Khotan jade dyeing quick identification method

A fast, surfactant-based technique, applied in the field of identifying whether Hetian jade is dyed

Inactive Publication Date: 2009-06-03
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can also be identified through scientific methods, but generally collectors who love jade can't do it

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The method steps for rapid identification of Hetian jade staining are as follows:

[0015] 1) Add 3 drops of 0.5mol / L sodium lauryl sulfate on the surface of the suspected dyed Hetian jade, and wipe it off with absorbent cotton after 1 minute;

[0016] 2) Add 2 drops of 0.1mol / L sulfuric acid to the surface of the above-mentioned Hetian jade wiped;

[0017] 3) Prepare a mixed solution with an ammonium thiocyanate concentration of 0.1mol / L and an agar concentration of 0.3mol / L, and then drop 2 drops of the mixed solution on the surface of the above-mentioned Hetian jade;

[0018] 4) After 1 minute, wipe off the reagent on the surface of the Hetian jade with absorbent cotton, and observe the color of the absorbent cotton. If the absorbent cotton is dyed brown-red, it means that the Hetian jade has been dyed; if the absorbent cotton is not dyed, it means that the Hetian jade has not been dyed.

Embodiment 2

[0020] The method steps for rapid identification of Hetian jade staining are as follows:

[0021] 1) Add 2 drops of 0.1mol / L cetyltrimethylamine dropwise on the surface of the suspected dyed Hetian jade, wipe it off with absorbent cotton after 1 minute;

[0022] 2) Add 3 drops of 0.1mol / L sulfuric acid to the surface of the above-mentioned Hetian jade wiped;

[0023] 3) Configure a mixed solution with an ammonium thiocyanate concentration of 0.01mol / L and a carbomer concentration of 0.01mol / L, and then drop 3 drops of the mixed solution on the surface of the above-mentioned Hetian jade;

[0024] 4) After 1 minute, wipe off the reagent on the surface of the Hetian jade with absorbent cotton, and observe the color of the absorbent cotton. If the absorbent cotton is dyed brown-red, it means that the Hetian jade has been dyed; if the absorbent cotton is not dyed, it means that the Hetian jade has not been dyed.

Embodiment 3

[0026] The method steps for rapid identification of Hetian jade staining are as follows:

[0027] 1) Add 2 drops of 0.2mol / L Tween-80 on the surface of the suspected dyed Hetian jade, wipe it off with absorbent cotton after 1 minute;

[0028] 2) Add 2 drops of 0.02mol / L sulfuric acid to the surface of the Hetian jade wiped above;

[0029] 3) Configure a mixed solution with a concentration of ammonium thiocyanate of 0.1mol / L and a concentration of polyvinyl alcohol of 0.05mol / L, and then drop 2 drops of the mixed solution on the surface of the above-mentioned Hetian jade;

[0030] 4) After 1 minute, wipe off the reagent on the surface of the Hetian jade with absorbent cotton, and observe the color of the absorbent cotton. If the absorbent cotton is dyed brown-red, it means that the Hetian jade has been dyed; if the absorbent cotton is not dyed, it means that the Hetian jade has not been dyed.

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PUM

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Abstract

The invention discloses a kind of quick identification method for the HeTian jade coloration. Firstly it cleans the jade surface and then reacts with the Fe3+ by the ammonium sulfocyanate or potassium rhodanate in acidic condition to form the rusty complex compound which proves the stone has been colored by the Fe2O3. Cleaning the surface regent by the pledget or absorbent paper and observing the color of them, if the color is rusty, the jade has been colored or the jade has not been colored. Because the true jade with red skin, the Fe2O3 is penetrated to inner, the sulfocyanate can not react with it to form rusty. So the identification method can identify if the jade has been colored and the method is quick and simple.

Description

technical field [0001] The invention relates to a method for identifying jade, in particular to a method for identifying whether Hetian jade is dyed. Background technique [0002] Xinjiang Hetian jade is exquisite in texture, moist in luster, firm in quality and full of toughness, and belongs to the best among jades. Because of its scarce minerals, it is difficult to dig, and after thousands of years of collection, it has become increasingly scarce, so it is even more precious. According to the different places of production, Hetian jade can be divided into three types: mountain material, mountain water, and sub-material. The sub-material is also called Ziyu. Ziyu is fished from the Yuhe River under the Kunlun Mountains. It is hard and dense, delicate and moist, with a luster like fat. Some sub-jades have skins of various colors due to long-term immersion in soil and sand containing groundwater. The characteristics of this sub-jade are not found in mountain materials. Mou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78
Inventor 高磊红
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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