CN117491349A - Gold and silver purity detection agent and preparation method thereof - Google Patents
Gold and silver purity detection agent and preparation method thereof Download PDFInfo
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- CN117491349A CN117491349A CN202311401621.6A CN202311401621A CN117491349A CN 117491349 A CN117491349 A CN 117491349A CN 202311401621 A CN202311401621 A CN 202311401621A CN 117491349 A CN117491349 A CN 117491349A
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 123
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 121
- 239000004332 silver Substances 0.000 title claims abstract description 121
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 117
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 115
- 239000010931 gold Substances 0.000 title claims abstract description 115
- 238000001514 detection method Methods 0.000 title claims abstract description 82
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title abstract description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 32
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 26
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 26
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 13
- 239000003054 catalyst Substances 0.000 claims abstract description 13
- 239000007800 oxidant agent Substances 0.000 claims abstract description 13
- 230000001590 oxidative effect Effects 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 39
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 26
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims description 26
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 22
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 239000001103 potassium chloride Substances 0.000 claims description 11
- 235000011164 potassium chloride Nutrition 0.000 claims description 11
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 11
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 11
- 235000011151 potassium sulphates Nutrition 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 8
- 239000003086 colorant Substances 0.000 abstract description 9
- 229910000510 noble metal Inorganic materials 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 20
- 150000002500 ions Chemical class 0.000 description 17
- 238000003756 stirring Methods 0.000 description 11
- 230000035484 reaction time Effects 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- 238000007747 plating Methods 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000011449 brick Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000004846 x-ray emission Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- 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
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
-
- 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
-
- 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
- G01N1/38—Diluting, dispersing or mixing samples
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- Engineering & Computer Science (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention relates to the technical field of noble metal detection, and particularly discloses a gold and silver purity detection agent and a preparation method thereof. A gold and silver purity detection agent is prepared from the following raw materials: 17% -28% of hydrochloric acid; 18.1% -26.4% of oxidant; 22.15% -35.36% of catalyst; 1.6% -4.5% of film forming agent; the balance being water; the oxidant is mixed by 3-6% of sulfuric acid, 0.1-0.4% of hydrofluoric acid and 15-20% of phosphoric acid. The gold and silver purity detection agent can form ion oxide films on gold and silver surfaces with different purities, the colors of the ion oxide films on gold and silver surfaces with different purities are different, the colors of the reacted solutions are different, a user can identify the purity of gold and silver jewelry by distinguishing the colors of the ion oxide films and the reacted solutions, the ion oxide films generated on the gold and silver surfaces can be wiped off, the identification time can be shortened by the catalyst, the detection agent is more convenient for home self-identification, and the gold and silver purity detection efficiency is improved.
Description
Technical Field
The invention relates to the technical field of noble metal detection, in particular to a gold and silver purity detection agent and a preparation method thereof.
Background
For gold and silver jewelry purity detection, in the related art, a gravity method or an X-ray fluorescence spectrometry is adopted, and because the gold and silver purity detection mode in the related art has certain conditionality, (1) the gravity method is difficult to obtain accurate results for detecting alloy jewelry or gold-coated gold-plated jewelry made of metals with similar specific gravity to gold and silver; (2) the physical forms of the detected sample such as the form, the size, the thickness, the surface finish and the like are required to be consistent with the standard sample as much as possible when the X-ray fluorescence spectrometry is used for detecting the gold and silver jewelry, the detection is difficult to achieve in practice, and the method cannot be used for home self-detection, so that the daily home self-detection is inconvenient.
The technical problem to be solved by the application is as follows: how to improve the purity detection efficiency of gold and silver.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a gold and silver purity detection agent and a preparation method thereof.
In a first aspect, the present application provides a gold and silver purity detection agent, which adopts the following technical scheme:
a gold and silver purity detection agent is prepared from the following raw materials: 17% -28% of hydrochloric acid; 18.1% -26.4% of oxidant; 22.15% -35.36% of catalyst; 1.6% -4.5% of film forming agent; the balance being water; the oxidant is mixed by 3-6% of sulfuric acid, 0.1-0.4% of hydrofluoric acid and 15-20% of phosphoric acid.
By adopting the technical scheme, the method for detecting the purity of gold and silver is simple, the detection time is shortened, and the purity of gold and silver jewelry can be detected by consumers at home.
The gold and silver purity detection agent can form ion oxide films on gold and silver surfaces with different purities, the colors of the ion oxide films on the gold and silver surfaces with different purities are different, the colors of the reacted solutions are different, a user can identify the purity of gold and silver jewelry by distinguishing the colors of the ion oxide films and the reacted solutions, the ion oxide films generated on the gold and silver surfaces can be wiped off, the gold and silver purity detection agent does not affect the quality of the gold and silver jewelry, and the gold model capable of being distinguished is as follows: 24K, 22K, 18K, 14K, gold-plated piece, platinum-plated piece and platinum, the distinguishable silver model is: 99%, 92.5%, (80% -90%), (70% -80%), (70% -60%), (50% -60%) and silver plating piece, the catalyst can shorten the identification time, and then make this detection agent more convenient for family self-authentication, improve the convenience and the accuracy of gold, silver purity detection, improved gold, silver purity detection's efficiency.
In some embodiments, the mass ratio of the oxidizing agent to hydrochloric acid is 1: (0.9-1.6).
When the content of the oxidant is large, the color of the ion oxide film on the surface of the gold and silver jewelry is dark, the difficulty in distinguishing the color of the film is increased, the thickness of the ion oxide film is thick, and the ion oxide film on the surface of the jewelry is not easy to remove after detection; when the content of the oxidant is low, the ion oxide film on the surfaces of the gold and silver jewelry has lighter color, the color is not easy to distinguish, the difficulty of distinguishing is increased, and the purity detection efficiency of the gold and silver is reduced.
In some embodiments, the mass ratio of film former to hydrochloric acid is 1: (5-11).
When the content of the film forming agent is large, the color of the ionic oxide film on the surfaces of gold and silver is dark, so that the color identification of the ionic oxide film is affected; when the content of the film forming agent is low, the film forming effect on the surfaces of gold and silver is poor, even film cannot be formed, and the purity detection efficiency of gold and silver is reduced.
In some embodiments, the catalyst is a mixture of two or more of 0.02-0.1% calcium nitrate, 5% -9% aluminum nitrate, and 2.13% -6.26% magnesium nitrate.
The catalyst formed by mixing the calcium nitrate, the aluminum nitrate and the magnesium nitrate reduces the reaction time of the gold and silver purity detection agent and the gold and silver, is convenient for a user to self-test the purity of gold and silver jewelry at home, and improves the efficiency of gold and silver purity detection.
In some embodiments, the film former comprises 0.6% -1.5% potassium chloride and 1% -3% potassium sulfate in combination.
In a second aspect, the present application provides a method for preparing a gold and silver purity detection agent, which adopts the following technical scheme:
the preparation method of the gold and silver purity detection agent comprises the following steps:
s1, putting water into a beaker, adding aluminum nitrate, magnesium nitrate and calcium nitrate according to a proportion, and uniformly mixing at room temperature to obtain a first mixture;
s2, adding potassium chloride and potassium sulfate into the first mixture according to a proportion, and uniformly mixing to obtain a second mixture;
and S3, adding phosphoric acid, hydrofluoric acid, hydrochloric acid and sulfuric acid into the second mixture, uniformly mixing, and uniformly mixing to obtain the gold and silver purity detector.
In some embodiments, the hydrochloric acid has a concentration of 35% to 40%.
When the concentration of hydrochloric acid is too high, the corrosion to the surfaces of gold and silver is large, the ion oxide film on the surfaces of jewelry is not easy to remove after detection, the quality of gold and silver jewelry is affected, and the purity detection efficiency of gold and silver is reduced.
In some embodiments, the concentration of sulfuric acid is 98%, the concentration of hydrofluoric acid is 40%, and the concentration of phosphoric acid is 85%.
The invention has the beneficial effects that:
the gold and silver purity detection agent can form ion oxide films on gold and silver surfaces with different purities, the colors of the ion oxide films on gold and silver surfaces with different purities are different, the colors of the reacted solutions are different, a user can identify the purity of gold and silver jewelry by distinguishing the colors of the ion oxide films and the reacted solutions, the ion oxide films generated on the gold and silver surfaces can be wiped off, the gold and silver purity detection agent does not affect the quality of the gold and silver jewelry, and the gold model which can be distinguished is as follows: 24K, 22K, 18K, 14K, gold-plated piece, platinum-plated piece and platinum, the distinguishable silver model is: 99%, 92.5%, (80% -90%), (70% -80%), (70% -60%), (50% -60%) and silver plating piece, the catalyst can shorten the identification time, and then make this detection agent more convenient for family self-authentication, improve the convenience and the accuracy of gold, silver purity detection, improved gold, silver purity detection's efficiency.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the attached tables in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
A gold and silver purity detection agent is prepared by the following method:
s1, adding 56.15g of pure water into a beaker, adding 5g of aluminum nitrate, 2.13g of magnesium nitrate and 0.02g of calcium nitrate into the beaker, and stirring at room temperature until the mixture is dissolved to obtain a first mixture;
s2, adding 0.6g of potassium chloride and 1g of potassium sulfate into the first mixture, and stirring at room temperature until the first mixture is dissolved to obtain a second mixture;
s3, adding 15g of phosphoric acid with the concentration of 85%, 0.1g of hydrofluoric acid with the concentration of 40%, 17g of hydrochloric acid with the concentration of 35% and 3g of sulfuric acid with the concentration of 98% into the second mixture, and stirring at room temperature until the mixture is dissolved to obtain the gold and silver purity detection agent.
Example 2
A gold and silver purity detection agent is prepared by the following method:
s1, adding 25.74g of pure water into a beaker, adding 9g of aluminum nitrate, 6.26g of magnesium nitrate and 0.1g of calcium nitrate into the beaker, and stirring at room temperature until the mixture is dissolved to obtain a first mixture;
s2, adding 1.5g of potassium chloride and 3g of potassium sulfate into the first mixture, and stirring at room temperature until the first mixture is dissolved to obtain a second mixture;
s3, adding 15g of phosphoric acid with the concentration of 85%, 0.1g of hydrofluoric acid with the concentration of 40%, 17g of hydrochloric acid with the concentration of 40% and 3g of sulfuric acid with the concentration of 98% into the second mixture, and stirring at room temperature until the mixture is dissolved to obtain the gold and silver purity detection agent.
Example 3
A gold and silver purity detection agent is prepared by the following method:
s1, adding 39.27g of pure water into a beaker, adding 7g of aluminum nitrate, 4.15g of magnesium nitrate and 0.08g of calcium nitrate into the beaker, and stirring at room temperature until the mixture is dissolved to obtain a first mixture;
s2, adding 1.2g of potassium chloride and 2g of potassium sulfate into the first mixture, and stirring at room temperature until the first mixture is dissolved to obtain a second mixture;
s3, 17g of phosphoric acid with the concentration of 85%, 0.3g of hydrofluoric acid with the concentration of 40%, 25g of hydrochloric acid with the concentration of 40% and 4g of sulfuric acid with the concentration of 98% are added into the second mixture, and the gold and silver purity detection agent is obtained after stirring and dissolving at room temperature.
Example 4
A gold and silver purity detection agent is prepared by the following method:
s1, adding 39.17g of pure water into a beaker, adding 6.5g of aluminum nitrate, 4.52g of magnesium nitrate and 0.06g of calcium nitrate into the beaker, and stirring at room temperature until the mixture is dissolved to obtain a first mixture;
s2, adding 1.1g of potassium chloride and 2.1g of potassium sulfate into the first mixture, and stirring at room temperature until the first mixture is dissolved to obtain a second mixture;
s3, 17.3g of phosphoric acid with the concentration of 85%, 0.25g of hydrofluoric acid with the concentration of 40%, 24.5g of hydrochloric acid with the concentration of 40% and 4.5g of sulfuric acid with the concentration of 98% are added into the second mixture, and the mixture is stirred at room temperature until the mixture is dissolved, so that the gold and silver purity detection agent is obtained.
Comparative example 1
The difference between the gold and silver purity measuring agent and example 1 is that the mass of phosphoric acid is 25g, the mass of hydrofluoric acid is 1g, and the mass of sulfuric acid is 8g.
Comparative example 2
The difference between the gold and silver purity measuring agent and example 1 is that the mass of phosphoric acid is 1g, the mass of hydrofluoric acid is 0.05g, and the mass of sulfuric acid is 1g.
Comparative example 3
A gold and silver purity detector is different from example 1 in that the mass of potassium chloride and potassium sulfate are 5g.
Comparative example 4
A gold and silver purity measuring agent differs from example 1 in that the mass of potassium chloride and potassium sulfate are each 0.1g.
Comparative example 5
A gold and silver purity detector was distinguished from example 1 in that the catalyst was 7.15g of aluminum nitrate.
Comparative example 6
A gold and silver purity detector was distinguished from example 1 in that the catalyst was 7.15g magnesium nitrate.
Comparative example 7
A gold and silver purity detector is distinguished from example 1 in that the catalyst is 7.15g calcium nitrate.
Comparative example 8
The difference between the gold and silver purity measuring agent and example 1 is that the mass of aluminum nitrate is 1g, the mass of magnesium nitrate is 1g, and the mass of calcium nitrate is 0.05g.
Comparative example 9
The difference between the gold and silver purity measuring agent and example 1 is that the mass of aluminum nitrate is 15g, the mass of magnesium nitrate is 10g, and the mass of calcium nitrate is 2g.
Comparative example 10
A gold and silver purity detector is different from example 1 in that the film forming agent is 1.6g of potassium chloride.
Comparative example 11
A gold and silver purity detector is different from example 1 in that the film forming agent is 1.6g of potassium sulfate.
The preparation method of the gold and silver purity detection agents of comparative examples 1 to 11 is the same as that of examples.
Performance detection
For the gold and silver purity detection agents provided in examples 1-4 and comparative examples 1-11 of the present application, the following performance tests were performed:
and (3) detecting the purity of gold and silver: respectively taking gold type 24K, 22K, 18K and 14K, gold-plated piece, silver type 99%, 92.5%, 85%, 70% and silver-plated piece 15 parts, then placing a white detection plate on a workbench, respectively sucking the gold and silver purity detection agents of examples 1-4 and comparative examples 1-10 by using a dropper, respectively dripping 15 drops on the white detection plate, respectively placing different samples on the detection agents with the same formula, reacting at room temperature (25 ℃) for 60 seconds, and observing the color of a film on the surface of each sample and the color of the detection agent to be compared with a colorimetric card.
In the color chart, the color depth of the film includes:
degree I-no film;
II degree-light brick red;
III degree-brick red;
IV degree-light brown;
v degree-brown;
VI degrees-black gray;
VII degree-black.
The color of the detection agent comprises:
1-golden yellow;
2-yellow green;
3-light green;
4-green;
5-colorless and transparent;
6-beige.
The purity of gold and silver is shown in Table 1
TABLE 1 comparison of gold and silver purity
Polishing performance detection: after the purity detection of gold and silver is completed, the polishing strip is used for pressing and rubbing the surface of the sample, the ion oxide films on the surfaces of the gold and the silver are removed, and the rubbing times are recorded after the color.
Wherein, 3 samples are taken for each example and comparative example, the test results are averaged, and the specific test results are shown in tables 1 and 2.
TABLE 1 Performance test results (gold)
TABLE 2 Performance test results (silver)
As can be seen from the comparison of the data of examples 1-4 and comparative examples 1-11 in Table 1, the gold-plated piece finally achieves the effect of improving the purity detection efficiency of gold and silver by the mutual synergistic cooperation and coaction of various raw materials, wherein a large amount of wiping impurities are remained in the detection agent after the gold-plated piece reacts with the gold and silver purity detection agent, and the impurities are dissolved after standing; when the 14K gold is used as a purity detecting agent of gold and silver, a large number of bubbles are generated on the surface; the detection agent after the silver reaction with the purity of 80-90% is free of impurities, and the detection agent after the silver reaction with the purity of 70-80% is free of impurities, and the detection agent disappears after standing; after the silver plating reaction, impurities exist in the detection agent and are not disappeared after standing, and the plating layer of the silver plating is destroyed.
The gold and silver purity detection agent prepared by the method has short detection time at room temperature, improves the gold and silver purity detection efficiency, and has long detection time when the temperature is too low and short detection time when the temperature is too high; when the temperature is 25-35 ℃, the reaction time of the gold sample and the gold and silver purity detection agent is 120s, and the reaction time of the silver sample and the gold and silver detection agent is 45s; when the temperature is 10-15 ℃, the reaction time of the gold sample and the gold and silver purity detection agent is 240s, and the reaction time of the silver sample and the gold and silver detection agent is 90s.
As can be seen from comparison of experimental data of the embodiment 1 and the comparative examples 1-2 in the tables 1 and 2, the difficulty in distinguishing and erasing film color can be effectively reduced by controlling the content of the oxidizing agent in the gold and silver purity detection agents, and when the content of the oxidizing agent is high, the ion oxide film on the surfaces of gold and silver jewelry has deeper color and thicker thickness and is difficult to distinguish and erase; when the content of the oxidant is low, the color of the ion oxide film on the surfaces of the gold and silver jewelry is light, the ion oxide film is not easy to distinguish, and the purity detection efficiency of the gold and silver is reduced.
As can be seen from the comparison of the experimental data of example 1, comparative examples 3-4 and comparative examples 10-11 in Table 1, the difficulty in distinguishing and removing the film color can be reduced and the purity detection efficiency of gold and silver can be improved by controlling the content and the type of the film forming agent.
As can be seen from the comparison of the experimental data of example 1 and comparative examples 5 to 9 in Table 1, the reaction time of the gold and silver purity detection agent with gold and silver is reduced and the gold and silver purity detection efficiency is improved by the catalyst composed of three mixtures of calcium nitrate, aluminum nitrate and magnesium nitrate.
Finally, it should be noted that: the foregoing is merely a preferred example of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The gold and silver purity detecting agent is characterized by being prepared from the following raw materials:
17% -28% of hydrochloric acid;
18.1% -26.4% of oxidant;
22.15% -35.36% of catalyst;
1.6% -4.5% of film forming agent;
the balance being water;
the oxidant is mixed by 3-6% of sulfuric acid, 0.1-0.4% of hydrofluoric acid and 15-20% of phosphoric acid.
2. The gold and silver purity detection agent according to claim 1, wherein the mass ratio of the oxidant to hydrochloric acid is 1: (0.9-1.6).
3. The gold and silver purity detection agent according to claim 1, wherein the mass ratio of the film forming agent to hydrochloric acid is 1: (5-11).
4. The gold and silver purity detector according to claim 1, wherein the catalyst is a mixture of two or more of 0.02-0.1% of calcium nitrate, 5-9% of aluminum nitrate and 2.13-6.26% of magnesium nitrate.
5. The gold and silver purity detector of claim 1 wherein the film forming agent comprises 0.6% -1.5% potassium chloride and 1% -3% potassium sulfate mixed.
6. A method for preparing a gold and silver purity detector, which is used for preparing the gold and silver purity detector according to any one of claims 1 to 5, and is characterized by comprising the following steps:
s1, putting water into a beaker, adding aluminum nitrate, magnesium nitrate and calcium nitrate according to a proportion, and uniformly mixing at room temperature to obtain a first mixture;
s2, adding potassium chloride and potassium sulfate into the first mixture according to a proportion, and uniformly mixing to obtain a second mixture;
and S3, adding phosphoric acid, hydrofluoric acid, hydrochloric acid and sulfuric acid into the second mixture, and uniformly mixing to obtain the gold and silver purity detection agent.
7. The gold and silver purity detector of claim 6 wherein the concentration of the hydrochloric acid is between 35% and 40%.
8. The method for preparing a gold and silver purity detector according to claim 6, wherein the concentration of sulfuric acid is 98%, the concentration of hydrofluoric acid is 40%, and the concentration of phosphoric acid is 85%.
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| CN202311401621.6A CN117491349A (en) | 2023-10-26 | 2023-10-26 | Gold and silver purity detection agent and preparation method thereof |
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| CN202311401621.6A CN117491349A (en) | 2023-10-26 | 2023-10-26 | Gold and silver purity detection agent and preparation method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57198866A (en) * | 1981-06-01 | 1982-12-06 | Shigehito Saburi | Identifying method for precious metal |
| GB8316286D0 (en) * | 1982-06-18 | 1983-07-20 | Fine Metals Corp Pty Ltd | Precious metal testing |
| US6103194A (en) * | 1995-09-12 | 2000-08-15 | Jackson; Richard | Apparatus for testing items of metal such as jewelry |
| US6143572A (en) * | 1998-09-14 | 2000-11-07 | Grand; Rami | Method for detecting imitation gold, using a pen-like device |
| JP2005283252A (en) * | 2004-03-29 | 2005-10-13 | Nippon Steel & Sumikin Stainless Steel Corp | Method for simply analyzing component of metal material, and composition for simply analyzing component of metallic material |
| TW201205070A (en) * | 2010-07-19 | 2012-02-01 | Taiwan Chang He Internat Co Ltd | Simple detection method for K gold ingredient |
| CN104422689A (en) * | 2013-09-02 | 2015-03-18 | 邓勤 | Quick detection method of copper, K gold, gold, silver, palladium and platinum |
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2023
- 2023-10-26 CN CN202311401621.6A patent/CN117491349A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57198866A (en) * | 1981-06-01 | 1982-12-06 | Shigehito Saburi | Identifying method for precious metal |
| GB8316286D0 (en) * | 1982-06-18 | 1983-07-20 | Fine Metals Corp Pty Ltd | Precious metal testing |
| US6103194A (en) * | 1995-09-12 | 2000-08-15 | Jackson; Richard | Apparatus for testing items of metal such as jewelry |
| US6143572A (en) * | 1998-09-14 | 2000-11-07 | Grand; Rami | Method for detecting imitation gold, using a pen-like device |
| JP2005283252A (en) * | 2004-03-29 | 2005-10-13 | Nippon Steel & Sumikin Stainless Steel Corp | Method for simply analyzing component of metal material, and composition for simply analyzing component of metallic material |
| TW201205070A (en) * | 2010-07-19 | 2012-02-01 | Taiwan Chang He Internat Co Ltd | Simple detection method for K gold ingredient |
| CN104422689A (en) * | 2013-09-02 | 2015-03-18 | 邓勤 | Quick detection method of copper, K gold, gold, silver, palladium and platinum |
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