CN108414557A - A method of identifying turquoise using x-ray fluorescence power spectrum - Google Patents
A method of identifying turquoise using x-ray fluorescence power spectrum Download PDFInfo
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- CN108414557A CN108414557A CN201810215081.5A CN201810215081A CN108414557A CN 108414557 A CN108414557 A CN 108414557A CN 201810215081 A CN201810215081 A CN 201810215081A CN 108414557 A CN108414557 A CN 108414557A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/223—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/07—Investigating materials by wave or particle radiation secondary emission
- G01N2223/076—X-ray fluorescence
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/10—Different kinds of radiation or particles
- G01N2223/101—Different kinds of radiation or particles electromagnetic radiation
- G01N2223/1016—X-ray
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Abstract
The present invention provides a kind of methods for identifying turquoise using x-ray fluorescence power spectrum, are related to identification method field.This method includes：It takes the genuine piece of the turquoise of different colours that standard sample is made and the classification and content of chemical element in the turquoise of different colours is obtained using x-ray fluorescence spectroscopy analytical standard sample；It takes the turquoise genuine piece of multiple same colors to carry out x-ray fluorescence spectroscopy analysis, obtains the chemical element data of the turquoise of this color, establish the standard finger-print of the turquoise of this color；It takes turquoise sample preparation to be measured to obtain sample to be tested, sample to be tested is analyzed using x-ray fluorescence spectroscopy, obtains the x-ray fluorescence power spectrum of sample to be tested, then be compared with standard finger-print.This method can carry out qualitative and quantitative analysis, method high sensitivity can effectively differentiate the true and false, the quality of turquoise by the wavelength and intensity of the characteristic X-ray spectral line of measurement chemical element to the chemical composition of turquoise.
Description
Technical field
The present invention relates to identification method fields, and turquoise is identified using x-ray fluorescence power spectrum in particular to a kind of
Method.
Background technology
Turquoise, also known as " turquoise " are gained the name because of its " the likeness in form pinecone, the nearly pine of color are green ".Color is to influence turquoise quality
An important factor for., in many turquoises, porcelain pine is the prime quality in turquoise, is secondly green pine, iron wire pine knead dough pine.
The quality of turquoise it is soft it is fine and smooth, color is delicate and charming, hardness is moderate, is extremely suitable for carving, because element contained by it is different, color there is also
Difference.In blue when cupric in general oxide, in green when iron content.Wherein with color and luster it is soft, color is uniform, with blue, deep
Blue is opaque or sub-translucent, and the turquoise of no brown iron wire is top grade.
However, with the progress of synthetic technology and preferred process technology, occurs the synthesis of many likeness in form turquoises in the market
Product, this composite and the difference of natural turquoise are smaller and smaller so that use traditional Identification Tools and means, it is difficult to it
It is accurately distinguished.Such as the conventional tools such as microscope, refractometer are mainly the optical property and other objects by measuring mineral
Rationality matter distinguishes turquoise, however these properties and parameter can only also make qualitative qualification result, to optics or physical
The similar stone of matter cannot accomplish that fining is distinguished, this stone for just making a part be located at edge zone is difficult to identify the true and false, and
These identification methods are also difficult to identify the quality of turquoise quality.
Invention content
The purpose of the present invention is to provide a kind of method for identifying turquoise using x-ray fluorescence power spectrum, this method energy
Enough wavelength and intensity by measuring the characteristic X-ray spectral line of chemical element carry out the chemical composition of turquoise qualitative and fixed
Amount analysis, method high sensitivity can effectively differentiate the true and false, the quality of turquoise.
In order to realize that the above-mentioned purpose of the present invention, spy use following technical scheme：
A method of identifying turquoise using x-ray fluorescence power spectrum comprising：
(1) take the genuine piece of the turquoise of different colours that standard sample is made, using x-ray fluorescence spectroscopy analytical standard sample
Product obtain the classification and content of chemical element in the turquoise of different colours；
(2) it takes the turquoise genuine piece of multiple same colors to carry out x-ray fluorescence spectroscopy analysis, obtains the green of this color
The chemical element data of turquoise, establish the standard finger-print of the turquoise of this color；
(3) it takes turquoise sample preparation to be measured to obtain sample to be tested, sample to be tested is analyzed using x-ray fluorescence spectroscopy, is waited for
The x-ray fluorescence power spectrum of sample, then be compared with standard finger-print.
Compared with prior art, beneficial effects of the present invention for example including：
This method for identifying turquoise using x-ray fluorescence power spectrum provided by the invention, by measuring chemical element
The wavelength and intensity of characteristic X-ray spectral line carry out qualitative and quantitative analysis, to establish different face to the chemical composition of turquoise
The standard finger-print of the turquoise of color.When detecting sample to be tested, it is only necessary to by its x-ray fluorescence power spectrum with and its color it is close
The standard finger-print of turquoise be compared, the wavelength and intensity of main characteristic X-ray spectral line are observed, if both this
In rational deviation range, as certified products.The high sensitivity of the identification method can effectively differentiate the true and false, excellent of turquoise
It is bad.
Specific implementation mode
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.Reagents or instruments used without specified manufacturer is
The conventional products that can be obtained by commercially available purchase.
Present embodiment provides a kind of method for identifying turquoise using x-ray fluorescence power spectrum：
The principle of x-ray fluorescence spectroscopy is：The energy of the X-ray energy of irradiated atoms core and nuclear inner electron
In the same order of magnitude, transition occurs after the radiation energy of the inner electron RESONANCE ABSORPTION ray of core, and in internal layer electron orbit
On leave a hole, the hole of the outer-shell electron rebound lower state in upper state, by superfluous energy in the form of X-ray
It releases, generated X-ray is to represent the x-ray fluorescence spectral line of each element feature.Its energy is equal to atom inner-shell electron
Energy level difference, i.e. the specific electronics interlayer transition energy of atom.Therefore, the wavelength of x-ray fluorescence is feature to different elements.
The identification method includes：
Step (1)：It takes the genuine piece of the turquoise of different colours that standard sample is made, is analyzed using x-ray fluorescence spectroscopy
Standard sample obtains the classification and content of chemical element in the turquoise of different colours；
Further, in some embodiments, in the turquoise for obtaining different colours chemical element classification and content
Afterwards, further include determine again different colours turquoise in characteristic chemical element.
Particular analysis is carried out to the chemical composition in the turquoise of this kind of color, it, can by determining characteristic chemical element
Determine element composition representative in the turquoise of this color and content.
Further, the determination method of characteristic chemical element is：Choose content in the measurement result of same color turquoise
The characteristic chemical element of turquoise of at least two more chemical elements as this color.Preferably, characteristic chemical element
Including at least two in copper, iron, aluminium and phosphorus.
Further, the sample making course of turquoise includes：Part turquoise is crushed, take 3~5g (or for 3.3~
It is either 3.8~4.2g that 4.7g, which is either 3.6~4.4g) turquoise powder be pressed into a diameter of 45~50mm and (or be
46~49mm, or be 47~78mm) print.Preferably, sample surface is smooth, and thickness is that 0.5~1.5mm (or is 0.7
~1.3mm is either 0.8~1.2mm or is 0.9~1.1mm).The print of this size and thickness, turquoise powder point
It dissipating uniformly, translucency is good, after being irradiated by X-rays, even if the fluorescence generated can be detected by the detector if very faint, from
And when avoiding constituent content too low, spectral line interference is can't detect or occurred, the accuracy and sensitivity of analysis are helped to improve.
Step (2)：It takes the turquoise genuine piece of multiple same colors to carry out x-ray fluorescence spectroscopy analysis, obtains this face
The chemical element data of the turquoise of color, establish the standard finger-print of the turquoise of this color；
Since there is turquoise multiple color, the element composition and its content of the turquoise of each color to have larger difference
Not.A large amount of x-ray fluorescence spectroscopy is carried out by the turquoise to each color to analyze, and is based on statistical analysis, is obtained this
Element composition common in the turquoise of color, and after being overlapped processing to its x-ray fluorescence power spectrum, you can it obtains this
The standard finger-print of turquoise.
Further, further include determining this color again after the standard finger-print for the turquoise for obtaining same color
Turquoise characteristic chemical element content range.
The content range of the characteristic chemical element in turquoise by determining particular color, can be to the member of this kind of turquoise
Element composition carries out quantitative analysis, contributes to the accuracy for further increasing identification.
Step (3)：It takes turquoise sample preparation to be measured to obtain sample to be tested, sample to be tested is analyzed using x-ray fluorescence spectroscopy, is obtained
The x-ray fluorescence power spectrum of sample to be tested is obtained, then is compared with standard finger-print.
Further, further include measuring the chemical element content of sample to be tested, then judge that content is more in measurement result
Whether the content of at least two chemical elements is in the content range of the characteristic chemical element of same color turquoise.
Further, x-ray fluorescence spectroscopy analysis is carried out using x-ray fluorescence energy disperse spectroscopy, x-ray fluorescence energy disperse spectroscopy
Resolution ratio is less than 170eV, and more preferably, resolution ratio is 150~165eV, be either 153~162eV or be 157~
160eV, or be 158~159eV.
The feature and performance of the present invention are described in further detail with reference to embodiments：
Embodiment 1
The present embodiment provides a kind of method for identifying porcelain pine using x-ray fluorescence power spectrum, this method uses x-ray fluorescence energy
Spectrometer carries out, and the resolution ratio of the x-ray fluorescence energy disperse spectroscopy is 157~160eV.
This method includes：
(1) sample preparation：Part porcelain pine genuine piece or turquoise to be measured are crushed, 5g powder is taken to be pressed into the print of surfacing,
A diameter of 45~47mm, thickness are 0.8~1.0mm, and standard sample and sample to be tested is made.
(2) standard sample for taking porcelain pine obtains chemistry member in porcelain pine using x-ray fluorescence spectroscopy analytical standard sample
The classification and content of element；
(3) it takes multiple porcelain pine genuine pieces to carry out x-ray fluorescence spectroscopy analysis, obtains the chemical element data of porcelain pine, establish
The standard finger-print of porcelain pine；
(4) sample to be tested is taken, sample to be tested is analyzed using x-ray fluorescence spectroscopy, obtains the x-ray fluorescence of sample to be tested
Power spectrum, then be compared with standard finger-print.
The x-ray fluorescence power spectrum of the sample to be tested is more than 98% with standard finger-print similarity, you can concludes that this is to be measured
Sample is the certified products of porcelain pine.
Embodiment 2
The present embodiment provides a kind of method for identifying porcelain pine using x-ray fluorescence power spectrum, this method uses x-ray fluorescence energy
Spectrometer carries out, and the resolution ratio of the x-ray fluorescence energy disperse spectroscopy is 157~160eV.
This method includes：
(1) sample preparation：Part porcelain pine genuine piece or turquoise to be measured are crushed, 3g powder is taken to be pressed into the print of surfacing,
A diameter of 48~50mm, thickness are 0.5~0.7mm, and standard sample and sample to be tested is made.
(2) standard sample for taking porcelain pine obtains chemistry member in porcelain pine using x-ray fluorescence spectroscopy analytical standard sample
The classification and content of element, then determine the characteristic chemical element in porcelain pine, as copper and phosphorus.
(3) it takes multiple porcelain pine genuine pieces to carry out x-ray fluorescence spectroscopy analysis, obtains the chemical element data of porcelain pine, establish
The standard finger-print of porcelain pine, and determine the content range of characteristic chemical element, i.e., the content of copper is 3.72~6.14%, phosphorus
Content is 4.13~7.09%.
(4) sample to be tested is taken, sample to be tested is analyzed using x-ray fluorescence spectroscopy, obtains the x-ray fluorescence of sample to be tested
Power spectrum and the content of copper, phosphorus are respectively 3.81% and 6.12%, then are compared with standard finger-print.
The x-ray fluorescence power spectrum of the sample to be tested is more than 96%, and wherein copper and phosphorus member with standard finger-print similarity
The content of element is in above-mentioned content range, you can concludes that the sample to be tested is the certified products of porcelain pine.
Embodiment 3
The present embodiment provides a kind of method for identifying green pine using x-ray fluorescence power spectrum, this method uses x-ray fluorescence energy
Spectrometer carries out, and the resolution ratio of the x-ray fluorescence energy disperse spectroscopy is 150~155eV.
This method includes：
(1) sample preparation：The green loose genuine piece in part or turquoise to be measured are crushed, 4g powder is taken to be pressed into the print of surfacing,
A diameter of 45~47mm, thickness are 0.7~1.0mm, and standard sample and sample to be tested is made.
(2) standard sample for taking green pine obtains chemistry member in green pine using x-ray fluorescence spectroscopy analytical standard sample
The classification and content of element, then determine the characteristic chemical element in green pine, as copper and iron.
(3) it takes multiple green loose genuine pieces to carry out x-ray fluorescence spectroscopy analysis, obtains the chemical element data of green pine, establish
The standard finger-print of green pine, and determine the content range of characteristic chemical element, i.e., the content of copper is 3.02~4.15%, iron
Content is 2.17~3.24%.
(4) sample to be tested is taken, sample to be tested is analyzed using x-ray fluorescence spectroscopy, obtains the x-ray fluorescence of sample to be tested
Power spectrum and the content of copper, iron are respectively 3.17% and 2.43%, then are compared with standard finger-print.
The x-ray fluorescence power spectrum of the sample to be tested is more than 95%, and wherein copper and iron member with standard finger-print similarity
The content of element is in above-mentioned content range, you can concludes that the sample to be tested is the certified products of green pine.
Embodiment 4
The present embodiment provides a kind of method for identifying iron wire pine using x-ray fluorescence power spectrum, this method uses x-ray fluorescence
Energy disperse spectroscopy carries out, and the resolution ratio of the x-ray fluorescence energy disperse spectroscopy is 150~155eV.
This method includes：
(1) sample preparation：Part iron wire pine genuine piece or turquoise to be measured are crushed, 4g powder is taken to be pressed into the sample of surfacing
Piece, a diameter of 48~50mm, thickness are 1.2~1.4mm, and standard sample and sample to be tested is made.
(2) standard sample for taking iron wire pine obtains changing in iron wire pine using x-ray fluorescence spectroscopy analytical standard sample
The classification and content of element are learned, then determines the characteristic chemical element in iron wire pine, as copper, aluminium and iron.
(3) it takes multiple iron wire pine genuine pieces to carry out x-ray fluorescence spectroscopy analysis, obtains the chemical element data of iron wire pine,
Establish the standard finger-print of iron wire pine, and determine the content range of characteristic chemical element, i.e., the content of copper be 4.27~
5.49%, the content of aluminium is 2.64~4.05%, and the content of iron is 1.27~2.83%.
(4) sample to be tested is taken, sample to be tested is analyzed using x-ray fluorescence spectroscopy, obtains the x-ray fluorescence of sample to be tested
Power spectrum and copper, aluminium, iron content be respectively 4.37% and 2.79%, then be compared with standard finger-print.
The x-ray fluorescence power spectrum of the sample to be tested is more than 95%, and wherein copper, aluminium and iron with standard finger-print similarity
The content of element is in above-mentioned content range, you can concludes that the sample to be tested is the certified products of iron wire pine.
To sum up, this method for identifying turquoise using x-ray fluorescence power spectrum that present embodiment provides, by measurementization
The wavelength and intensity for learning the characteristic X-ray spectral line of element carry out qualitative and quantitative analysis, to build to the chemical composition of turquoise
The standard finger-print of the turquoise of vertical different colours.When detecting sample to be tested, it is only necessary to by its x-ray fluorescence power spectrum with and it
The standard finger-print of turquoise similar in color is compared, and observes the wavelength and intensity of main characteristic X-ray spectral line, such as
Fruit this both in rational deviation range, as certified products.The high sensitivity of the identification method can effectively differentiate turquoise
The true and false, quality.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that without departing substantially from the present invention's
Many other change and modification can be made in the case of spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (9)
1. a kind of method for identifying turquoise using x-ray fluorescence power spectrum, which is characterized in that it includes：
(1) it takes the genuine piece of the turquoise of different colours that standard sample is made, the standard sample is analyzed using x-ray fluorescence spectroscopy
Product obtain the classification and content of chemical element in the turquoise of different colours；
(2) it takes the turquoise genuine piece of multiple same colors to carry out x-ray fluorescence spectroscopy analysis, obtains the described green of this color
The chemical element data of turquoise establish the standard finger-print of the turquoise of this color；
(3) it takes turquoise sample preparation to be measured to obtain sample to be tested, the sample to be tested is analyzed using x-ray fluorescence spectroscopy, obtains institute
The x-ray fluorescence power spectrum of sample to be tested is stated, then is compared with the standard finger-print.
2. the method according to claim 1 for identifying turquoise using x-ray fluorescence power spectrum, which is characterized in that step (1)
In, further include determining different colours again in the turquoise for obtaining different colours after the classification and content of chemical element
Characteristic chemical element in turquoise.
3. the method according to claim 2 for identifying turquoise using x-ray fluorescence power spectrum, which is characterized in that the spy
Sign chemical element determination method be：Choose at least two more chemistry members of content in the measurement result of same color turquoise
Characteristic chemical element of the element as the turquoise of this color.
4. the method according to claim 2 for identifying turquoise using x-ray fluorescence power spectrum, which is characterized in that step (2)
In, further include the green pine for determining this color again after obtaining the standard finger-print of the turquoise of same color
The content range of the characteristic chemical element of stone.
5. the method according to claim 4 for identifying turquoise using x-ray fluorescence power spectrum, which is characterized in that step (3)
In, further include measuring the chemical element content of the sample to be tested, then judge at least two changes that content is more in measurement result
The content of element is learned whether in the content range of the characteristic chemical element of same color turquoise.
6. the method according to claim 1 for identifying turquoise using x-ray fluorescence power spectrum, which is characterized in that described green
The sample making course of turquoise includes：Part turquoise is crushed, 3~5g turquoise powder is taken to be pressed into the sample of a diameter of 45~50mm
Piece.
7. the method according to claim 6 for identifying turquoise using x-ray fluorescence power spectrum, which is characterized in that the sample
Piece surfacing, thickness are 0.5~1.5mm.
8. the method according to claim 2 for identifying turquoise using x-ray fluorescence power spectrum, which is characterized in that the spy
Sign chemical element includes at least two in copper, iron, aluminium and phosphorus.
9. the method according to claim 2 for identifying turquoise using x-ray fluorescence power spectrum, which is characterized in that the X is penetrated
The analysis of line fluorescence spectroscopy method is carried out using x-ray fluorescence energy disperse spectroscopy, and the resolution ratio of the x-ray fluorescence energy disperse spectroscopy is less than 170eV.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110779943A (en) * | 2019-10-23 | 2020-02-11 | 长春黄金研究院有限公司 | Identification method for dyeing natural turquoise |
| CN111912870A (en) * | 2020-06-22 | 2020-11-10 | 中国农业科学院农业资源与农业区划研究所 | Method for identifying authenticity of chemical fertilizer by using X-ray diffractometer |
| CN113466168A (en) * | 2021-04-28 | 2021-10-01 | 中国地质大学（武汉） | Method and medium for analyzing boulder gemmology characteristics, computer equipment and application |
-
2018
- 2018-03-15 CN CN201810215081.5A patent/CN108414557A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110779943A (en) * | 2019-10-23 | 2020-02-11 | 长春黄金研究院有限公司 | Identification method for dyeing natural turquoise |
| CN111912870A (en) * | 2020-06-22 | 2020-11-10 | 中国农业科学院农业资源与农业区划研究所 | Method for identifying authenticity of chemical fertilizer by using X-ray diffractometer |
| CN113466168A (en) * | 2021-04-28 | 2021-10-01 | 中国地质大学（武汉） | Method and medium for analyzing boulder gemmology characteristics, computer equipment and application |
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