Khotan jade dyeing quick identification method
A fast, surfactant-based technique, applied in the field of identifying whether Hetian jade is dyed
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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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