CN101082565A - Novel finger print developing reagent and developing method thereof - Google Patents
Novel finger print developing reagent and developing method thereof Download PDFInfo
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- CN101082565A CN101082565A CNA2007100526708A CN200710052670A CN101082565A CN 101082565 A CN101082565 A CN 101082565A CN A2007100526708 A CNA2007100526708 A CN A2007100526708A CN 200710052670 A CN200710052670 A CN 200710052670A CN 101082565 A CN101082565 A CN 101082565A
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Abstract
A new kind of fingerprint presentation reagent and the method of presentation which belongs to the detection technology area of trace quantity organic. The invention makes the paranitroaniline phenylfluorone ethanol liquor as the fingerprint reagent and it is easy to compose and to get the material and the composition technology is mature and the production efficiency is high and there is little poison minus effect for the user and the reaction is quick and it can get the fingerprint convenience, quickly, and clearly.
Description
Technical field
The present invention relates to a kind of novel finger print and manifest reagent and preparation method thereof and utilize this reagent to manifest the method for fingerprint, belong to the detection technique field of trace organic substance.
Background technology
It is variant that fingerprint has the people, throughout one's life constant and touch the characteristics of thing trace.Science correctly find, extract, manifest identify fingerprint for carry out investigation, punishing crime has important practice effect; Fingerprint identification is one of the most reliable method of carrying out individual identification, in forensic science, be used for verification, disclose and confirm crime; In the investigation and processing of accident, the victim of some accidents or disaster or dead person when gesture or other reasons with the naked eye are beyond recognition due to wound, extract their fingerprint, often can provide definite identification; In civil activity, whether in finger print data input I.D., credit card and the book borrowing and reading card with the individual, it is same with the holder to can be used to discern registration person; Same application also can be at security protection, safety check and the commercial affairs aspects such as unlatching, gateway management and control of stamping as automatic door lock; In clinical medicine, dermatoglyph can be examination and diagnoses the illness provides information and foundation; Along with popularizing and the application of automatic system of fingerprint recognition of computer technology, fingerprint technique and soon obtain more and more widely application in people's life.
1877, Charles Robert Richet Aubert was coated in liquor argenti nitratis ophthalmicus and has showed sweat fingerprint on the paper in research skin disease and glandular secretion process, becomes and foundes the first of fingerprint manifestation method.Find the silver nitrate appearance method from Aubert, fingerprint manifestation is from initial single and simple method, develops into the present professional technique that has become subject knowledge such as an integrated use physics, chemistry, biology and technology.
Utilize irradiations such as natural light, major light, blue-ray light and alternative light source to find, check fingerprint.Alternative light source is a kind of new type light source of developing in recent years, and (light of different-waveband in the scope of 310nm～1000nm), luminous energy is big, liquid light guide output, and is flexible, at home and abroad is commonly used in the site inspection to infrared from ultraviolet in output.
The ultraviolet light check.Impression of the hand is left over material and produce fluorescence under being excited of ultraviolet light, or some sweat stain, oil stain impression of the hand form the fluorescence fingerprint under UV-irradiation after fluorescent reagent is handled, with the extraction of taking pictures of uv photography method.
Ruhemann developed triketohydrindene hydrate in 1910, originally was used for biomedical boundary's check amino acid.Sweden countermeasure of crime scholar Oden in 1954 and Von Hof, people such as Israel forensic science worker J1Almog attempt the homolog of synthetic triketohydrindene hydrate, and Primary Study manifest the effect of fingerprint since its color difference of apparent fingerprint, application prospect is fine.Discoveries such as the C1A1Pounds of the U.S. and GlGrigg, manifesting of DFO is highly sensitive, manifests on the paper of back to leave no trace substantially (being light purple sometimes), has only through argon laser to excite, observe under specific optical filter, could find fingerprint, stained little to object.But the DFO price is higher, and the organic solvent trichorotrifluoroethane of use etc. are contaminated environment again.
Summary of the invention
The present invention provides a kind of synthetic simple, and raw material is easy to get, the synthetic technology maturation, and the productive rate height, little to user's toxic and side effect, be swift in response, novel finger print simple to operate manifests reagent and preparation method thereof; Another object of the present invention provides the process for show that this novel finger print manifests reagent.
The object of the present invention is achieved like this: a kind of novel finger print manifests reagent, adopts 2,3,7-trihydroxy-9-(4 '-nitro) phenylfluorone is as fingerprint presentation reagent, and structural formula is:
The synthetic method of fingerprint presentation reagent, from the synthetic inclined to one side triphenol triacetate of Pyrogentisinic Acid, again in sulfuric acid medium with the paranitrobenzaldehyde condensation, after hydrolysis, obtain the p-nitrophenyl fluorone.
The synthetic method of fingerprint presentation reagent is specifically: the aqueous acetic acid of chromium trioxide is dropped in Pyrogentisinic Acid's the aqueous acetic acid in 15 ℃ down reaction obtain 1,4-benzoquinone; Again 1,4-benzoquinone is joined in the acetic anhydride (sulfuric acid is acid medium) in batches and obtain inclined to one side triphenol triacetate in being reflected at below 50 ℃; In the ethanolic solution (is acid medium with sulfuric acid) of inclined to one side triphenol triacetate, add paranitrobenzaldehyde in 75 ℃ of reactions down in batches, at last the hydrolysis of back gained solids is obtained the p-nitrophenyl fluorone.
A kind of method of utilizing the nitrobenzophenone fluorone to carry out fingerprint manifestation, with fingerprint impression effect on the acid ethanol solution of nitrobenzophenone fluorone and the paper, colour developing, the paper that will manifest fingerprint takes out airing, can directly take pictures under natural lighting, obtains fingerprint.
The acid ethanol solution concentration of p-nitrophenyl fluorone is 5.0 * 10
-3Mol/L.
Novel finger print provided by the invention manifests reagent and process for show thereof, uses the p-nitrophenyl fluorone (to be called for short p-NO
2-PF) as the fingerprint manifestation agent, highly sensitive, selectivity is good, and reagent itself and solvent are harmless, and method is simple to utilize this reagent to carry out fingerprint manifestation, compared following advantage with DFO:
1, synthetic simple: as to adopt common inexpensive organic reagent can synthesize p-NO
2-PE, raw material is easy to get, synthetic technology maturation, productive rate height.
2, agents useful for same: p-NO
2-PF, solvent, micro acid medium all do not have toxic and side effect to human body, have reduced the injury to human body, and protection is the contact staff directly.
3, be swift in response: in the container that opens wide, add the p-NO for preparing in advance
2-PF acid ethanol solution drops into the guest materials that carries fingerprint, and about 20min fingerprint begins to display, and waits the more clear back that highlights of fingerprint directly to take out, and dries promptly capable of taking pictures after a few minutes.
4, needn't be placed on baking under the high temperature, normal-temperature reaction, normal temperature dries.
5, simple to operate: needn't valuable necessary instrument and loaded down with trivial details operational processes, simply laborsaving saving time.
6, fingerprint and object self gradation is bright and clear clear, directly finds a view under natural light and takes pictures, and needn't handle by dark room operation.
7, new and old fingerprint contrast: outmoded fingerprint still for fluorone reagent, has the good action effect because the sweat component portion volatilizees, and humidity is not enough, does not have fresh fingerprint sensitivity.
8, retention time is long: the fingerprint that has detected, and can keep and keep original fingerprint CF for a long time, filing and making his usefulness makes things convenient for, and application prospect is good.
Embodiment
The present invention is with to 2,3, and 7-trihydroxy-9-(4 '-nitro) phenylfluorone is p-nitrophenyl fluorone (p-NO
2-PF) as the fingerprint manifestation agent, its structural formula is:
Preparation method of the present invention is as follows:
By the synthetic inclined to one side triphenol triacetate of classic methods, in sulfuric acid medium and to the benzaldehyde condensation, after hydrolysis, then can get p-NO from the Pyrogentisinic Acid again
2-PF, its synthesis step is as follows:
The aqueous acetic acid of chromium trioxide is dropped in Pyrogentisinic Acid's the aqueous acetic acid in 15 ℃ down reaction obtain 1,4-benzoquinone; Again 1,4-benzoquinone is joined in the acetic anhydride (sulfuric acid is acid medium) in batches and obtain inclined to one side triphenol triacetate in being reflected at below 50 ℃; In the ethanolic solution (is acid medium with sulfuric acid) of inclined to one side triphenol triacetate, add paranitrobenzaldehyde in 75 ℃ of reactions down in batches, at last the hydrolysis of back gained solids is obtained the p-nitrophenyl fluorone.
Reaction principle is as follows:
The present invention utilizes p-NO
2The method that-PF carries out fingerprint manifestation is as follows:
With p-NO
2The acid ethanol solution of-PF, concentration are 5.0 * 10
-3Mol/L with fingerprint impression effect on the paper, generally can carry out at normal temperatures, and the time is 15min, and the fingerprint that is shown is brown, with p-NO
2-PF background color pink is with distinct contrast, and the paper that will manifest fingerprint takes out airing, can directly take pictures under natural lighting, is used to the evidence of collecting evidence.
Claims (5)
1, a kind of novel finger print manifests reagent, it is characterized in that adopting 2,3,7-trihydroxy-9-(4 '-nitro) phenylfluorone is as fingerprint presentation reagent, and structural formula is:
2, the synthetic method of the described fingerprint presentation reagent of claim 1 is characterized in that: from the synthetic inclined to one side triphenol triacetate of Pyrogentisinic Acid, again in sulfuric acid medium with the paranitrobenzaldehyde condensation, after hydrolysis, obtain the p-nitrophenyl fluorone.
3, the synthetic method of fingerprint presentation reagent according to claim 2, its feature in: the aqueous acetic acid of chromium trioxide is dropped in Pyrogentisinic Acid's the aqueous acetic acid in 15 ℃ down reaction obtain 1,4-benzoquinone; Again 1,4-benzoquinone is joined in the acetic anhydride (sulfuric acid is acid medium) in batches and obtain inclined to one side triphenol triacetate in being reflected at below 50 ℃; In the ethanolic solution (is acid medium with sulfuric acid) of inclined to one side triphenol triacetate, add paranitrobenzaldehyde in 75 ℃ of reactions down in batches, at last the hydrolysis of back gained solids is obtained the p-nitrophenyl fluorone.
4, a kind of method of utilizing the p-nitrophenyl fluorone to carry out fingerprint manifestation, it is characterized in that: with fingerprint impression effect on the acid ethanol solution of nitrobenzophenone fluorone and the paper, colour developing, the paper that will manifest fingerprint takes out airing, under natural lighting, can directly take pictures, obtain fingerprint.
5, the method for utilizing the p-nitrophenyl fluorone to carry out fingerprint manifestation according to claim 4 is characterized in that: p-nitrophenyl fluorone acid ethanol solution concentration is 5.0 * 10
-3Mol/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710052670A CN101082565B (en) | 2007-07-06 | 2007-07-06 | Novel finger print developing reagent and developing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710052670A CN101082565B (en) | 2007-07-06 | 2007-07-06 | Novel finger print developing reagent and developing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101082565A true CN101082565A (en) | 2007-12-05 |
| CN101082565B CN101082565B (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200710052670A Expired - Fee Related CN101082565B (en) | 2007-07-06 | 2007-07-06 | Novel finger print developing reagent and developing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115953A (en) * | 2010-12-07 | 2011-07-06 | 南京工业大学 | Electrostatic spinning nano-fiber film, and preparation method and finger detection method of electrostatic spinning nano-fiber film |
| CN104704062A (en) * | 2012-10-17 | 2015-06-10 | 和光纯药工业株式会社 | Novel compound, and method for measuring iron concentration by using novel compound as chelate color former |
| CN106865615A (en) * | 2017-02-14 | 2017-06-20 | 西南政法大学 | A kind of preparation of copper/chromium composite black nanometer powder and its finger mark process for show |
| CN112940531A (en) * | 2021-01-25 | 2021-06-11 | 浙江警察学院 | Environment-friendly powder capable of displaying on-site fingerprints |
-
2007
- 2007-07-06 CN CN200710052670A patent/CN101082565B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115953A (en) * | 2010-12-07 | 2011-07-06 | 南京工业大学 | Electrostatic spinning nano-fiber film, and preparation method and finger detection method of electrostatic spinning nano-fiber film |
| CN102115953B (en) * | 2010-12-07 | 2012-11-07 | 南京工业大学 | Electrostatic spinning nano-fiber film, and preparation method and finger detection method of electrostatic spinning nano-fiber film |
| CN104704062A (en) * | 2012-10-17 | 2015-06-10 | 和光纯药工业株式会社 | Novel compound, and method for measuring iron concentration by using novel compound as chelate color former |
| CN104704062B (en) * | 2012-10-17 | 2017-02-08 | 和光纯药工业株式会社 | Novel compound, and method for measuring iron concentration by using novel compound as chelate color former |
| CN106865615A (en) * | 2017-02-14 | 2017-06-20 | 西南政法大学 | A kind of preparation of copper/chromium composite black nanometer powder and its finger mark process for show |
| CN106865615B (en) * | 2017-02-14 | 2018-05-15 | 西南政法大学 | A kind of preparation of copper/chromium composite black nanometer powder and its finger mark process for show |
| CN112940531A (en) * | 2021-01-25 | 2021-06-11 | 浙江警察学院 | Environment-friendly powder capable of displaying on-site fingerprints |
| CN112940531B (en) * | 2021-01-25 | 2022-08-26 | 浙江警察学院 | Environment-friendly powder capable of displaying on-site fingerprints |
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| Publication number | Publication date |
|---|---|
| CN101082565B (en) | 2010-05-19 |
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