glacial acetic acid 0.9% ~ 1.1%, ethyl acetate 8% ~ 10%, petroleum ether 88.7% ~ 90.95%；Carry out described drying
Temperature is 80 DEG C ~ 100 DEG C, and drying time is 10 min ~ 20min.
5. the fingerprint displaying method in matsurface permeability object according to claim 2 it is characterised in that：When described
Matsurface permeability object be fabric when, by mass percentage, the formula of described fluorescence visualization reagent is：Indenes diketone
0.05% ~ 0.15%, glacial acetic acid 0.9% ~ 1.1%, ethyl acetate 8% ~ 10%, petroleum ether 88.75% ~ 91.05%；Carry out described drying
Temperature be 50 DEG C ~ 80 DEG C, drying time be 10 min ~ 30min.
6. the fingerprint displaying method in matsurface permeability object according to claim 2 it is characterised in that：When described
Matsurface permeability object be leather when, by mass percentage, the formula of described fluorescence visualization reagent is：Indenes diketone 0.1%
~ 0.2%, glacial acetic acid 0.9% ~ 1.1%, ethyl acetate 8% ~ 10%, petroleum ether 88.7% ~ 91%；The temperature carrying out described drying is 50
DEG C ~ 80 DEG C, drying time is 10 min ~ 30min.
7. the fingerprint displaying method in matsurface permeability object according to claim 1 it is characterised in that：Soak or
Before the described fluorescence visualization reagent of spraying, described matsurface permeability object moisture content is controlled to be 6 ~ 7%.
8. the fingerprint displaying method in matsurface permeability object according to any one of claim 1 to 6, its feature exists
In：Described matsurface permeability object carries out described drying in the environment of relative humidity is for 25% ~ 35%.
9. the fingerprint displaying method in matsurface permeability object according to any one of claim 1 to 7, its feature exists
In：The collocation method of described fluorescence visualization reagent is：It is 20 DEG C ~ 30 DEG C in temperature, relative humidity is in 50% ~ 70% environment,
Described glacial acetic acid and described ethyl acetate are pressed formula ratio mix homogeneously, are subsequently adding the described indenes diketone of formula ratio,
Stirring is dissolved, and is eventually adding the described petroleum ether of formula ratio, stirs and obtains final product described fluorescence visualization reagent.
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| CN106841140B (en) * | 2017-01-22 | 2018-07-24 | 苏州晓松科技开发有限公司 | A kind of biological evidence trace shows extracting method |
| CN106802292B (en) * | 2017-01-22 | 2019-07-02 | 苏州晓松科技开发有限公司 | A method of showing permeability object biological evidence trace |
| CN107607504B (en) * | 2017-09-04 | 2020-10-13 | 苏州晓松科技开发有限公司 | Bioluminescence developing agent for developing biological material evidence trace on metal object and developing method |
| CN109254149B (en) * | 2018-09-10 | 2022-02-25 | 公安部物证鉴定中心 | Method for showing occult blood trace and special reagent thereof |
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| US4176205A (en) * | 1976-03-24 | 1979-11-27 | Rockwell International Corporation | Fingerprint powder and method of application |
| JP3559754B2 (en) * | 2000-07-25 | 2004-09-02 | Ｎｅｃエレクトロニクス株式会社 | Fingerprint authentication device |
| CN101381368B (en) * | 2008-10-22 | 2011-04-13 | 江苏警官学院 | Ethylenediamine schiff base type sweat fingerprint fluorescent reagent, synthesis and use thereof |
| CN101418348A (en) * | 2008-12-11 | 2009-04-29 | 中国科学院过程工程研究所 | Construction method of HPLC fingerprint and DNA fingerprint of Saussurea Involucrata |
| TW201307490A (en) * | 2011-08-05 | 2013-02-16 | shi-yu Wu | Fingerprint-displaying spray and method utilizing spray to display fingerprint |
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