CN114136446B - Sapphire color-graded liquid standard sample and preparation method thereof - Google Patents
Sapphire color-graded liquid standard sample and preparation method thereof Download PDFInfo
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- CN114136446B CN114136446B CN202111422926.6A CN202111422926A CN114136446B CN 114136446 B CN114136446 B CN 114136446B CN 202111422926 A CN202111422926 A CN 202111422926A CN 114136446 B CN114136446 B CN 114136446B
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- G—PHYSICS
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- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/87—Investigating jewels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N2001/2893—Preparing calibration standards
Abstract
The invention discloses a liquid standard sample for sapphire color grading and a preparation method thereof, belongs to the technical field of sapphire grading, and is used for solving the problems that sapphire real object standard samples are seriously insufficient in quantity and cannot meet the requirement that a plurality of jewelry detection mechanisms simultaneously carry out sapphire grading work. The dark blue standard liquid comprises, by concentration percentage, 0-0.2 of a red stock solution, 4-10 of a blue stock solution and 0-0.1 of a yellow stock solution; the brilliant blue standard liquid comprises, by concentration, 0-0.2% of a red stock solution, 2-3% of a blue stock solution and 0-0.1% of a yellow stock solution; the components of the thick blue standard liquid comprise, by concentration percentage, 0-0.2 of red stock solution, 1-2 of blue stock solution and 0-0.1 of yellow stock solution; the blue standard liquid comprises, by concentration percentage, 0-0.2 of a red stock solution, 0.1-0.9 of a blue stock solution and 0-0.1 of a yellow stock solution; the light blue standard liquid comprises, by concentration percentage, 0-0.2% of red stock solution, 0.01-0.09% of blue stock solution and 0-0.1% of yellow stock solution. The liquid standard sample and the preparation method thereof can be used for sapphire color grading.
Description
Technical Field
The invention relates to the technical field of sapphire grading, in particular to a liquid standard sample for sapphire color grading and a preparation method thereof.
Background
At present, the number of sapphire sample standard samples in China is very small, and only 5 sets of sapphire sample standard samples are available.
The number of sapphire standard samples cannot guarantee that a plurality of jewelry testing organizations in China develop related gem grading business.
Disclosure of Invention
In view of the above analysis, the present invention aims to provide a liquid standard sample for sapphire color grading and a preparation method thereof, so as to solve the problems that the number of sapphire standard samples is seriously insufficient and cannot meet the requirement of a plurality of jewelry testing institutions for carrying out sapphire grading work.
The purpose of the invention is mainly realized by the following technical scheme:
the invention provides a sapphire color grading liquid standard sample which comprises a deep blue standard liquid, a brilliant blue standard liquid, a thick blue standard liquid, a blue standard liquid and a light blue standard liquid, wherein the components of the deep blue standard liquid, the brilliant blue standard liquid, the thick blue standard liquid, the blue standard liquid and the light blue standard liquid respectively comprise a red stock solution, a blue stock solution and a yellow stock solution, the components of the deep blue standard liquid comprise 0-0.2 percent of the red stock solution, 4-10 percent of the blue stock solution and 0-0.1 percent of the yellow stock solution according to concentration percentage, and the balance is water; the brilliant blue standard liquid comprises, by concentration, 0-0.2% of red stock solution, 2-3% of blue stock solution, 0-0.1% of yellow stock solution and the balance of water; the components of the thick blue standard liquid comprise, by concentration percentage, 0-0.2 of red stock solution, 1-2 of blue stock solution, 0-0.1 of yellow stock solution and the balance of water; the blue standard liquid comprises, by concentration percentage, 0-0.2 of a red stock solution, 0.1-0.9 of a blue stock solution, 0-0.1 of a yellow stock solution, and the balance of water; the light blue standard liquid comprises, by concentration percentage, 0-0.2% of red stock solution, 0.01-0.09% of blue stock solution, 0-0.1% of yellow stock solution and the balance of water.
Further, the components of the dark blue standard liquid comprise, by concentration percentage, 0.1 of a red stock solution, 4 of a blue stock solution, 0.07 of a yellow stock solution, and the balance of water; the components of the brilliant blue standard liquid comprise, by concentration percentage, 0.1 of red stock solution, 3 of blue stock solution and 0.06 of yellow stock solution, and the balance of water; the components of the concentrated blue standard liquid comprise, by concentration percentage, 0.1 of red stock solution, 2 of blue stock solution and 0.05 of yellow stock solution, and the balance of water; the blue standard liquid comprises, by concentration percentage, 0.05 of red stock solution, 0.5 of blue stock solution, 0.03 of yellow stock solution and the balance of water; the light blue standard liquid comprises the components of red stock solution 0, blue stock solution 0.05 and yellow stock solution 0 in percentage by concentration, and the balance of water.
Further, the components of the dark blue standard liquid, the brilliant blue standard liquid, the thick blue standard liquid, the blue standard liquid and the light blue standard liquid also comprise a mixed color stock solution, wherein the mixed color stock solution can be a green stock solution, the components of the dark blue standard liquid comprise 0.1 percent of red stock solution, 3.95 percent of blue stock solution, 0.02 percent of yellow stock solution and 0.10 percent of green stock solution according to concentration percentage, and the balance is water; the components of the brilliant blue standard liquid comprise, by concentration percentage, 0.1 of red stock solution, 2.96 of blue stock solution, 0.02 of yellow stock solution, 0.08 of green stock solution and the balance of water; the components of the concentrated blue standard liquid comprise, by concentration percentage, 0.1 of red stock solution, 1.97 of blue stock solution, 0.02 of yellow stock solution, 0.06 of green stock solution and the balance of water; the blue standard liquid comprises, by concentration percentage, 0.05 of red stock solution, 0.48 of blue stock solution, 0.01 of yellow stock solution, 0.04 of green stock solution and the balance of water; the light blue standard liquid comprises the components of red stock solution 0, blue stock solution 0.05, yellow stock solution 0 and green stock solution 0 in percentage by concentration, and the balance of water.
Further, replacing yellow stock solution with mixed color stock solution, wherein the mixed color stock solution can be black stock solution, the dark blue standard solution comprises, by concentration percentage, 0.03 of red stock solution, 3.93 of blue stock solution, 0.21 of black stock solution, and the balance of water; the components of the brilliant blue standard liquid comprise, by concentration percentage, 0.04 percent of red stock solution, 2.94 percent of blue stock solution, 0.18 percent of black stock solution and the balance of water; the components of the concentrated blue standard liquid comprise, by concentration percentage, 0.05 of red stock solution, 1.95 of blue stock solution and 0.15 of black stock solution, and the balance of water; the blue standard liquid comprises, by concentration percentage, 0.02 of a red stock solution, 0.47 of a blue stock solution, 0.09 of a black stock solution, and the balance of water; the light blue standard liquid comprises the components of red stock solution 0, blue stock solution 0.05 and black stock solution 0 in percentage by concentration, and the balance of water.
Further, the red stock solution, the blue stock solution and the yellow stock solution are printer inks.
Further, the liquid standard sample for sapphire color grading also comprises liquid containers for respectively containing a deep blue standard liquid, a brilliant blue standard liquid, a thick blue standard liquid, a blue standard liquid and a light blue standard liquid.
Further, the material of the liquid container is selected from a quartz glass bottle.
Further, the optical path of the liquid container may be 1 to 10mm, preferably 5 mm.
Further, the wall thickness of the liquid container is 1-2 mm, preferably 1.25 mm.
Further, the outer dimensions of the liquid container were 55mm × 12.5mm × 7.5mm, and the wall thickness of the liquid container was 1.25 mm.
Further, the liquid container is a hollow quartz glass bottle which is consistent with the shape of the natural object standard sample.
Further, liquid container includes body and sealed lid, and sealed lid and body threaded connection are equipped with the sealing member between sealed lid and the body, realize liquid container's sealed through the sealing member.
Further, the bottle body is provided with a bottle opening, the sealing element is a gasket, and the sealing cover and the bottle opening are sealed through the gasket.
Further, the gasket is made of epoxy resin.
Further, the top end face of the bottle opening is provided with an annular groove, the size of the gasket is matched with the size of the groove, the gasket can be installed in the annular groove and is in contact with the side wall of the annular groove, the inner wall of the sealing cover is convexly provided with a blade ring, the blade ring and the inner wall of the sealing cover are integrally formed, and the diameter of the blade ring is larger than the inner diameter of the gasket and smaller than the outer diameter of the gasket.
The invention also provides a preparation method of the sapphire color graded liquid standard sample, which is used for preparing the sapphire color graded liquid standard sample and comprises the following steps:
step 1: providing a plurality of volumetric flasks with covers, and respectively filling water into the volumetric flasks;
step 2: adding the red stock solution into a first volumetric flask, fully stirring and standing to obtain a red stock solution aqueous solution;
adding the blue stock solution into a second volumetric flask, fully stirring and standing to obtain a blue stock solution aqueous solution;
adding the yellow stock solution into a third volumetric flask, fully stirring and standing to obtain a yellow stock solution aqueous solution;
and step 3: taking part of the red stock solution aqueous solution from the first volumetric flask by using a pipettor, adding the red stock solution aqueous solution into a fourth volumetric flask, diluting the red stock solution aqueous solution to the red stock solution concentration required by the standard liquid ratio, fully stirring the red stock solution and standing the red stock solution to obtain a diluted red stock solution; wherein, the concentration of the stock solution required by fully diluting to be close to the solution proportion can reduce single error caused by pipette system error and experimental operation;
taking part of the blue stock solution aqueous solution from the second volumetric flask by using a pipettor, adding the blue stock solution aqueous solution into a fifth volumetric flask, fully stirring, and standing to obtain a diluted blue stock solution aqueous solution;
taking part of the yellow stock solution from the third volumetric flask by using a pipettor, adding the yellow stock solution into a sixth volumetric flask, fully stirring, and standing to obtain a diluted yellow stock solution;
taking part of the diluted blue stock solution from the fifth volumetric flask by using a pipettor, adding the blue stock solution into a seventh volumetric flask, fully stirring, and standing to obtain a blue stock solution after standing;
and 4, step 4: taking a part of diluted red stock solution from a fourth volumetric flask, a part of diluted blue stock solution from a second volumetric flask and a part of diluted yellow stock solution from a sixth volumetric flask respectively by using a pipettor according to the components of the dark blue standard liquid, mixing, diluting to a mixed liquid with a required volume, and fully stirring to obtain the dark blue standard liquid;
taking a part of diluted red stock solution from a fourth volumetric flask, a part of blue stock solution from a second volumetric flask and a part of diluted yellow stock solution from a sixth volumetric flask respectively by using a pipettor according to the components of the brilliant blue standard liquid, mixing, diluting to a mixed liquid with a required volume, and fully stirring to obtain the brilliant blue standard liquid;
according to the components of the thick blue standard liquid, respectively taking a part of diluted red stock solution from a fourth volumetric flask, a part of blue stock solution from a second volumetric flask and a part of diluted yellow stock solution from a sixth volumetric flask by using a pipettor, mixing, diluting to a mixed liquid with a required volume, and fully stirring to obtain the thick blue standard liquid;
taking a part of diluted red stock solution from the fourth volumetric flask, a part of diluted blue stock solution from the fifth volumetric flask and a part of diluted yellow stock solution from the sixth volumetric flask by a pipette according to the components of the blue standard liquid, respectively mixing, diluting to a required volume of mixed liquid, and fully stirring to obtain the blue standard liquid;
and taking part of the blue stock solution water solution after standing from the seventh volumetric flask by using a liquid transfer device according to the components of the light blue standard liquid to obtain the light blue standard liquid.
Further, in each step, the standing time is 0.5-1.5 h (for example, 1 h).
Further, in the above method for preparing a sapphire color-graded liquid standard sample, before step 1, the following steps are also included:
and cleaning the volumetric flask, and naturally drying or drying in an oven.
Compared with the prior art, the invention has at least one of the following beneficial effects:
A) the liquid standard sample for sapphire color grading provided by the invention can respectively obtain standard liquids with different colors (deep blue, brilliant blue, thick blue, blue and light blue) by adopting three color stock solutions (red stock solution, blue stock solution and yellow stock solution) and limiting different proportions. The color stock solution of the sapphire color-graded liquid standard sample is stable in acquisition source and easy to obtain, batch production can be realized only by preparing according to a standard proportion, the stability and consistency of the liquid standard sample can meet the constant value requirement of the standard sample, the sapphire color-graded liquid standard sample can be directly used according to national standards, is simple and convenient to operate, low in production cost and convenient to carry, and can realize quick batch production to meet market demands, so that the current situation that various sapphire color material object standard samples cannot be copied and are insufficient in quantity is solved.
B) The liquid standard sample for sapphire color grading provided by the invention has the advantages of simple replication, short preparation period, good sample consistency, low cost price, convenience in carrying, capability of batch production and the like.
C) The liquid standard sample for sapphire color grading provided by the invention also has the following advantages: the preparation raw material is liquid pigment, so that the stability is good and the preparation method is easy to obtain; the color ratio after the test comparison and confirmation can be completed by only according to the operation instruction; the manufacturing cost of each sample is only hundreds of yuan, the batch production price has reduced space, and the price advantage is obvious compared with that of a natural gem sample; selecting a three-dimensional container with the thickness closest to that of the natural gem standard sample, wherein the three-dimensional container is not like a color card which only has surface color, and the liquid standard sample has reflection color and transmission color and is closer to the three-dimensional structure of the natural gem standard sample; the liquid container is a quartz bottle with the refractive index of 1.55, has gem gloss and is more similar to the color of other materials and matrixes; the quartz bottles with fixed specifications are placed in special containing boxes, so that the quartz bottles are convenient to carry, and need not be reported to customs departments for registration like gem samples even if the quartz bottles are carried out and entered.
In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a graph comparing a DB sample (deep sapphire liquid standard) with a natural sapphire deep sapphire standard in an example of the present invention;
FIG. 2 is a diagram showing the comparison between VB samples (bright sapphire liquid standard samples) and natural sapphire bright sapphire standard samples in an example of the present invention;
FIG. 3 is a graph comparing IB samples (concentrated sapphire liquid standards) with natural sapphire concentrated sapphire standards in accordance with an example of the present invention;
FIG. 4 is a graph comparing a sample B (blue liquid standard) with a natural sapphire blue standard in an example of the present invention;
FIG. 5 is a graph comparing an LB sample (light sapphire liquid standard) with a natural sapphire light sapphire standard in examples of the present invention;
FIG. 6 is an exploded view of a liquid container in an embodiment of the present invention;
FIG. 7 is a sectional view showing a sealing structure of a bottle mouth of a liquid container according to an embodiment of the present invention (a sealing cover is not completely tightened);
FIG. 8 is a schematic view of a sealing cap of a liquid container according to an embodiment of the present invention;
FIG. 9 is a schematic view showing a structure of a gasket of the liquid container according to the embodiment of the present invention;
FIG. 10 is a flowchart showing the determination of the composition of each standard liquid in the method for preparing a sapphire color-graded liquid standard sample according to an embodiment of the present invention;
FIG. 11 is a graph showing 6 UV-VIS absorption spectra in the visible range for 6 months for an LB sample (light blue liquid standard) according to the example of the present invention.
Reference numerals:
1. a bottle body; 2. a sealing cover; 3. a gasket; 4. an annular groove; 5. a blade ring; 6. and (4) annular cutting grooves.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
The sapphire color grading standard sample (national standard sample number and batch number: GSB 01-3538-. The standard samples are natural gemstone standard samples, the number of the natural gemstone standard samples is seriously insufficient, the copying difficulty is huge, the copies of the natural gemstone standard samples cannot be rapidly produced in batches, the copying work cost and the transportation cost are high, and the huge market requirements of gemstone color grading are difficult to meet.
The invention provides a liquid standard sample for sapphire color grading, which comprises a deep blue standard liquid, a brilliant blue standard liquid, a thick blue standard liquid, a blue standard liquid and a light blue standard liquid, wherein the components of the deep blue standard liquid, the brilliant blue standard liquid, the thick blue standard liquid, the blue standard liquid and the light blue standard liquid respectively comprise a red stock solution, a blue stock solution and a yellow stock solution, and the liquid standard sample is prepared from stock solutions with three colors (namely the red stock solution, the blue stock solution and the yellow stock solution).
Illustratively, the components of the deep blue standard liquid comprise, in concentration percentage, 0-0.2 of a red stock solution, 4-10 of a blue stock solution and 0-0.1 of a yellow stock solution, and the balance of water (e.g., deionized water); the brilliant blue standard liquid comprises, by concentration, 0-0.2% of a red stock solution, 2-3% of a blue stock solution, 0-0.1% of a yellow stock solution, and the balance of water (e.g., deionized water); the components of the concentrated blue standard liquid comprise, by concentration percentage, 0-0.2 of a red stock solution, 1-2 of a blue stock solution, 0-0.1 of a yellow stock solution, and the balance of water (for example, deionized water); the blue standard liquid comprises, by concentration percentage, 0-0.2 of a red stock solution, 0.1-0.9 of a blue stock solution, 0-0.1 of a yellow stock solution, and the balance of water (for example, deionized water); the light blue standard liquid comprises, by concentration percentage, 0-0.2% of a red stock solution, 0.01-0.09% of a blue stock solution, 0-0.1% of a yellow stock solution, and the balance of water (for example, deionized water).
The three primary colors of color, namely red, yellow and blue, are the three most basic colors. Red plus blue will turn purple; the color of yellow and blue are changed into green; red plus yellow will turn orange. Any color in the world can be formed by combining the three colors according to different proportions.
Compared with the prior art, the liquid standard sample for sapphire color grading provided by the invention can respectively obtain standard liquids with different colors (deep blue, brilliant blue, thick blue, blue and light blue) by adopting three color stock solutions (red stock solution, blue stock solution and yellow stock solution) and limiting different proportions. The color stock solution of the sapphire color-graded liquid standard sample is stable in acquisition source and easy to obtain, batch production can be realized only by preparing according to a standard proportion, the stability and consistency of the liquid standard sample can meet the constant value requirement of the standard sample, the sapphire color-graded liquid standard sample can be directly used according to national standards, is simple and convenient to operate and low in production cost, and can meet the production and market requirements, so that the current situation that various sapphire color material object standard samples cannot be copied and are seriously insufficient in quantity is solved.
The above-mentioned blue standard liquid is not a generic concept of a deep blue standard liquid, a brilliant blue standard liquid, a thick blue standard liquid, and a light blue standard liquid, but a parallel concept, and in the field of sapphire color classification technology, blue is a color lighter than a brilliant blue color.
Illustratively, the components of the deep blue standard liquid include, in concentration percentages, a red stock solution 0.1, a blue stock solution 4, and a yellow stock solution 0.07, with the balance being water (e.g., deionized water); the components of the brilliant blue standard liquid comprise, by concentration percentage, 0.1 of red stock solution, 3 of blue stock solution and 0.06 of yellow stock solution, and the balance of water (for example, deionized water); the components of the concentrated blue standard liquid comprise, by concentration percentage, 0.1 of red stock solution, 2 of blue stock solution and 0.05 of yellow stock solution, and the balance of water (for example, deionized water); the blue standard liquid comprises the components of 0.05 percent of red stock solution, 0.5 percent of blue stock solution and 0.03 percent of yellow stock solution in percentage by concentration, and the balance of water (for example, deionized water); the composition of the light blue standard liquid comprises, in concentration percent, red stock solution 0, blue stock solution 0.05, and yellow stock solution 0, with the balance being water (e.g., deionized water).
It should be noted that red, yellow and blue are three primary colors, and any other color can be mixed by using the three colors, for example, yellow mixed with blue can obtain green, so the components of the above dark blue standard liquid, bright blue standard liquid, dark blue standard liquid, blue standard liquid and light blue standard liquid also include a mixed color stock solution, and exemplarily, the mixed color stock solution may be a green stock solution, and the following components may also be selected: the components of the dark blue standard liquid comprise, by concentration percentage, 0.1 of red stock solution, 3.95 of blue stock solution, 0.02 of yellow stock solution and 0.10 of green stock solution, and the balance of water (for example, deionized water); the components of the brilliant blue standard liquid comprise, by concentration percentage, 0.1 of red stock solution, 2.96 of blue stock solution, 0.02 of yellow stock solution and 0.08 of green stock solution, and the balance of water (for example, deionized water); the components of the concentrated blue standard liquid comprise, by concentration percentage, 0.1 of red stock solution, 1.97 of blue stock solution, 0.02 of yellow stock solution and 0.06 of green stock solution, and the balance of water (for example, deionized water); the blue standard liquid comprises, by concentration percentage, 0.05 red stock solution, 0.48 blue stock solution, 0.01 yellow stock solution, 0.04 green stock solution, and the balance of water (e.g., deionized water); the light blue standard liquid comprises, in concentration percentage, red stock solution 0, blue stock solution 0.05, yellow stock solution 0 and green stock solution 0, and the balance of water (e.g., deionized water).
Or, the mixed color stock solution can be used to replace the yellow stock solution, the mixed color stock solution can be a black stock solution, and the following components can be selected: the components of the dark blue standard liquid comprise, by concentration percentage, 0.03 red stock solution, 3.93 blue stock solution and 0.21 black stock solution, and the balance of water (for example, deionized water); the components of the brilliant blue standard liquid comprise, by concentration percentage, 0.04 percent of red stock solution, 2.94 percent of blue stock solution and 0.18 percent of black stock solution, and the balance of water (for example, deionized water); the components of the concentrated blue standard liquid comprise, by concentration percentage, 0.05 of red stock solution, 1.95 of blue stock solution and 0.15 of black stock solution, and the balance of water (for example, deionized water); the components of the blue standard liquid comprise, by concentration percentage, 0.02 red stock solution, 0.47 blue stock solution and 0.09 black stock solution, and the balance of water (for example, deionized water); the composition of the light blue standard liquid comprises, in concentration percentage, red stock solution 0, blue stock solution 0.05 and black stock solution 0, with the balance being water (e.g., deionized water).
In selecting the stock solution, not only the color stability of the obtained liquid standard sample in a certain time range but also the stability of the supply chain and the price need to be considered, and illustratively, the red stock solution, the blue stock solution and the yellow stock solution can be printer inks, that is, the red stock solution is a magenta printer ink, the blue stock solution is a cyan printer ink, and the yellow stock solution is a yellow printer ink. The design principle of the printer ink conforms to the three primary colors theory, any color can be obtained through calculation and blending theory, and a plurality of manufacturers and brands (such as Epson, Hewlett packard and the like) for producing the printer ink on the market are stable, so that the printer ink is easily obtained from domestic or imported raw materials, and the color stability of the obtained liquid standard sample in a certain time range can be ensured. The effect achieved by adopting the printer ink is difficult to achieve by adopting other pigments, for example, the original liquid adopts mineral pigments for drawing, the obtained liquid shows turbid appearance after being prepared into liquid, the transparency is poor, precipitates can be formed after long-term standing, and the phenomenon of water-emulsion separation occurs, so that the printer ink has remarkable advantages.
It is to be understood that the above-described sapphire color-graded liquid standard sample further includes liquid containers for respectively holding a deep-blue standard liquid, a brilliant-blue standard liquid, a thick-blue standard liquid, a blue standard liquid, and a light-blue standard liquid.
In the selection of the liquid container, it is necessary to consider various properties of the liquid container, such as chemical stability, physical stability, surface strength, light transmittance, and sealing property, and for example, a quartz glass bottle may be selected as the liquid container, because the quartz glass liquid container has better stability and transmittance than a liquid container made of ordinary glass, and is more favorable for containing and observing colors of various standard liquids.
Considering that the optical path of the liquid container also affects the final color of each standard liquid, the optical path of the liquid container may be 1-10 mm. In order to make the color of the liquid standard sample closer to that of the physical standard sample, the optical path of the liquid container is 5 mm. This is because the thickness of the physical standard sample (physical sapphire) is usually about 5mm, and in practical applications, a professional skilled in color grading of gems finds that selecting a liquid container with an optical path of 5mm can be closer to the physical standard sample by comparing the comfort of each thickness.
The optical path of the liquid container is 5mm, and it can also be understood that the inner wall of the liquid container defines the thickness of the liquid standard sample as 5 mm. For convenience of explanation, it is specified that the opening of the liquid container faces upward to be in a state of being upright, and the main body part of the liquid container is in a rectangular parallelepiped structure except for the opening end of the liquid container, the projection of the cross section of the main body part of the liquid container on a horizontal plane is a rectangular ring, the rectangular ring has an inner rectangle and an outer rectangle, the length of a first side of the inner rectangle is 5mm, and the length of a second side is not less than 5 mm.
Considering that the wall thickness of the liquid container also influences the final color effect presented by the standard liquid sample, the wall thickness of the liquid container is 1-2 mm, preferably 1.25 mm. Illustratively, a liquid container with an optical path of 5mm has external dimensions (height x width x thickness) of 55mm x 12.5mm x 7.5mm, and a wall thickness of 1.25 mm; accordingly, the inner wall of the main body of the liquid container has a first side length of 5mm and a second side length of 10 mm.
In addition, in the selection of the liquid container, a hollow quartz glass bottle conforming to the shape of a natural material standard sample (i.e., a material sapphire) may be selected as the liquid container.
In order to facilitate the encapsulation, liquid container includes body 1 and sealed lid 2, and sealed lid 2 and body 1 threaded connection are equipped with the sealing member between sealed lid 2 and the body 1, realizes liquid container's sealed through twisting sealed lid 2 extrusion sealing member. Illustratively, the bottle body 1 has a bottle mouth, the sealing element is a gasket 3, the sealing cover 2 is sealed with the bottle mouth through the gasket 3, and the gasket 3 is made of soft material with certain elasticity, such as a rubber gasket 3.
The stability of the liquid standard sample is related to the printer ink used for the stock solution on one hand and the sealing performance of the liquid container on the other hand. In an alternative embodiment of the present invention, referring to fig. 6 to 9, an annular groove 4 is provided on the top end surface of the bottle mouth, the wall thickness of the bottle mouth section is greater than the wall thickness of the bottle body 1, the gasket 3 is of an O-shaped structure, the size of the gasket 3 matches the size of the groove, the gasket 3 can be placed in the annular groove 4 and contacts with the side wall of the annular groove 4, a blade ring 5 is convexly provided on the inner wall of the sealing cover 2, the blade ring 5 is integrally formed with the inner wall of the sealing cover 2, and the diameter of the tip of the blade ring 5 is greater than the inner diameter of the gasket 3 and smaller than the outer diameter of the gasket 3. Further, the section of the blade ring 5 is a V-shaped structure, and when the sealing cover 2 is screwed, the tip of the blade ring 5 can cut into the surface layer of the gasket 3. Optionally, the top surface of the gasket 3 is provided with an annular cutting groove 6, the groove width of the annular cutting groove 6 is smaller than the thickness of the middle part of the blade ring 5, and when the blade ring 5 is inserted into the annular cutting groove 6, the middle part and the tail part of the blade ring 5 can extrude the groove wall of the annular cutting groove 6 towards two sides, so that the gasket 3 extrudes the inner side wall of the annular groove 4 towards two sides. After liquid is filled into the bottle body 1, the sealing cover 2 is screwed on the bottle mouth, the blade ring 5 downwards extrudes the gasket 3 along with continuous screwing of the sealing cover 2 and cuts into the surface layer of the gasket 3 or enters the cutting groove, the blade ring 5 cannot cut through the gasket 3, under the cutting and extruding action of the blade ring 5, the gasket 3 and the groove bottom of the annular groove can be extruded, the gasket 3 can be extruded towards the inner side wall of the annular groove 4 from two sides, the extrusion sealing of three contact surfaces is realized, the sealing performance is obviously improved, and the liquid standard sample can keep long-time stability.
The invention also provides a preparation method of the sapphire color graded liquid standard sample, which is used for preparing the sapphire color graded liquid standard sample and comprises the following steps:
step 1: providing a plurality of volumetric flasks with covers, and respectively filling water into the volumetric flasks, wherein the volumetric flasks with the covers are selected to ensure that errors caused by volatilization of a solvent in the standing process of the liquid are reduced as much as possible;
step 2: adding the red stock solution into one volumetric flask (the first volumetric flask), fully stirring and standing to obtain a red stock solution aqueous solution;
adding the blue stock solution into another volumetric flask (a second volumetric flask), fully stirring and standing to obtain a blue stock solution aqueous solution;
adding the yellow stock solution into another volumetric flask (a third volumetric flask), fully stirring, and standing to obtain a yellow stock solution aqueous solution;
wherein, the full stirring and the standing are to ensure that stock solutions (red stock solution, blue stock solution and yellow stock solution) are uniformly diffused;
and step 3: taking part of the red stock solution aqueous solution from the first volumetric flask by using a pipettor, adding the red stock solution aqueous solution into a fourth volumetric flask, diluting the red stock solution aqueous solution to the red stock solution concentration required by the standard liquid ratio, fully stirring the red stock solution and standing the red stock solution to obtain a diluted red stock solution; wherein, the concentration of the stock solution required by fully diluting to be close to the solution proportion can reduce single error caused by pipette system error and experimental operation;
taking part of the blue stock solution aqueous solution from the second volumetric flask by using a pipettor, adding the blue stock solution aqueous solution into a fifth volumetric flask, fully stirring, and standing to obtain a diluted blue stock solution aqueous solution;
taking part of the yellow stock solution aqueous solution from the third volumetric flask by using a pipettor, adding the yellow stock solution aqueous solution into a sixth volumetric flask, fully stirring, and standing to obtain a diluted yellow stock solution aqueous solution;
taking part of the diluted blue stock solution from the fifth volumetric flask by using a pipettor, adding the blue stock solution into a seventh volumetric flask, fully stirring, and standing to obtain a blue stock solution after standing;
and 4, step 4: taking a part of diluted red stock solution from a fourth volumetric flask, a part of diluted blue stock solution from a second volumetric flask and a part of diluted yellow stock solution from a sixth volumetric flask respectively by using a pipettor according to the components of the dark blue standard liquid, mixing, diluting to a mixed liquid with a required volume, and fully stirring to obtain the dark blue standard liquid;
taking a part of diluted red stock solution from a fourth volumetric flask, a part of blue stock solution from a second volumetric flask and a part of diluted yellow stock solution from a sixth volumetric flask respectively by using a pipettor according to the components of the brilliant blue standard liquid, mixing, diluting to a mixed liquid with a required volume, and fully stirring to obtain the brilliant blue standard liquid;
according to the components of the thick blue standard liquid, respectively taking a part of diluted red stock solution from a fourth volumetric flask, a part of blue stock solution from a second volumetric flask and a part of diluted yellow stock solution from a sixth volumetric flask by using a pipettor, mixing, diluting to a mixed liquid with a required volume, and fully stirring to obtain the thick blue standard liquid;
taking a part of diluted red stock solution from a fourth volumetric flask, a part of diluted blue stock solution from a fifth volumetric flask and a part of diluted yellow stock solution from a sixth volumetric flask respectively by using a pipettor according to the components of the blue standard liquid, mixing, diluting to a mixed liquid with a required volume, and fully stirring to obtain the blue standard liquid;
and taking part of the blue stock solution water solution after standing from the seventh volumetric flask by using a liquid transfer device according to the components of the light blue standard liquid to obtain the light blue standard liquid.
Compared with the prior art, the beneficial effects of the preparation method of the sapphire color-graded liquid standard sample provided by the invention are basically the same as those of the sapphire color-graded liquid standard sample, and are not repeated herein.
In order to ensure the mixing uniformity of each time, the standing time in each step is 0.5-1.5 h (for example, 1 h).
In order to avoid the influence of the residual contaminants in the volumetric flask on the standard liquid, the method for preparing the sapphire color-graded liquid standard sample further comprises the following steps before the step 1:
and cleaning the volumetric flask, and naturally drying or drying in an oven to keep the volumetric flask clean.
Specifically, the method for preparing the liquid standard sample for sapphire color grading, which is used for determining the components of each standard liquid (i.e. during the preparation process), is shown in fig. 10, and comprises the following steps: blind adjustment, coarse adjustment, fine adjustment, expansion, optimization and value setting are carried out, so that the colors of the modulated dark blue standard liquid, brilliant blue standard liquid, dark blue standard liquid, blue standard liquid and light blue standard liquid are consistent with or very close to the colors of the physical standard samples. Color allocation and comparison, wherein subjectivity exists in observation and simulation of one person, and system deviation always exists due to different color sensitivities of each person, so that in order to eliminate visual errors of the color caused by the person, the design of the test scheme adopts a multi-person, multi-wheel and multi-frequency test comparison scheme from coarse to fine and from fine to fine and then from fine to a fixed value.
Wherein, blind tune includes the following steps: the first step of a liquid sample from scratch to birth is to firstly contrast the color of a real gemstone standard sample and preliminarily find out the main primary color composition of the color of the liquid standard sample and the approximate concentration range of each primary color. Generally, an equal ratio method is adopted to debug a concentration gradient sample of a main color, then an equal difference method is adopted to debug an equal difference concentration sample of the order of magnitude, and the sample is compared with a standard sample to select the closest concentration range. In the same way, the concentration range of the secondary color is determined experimentally in the liquid for mixing the secondary color into the primary color with the determined concentration range. If necessary, a third color adjustment experiment is carried out to obtain the concentration ranges of the main color and the secondary color.
The coarse adjustment comprises the following steps: and in the concentration range of the main color and the secondary color, preliminarily finding a sample proportioning scheme which is basically close to the color of the real object gem standard sample through proportioning and comparison to obtain 1-2 rough-adjusted components which are close to the real object gem standard sample in color.
The fine adjustment comprises the following steps: on the basis of the coarse adjustment of the components, a color matching scheme which is basically consistent with that of a standard sample is found by narrowing the concentration change range, and 1-2 approximate fine adjustment components are generated. The fine adjustment process is to avoid personal system errors, and is usually performed according to the observation results of 3-5 persons as an adjustment scheme.
The expansion comprises the following steps: according to the rule of the coarse adjustment and fine adjustment of the components (different concentration ratios and different influences of concentration change), 5-10 extension components are uniformly adjusted around the fine adjustment component according to linear, equal proportion or planar distribution.
Preferably comprising the steps of: respectively comparing the expanded components with a real gemstone standard sample, asking more than 10 sensory evaluators to perform comparison tests, analyzing data, calculating possible optimal components, leaving the closest optimal component selected by high frequency, and performing subsequent constant value tests to obtain 1-2 optimal components. In the preferred process, if the condition is selected extremely or the adjusted sample is not the same, the fine adjustment or the expansion link is required to be returned, and the expanded liquid proportioning scheme is readjusted.
Setting the value: the setting comprises two steps of sensory setting and instrument setting.
And the sensory evaluation is a calculation scheme obtained by weighted average calculation of 1-2 optimal components generated in an optimal link, generally a sample with the highest visual observation frequency and 5-10 liquid samples, if the ratio of the calculation scheme to the sample with the highest observation frequency is the same, the ratio preparation scheme is generally considered to be close to the true value, another ratio scheme can be prepared nearby to be used as an interference item for sensory comparison test, finally, the optimal sample ratio scheme is obtained, and then, the instrument evaluation is carried out.
The instrument calibration is to use an ultraviolet-visible spectrophotometer to measure the absorption (or transmission) line of a sensory calibration sample in the visible light range of 400-760nm and determine the integral form of the absorption (or transmission) line of the liquid sample to the visible light in the visible light range as the calibration curve of the liquid sample.
Example one
Preparing experimental articles: liquid ink and deionized water.
Preparing an experimental device: glass bottles, screw-top volumetric flasks (with lids), pipettors, stir bars, syringes, liquid containers.
The preparation method of the sapphire color-graded liquid standard sample of the embodiment comprises the following steps:
step a: washing all experimental equipment, naturally drying in the air or drying in an oven, and keeping clean for later use;
step b: pouring the red liquid stock solution into a clean glass bottle; pouring the blue liquid stock solution into a clean glass bottle; pouring the yellow liquid stock solution into a clean glass bottle;
step c: numbering seven clean rotary-mouth volumetric flasks No. 1-7 respectively, and filling 9ml of deionized water into the flasks No. 1-7 by using a pipettor;
step d: taking 1ml of red liquid stock solution into a No. 1 bottle by using a pipettor, fully stirring, screwing a bottle cap and standing for 1 hour;
taking 1ml of blue liquid stock solution into a No. 2 bottle by using a pipettor, fully stirring, screwing a bottle cap and standing for 1 hour;
taking 1ml of yellow liquid stock solution into a No. 3 bottle by using a pipettor, fully stirring, screwing a bottle cap and standing for 1 hour;
step e: taking 1ml of red solution from the No. 1 bottle to the No. 4 bottle by using a pipettor, fully stirring, screwing a bottle cap and standing for 1 hour;
taking 1ml of blue solution from the No. 2 bottle to the No. 5 bottle by using a pipettor, screwing a bottle cap and standing for 1 hour;
taking 1ml of yellow solution from the No. 3 bottle into the No. 6 bottle by using a pipettor, screwing a bottle cap and standing for 1 hour;
taking 1ml of blue solution from the No. 5 bottle to the No. 7 bottle by using a pipettor, screwing a bottle cap and standing for 1 hour;
step f: a dark blue liquid standard sample (No. DB) was prepared by removing 200. mu.l of red diluent liquid from No. 4 bottle, 800. mu.l of blue diluent liquid from No. 2 bottle, and 140. mu.l of yellow diluent liquid from No. 6 bottle, adding 860. mu.l of deionized water to prepare a 2ml solution, stirring the solution sufficiently, transferring the solution into a liquid container with a clean syringe, and screwing a seal cap, respectively, as shown in FIG. 1.
A200. mu.l red dilution liquid is taken out from a No. 4 bottle, a 600. mu.l blue dilution liquid is taken out from a No. 2 bottle, and a 120. mu.l yellow dilution liquid is taken out from a No. 6 bottle, 1080. mu.l deionized water is added to prepare a 2ml solution, the solution is fully stirred, the solution is transferred into a liquid container by a clean syringe, a sealing cover is screwed, and a brilliant blue liquid standard sample (number VB) is prepared, see figure 2.
A200. mu.l red dilution liquid was taken out from bottle No. 4, a 400. mu.l blue dilution liquid was taken out from bottle No. 2, and a 100. mu.l yellow dilution liquid was taken out from bottle No. 6, respectively, and 1.3ml deionized water was added to prepare a 2ml solution, which was stirred well, transferred to a liquid container using a clean syringe, and a sealing cap was screwed to prepare a concentrated blue liquid standard sample (No. IB), as shown in FIG. 3.
A100. mu.l red diluent liquid, a 1ml blue diluent liquid and a 60. mu.l yellow diluent liquid were respectively removed from the No. 4 bottle, the No. 5 bottle and the No. 6 bottle by a pipette, and 840. mu.l deionized water was added thereto to prepare a 2ml solution, which was sufficiently stirred, transferred to a liquid container by a clean syringe, and a cap was screwed to prepare a blue liquid standard sample (No. B), as shown in FIG. 4.
Taking out 1ml of blue diluted liquid from No. 7 bottle by using pipettor, adding 1ml of deionized water to prepare 2ml of solution, stirring thoroughly, transferring into liquid container by using clean syringe, screwing sealing cover, and making into light blue liquid standard sample (No. LB), see FIG. 5.
Step g: and sticking a label on the prepared sample, and placing the sample in a corresponding position of a packaging box.
See table 1 for the composition of each standard sample.
TABLE 1 concentration ratio of sapphire liquid standard sample
In order to test the stability of the liquid standard sample, stability test samples with various colors are prepared in the test, the liquid standard sample is stored under the condition of room temperature illumination after being sealed, tracking test is carried out between 2021, 4 months, 7 days and 2021, 10 months and 15 days, and 6 times of stability tracking test is carried out for 6 months, ultraviolet-visible absorption spectrum lines of the sample in a visible light range are basically consistent, six curves are almost overlapped and do not have obvious change, and fig. 11 shows 6 ultraviolet-visible absorption spectrum lines of the light blue liquid standard sample in the visible light range, which is enough to prove that the liquid standard sample in the embodiment has good stability and is stable at least within half a year.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (8)
1. A liquid standard sample for sapphire color grading is characterized by comprising a deep blue standard liquid, a brilliant blue standard liquid, a thick blue standard liquid, a blue standard liquid and a light blue standard liquid;
the deep blue standard liquid comprises the following components in percentage by concentration: the concentration percentage of the red stock solution is more than 0 and less than or equal to 0.2, the concentration percentage of the blue stock solution is more than or equal to 4 and less than or equal to 10, and the concentration percentage of the yellow stock solution is more than 0 and less than or equal to 0.1;
the brilliant blue standard liquid comprises the following components in percentage by concentration: the concentration percentage of the red stock solution is more than 0 and less than or equal to 0.2, the concentration percentage of the blue stock solution is more than 2 and less than or equal to 3, and the concentration percentage of the yellow stock solution is more than 0 and less than or equal to 0.1;
the components of the concentrated blue standard liquid comprise the following components in percentage by concentration: the concentration percentage of the red stock solution is more than 0 and less than or equal to 0.2, the concentration percentage of the blue stock solution is more than or equal to 1 and less than or equal to 2, and the concentration percentage of the yellow stock solution is more than 0 and less than or equal to 0.1;
the blue standard liquid comprises the following components in percentage by concentration: the concentration percentage of the red stock solution is more than 0 and less than or equal to 0.2, the concentration percentage of the blue stock solution is more than or equal to 0.1 and less than or equal to 0.9, and the concentration percentage of the yellow stock solution is more than 0 and less than or equal to 0.1;
the light blue standard liquid comprises the following components in percentage by concentration: the concentration percentage of the red stock solution is more than or equal to 0 and less than or equal to 0.2, the concentration percentage of the blue stock solution is more than or equal to 0.01 and less than or equal to 0.09, and the concentration percentage of the yellow stock solution is more than or equal to 0 and less than or equal to 0.1;
red, yellow and blue are the three primary colors.
2. The sapphire color graded liquid standard sample of claim 1, wherein the composition of the deep-blue standard liquid comprises, in concentration percent, red dope 0.1, blue dope 4, and yellow dope 0.07.
3. The sapphire color graded liquid standard sample of claim 1 wherein the composition of the brilliant blue standard liquid comprises, in concentration percent, red dope 0.1, blue dope 3, and yellow dope 0.06.
4. The sapphire color graded liquid standard sample of claim 1, wherein the components of the concentrated blue standard liquid comprise, in concentration percent, red dope 0.1, blue dope 2, and yellow dope 0.05.
5. The sapphire color graded liquid standard sample of claim 1, wherein the components of the sapphire standard liquid comprise, in concentration percent, a red dope 0.05, a blue dope 0.5, and a yellow dope 0.03.
6. The sapphire color graded liquid standard sample of claim 1, wherein the composition of the light sapphire standard liquid comprises, in concentration percent, red dope 0, blue dope 0.05, and yellow dope 0.
7. The sapphire color graded liquid standard sample of any one of claims 1 to 6, wherein the red dope, blue dope, and yellow dope are printer inks.
8. A method for preparing a sapphire color-graded liquid standard sample, for preparing a sapphire color-graded liquid standard sample according to any one of claims 1 to 7, the method comprising the steps of:
step 1: providing a plurality of volumetric flasks with covers, and respectively filling water into the volumetric flasks;
step 2: adding the red stock solution into a first volumetric flask, fully stirring and standing to obtain a red stock solution aqueous solution;
adding the blue stock solution into a second volumetric flask, fully stirring and standing to obtain a blue stock solution aqueous solution;
adding the yellow stock solution into a third volumetric flask, fully stirring and standing to obtain a yellow stock solution aqueous solution;
and step 3: taking part of the red stock solution aqueous solution from the first volumetric flask by using a pipettor, adding the red stock solution aqueous solution into a fourth volumetric flask, diluting the red stock solution aqueous solution to the red stock solution concentration required by the standard liquid ratio, fully stirring the red stock solution and standing the red stock solution to obtain a diluted red stock solution;
taking part of the blue stock solution aqueous solution from the second volumetric flask by using a pipettor, adding the blue stock solution aqueous solution into a fifth volumetric flask, fully stirring, and standing to obtain a diluted blue stock solution aqueous solution;
taking part of the yellow stock solution aqueous solution from the third volumetric flask by using a pipettor, adding the yellow stock solution aqueous solution into a sixth volumetric flask, fully stirring, and standing to obtain a diluted yellow stock solution aqueous solution;
taking part of the diluted blue stock solution from the fifth volumetric flask by using a pipettor, adding the blue stock solution into a seventh volumetric flask, fully stirring, and standing to obtain a blue stock solution after standing;
and 4, step 4: taking a part of diluted red stock solution from a fourth volumetric flask, a part of diluted blue stock solution from a second volumetric flask and a part of diluted yellow stock solution from a sixth volumetric flask respectively by using a pipettor according to the components of the dark blue standard liquid, mixing, diluting to a mixed liquid with a required volume, and fully stirring to obtain the dark blue standard liquid;
taking a part of diluted red stock solution from the fourth volumetric flask, a part of blue stock solution from the second volumetric flask and a part of diluted yellow stock solution from the sixth volumetric flask respectively by a pipette according to the components of the brilliant blue standard liquid, mixing, diluting to a mixed liquid with a required volume, and fully stirring to obtain the brilliant blue standard liquid;
according to the components of the thick blue standard liquid, respectively taking a part of diluted red stock solution from a fourth volumetric flask, a part of blue stock solution from a second volumetric flask and a part of diluted yellow stock solution from a sixth volumetric flask by using a pipettor, mixing, diluting to a mixed liquid with a required volume, and fully stirring to obtain the thick blue standard liquid;
taking a part of diluted red stock solution from a fourth volumetric flask, a part of diluted blue stock solution from a fifth volumetric flask and a part of diluted yellow stock solution from a sixth volumetric flask respectively by using a pipettor according to the components of the blue standard liquid, mixing, diluting to a mixed liquid with a required volume, and fully stirring to obtain the blue standard liquid;
and taking part of the blue stock solution water solution after standing from the seventh volumetric flask by using a liquid transfer device according to the components of the light blue standard liquid to obtain the light blue standard liquid.
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| CN107709976A (en) * | 2015-07-29 | 2018-02-16 | 邓文帅 | A kind of detection method of colour jewel quality of colour |
| CN113646623A (en) * | 2018-12-10 | 2021-11-12 | 金展科技有限公司 | Gem color grading processing method and grading system |
| CN111613169A (en) * | 2020-05-11 | 2020-09-01 | 中国地质大学（武汉） | Jewelry color grading display device |
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