Method for evaluating quality grade of blue amber ornament
A technology of quality grading and evaluation method, applied in the field of grading evaluation, it can solve the problems of confusion in sales and lack of classification standards for the quality of blue and white, and achieve the effect of reducing the degree of influence, facilitating comparison and reference, and promoting healthy development.
Active Publication Date: 2020-04-14
CHINA UNIV OF GEOSCIENCES (WUHAN)
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[0004] The present invention intends to provide a method for evaluating the quality of amber jewelry, which solves the problem that there is no classification standard for the quality of amber in the existing market, which leads to sales confusion
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[0026] Further detailed explanation through specific implementation mode below:
[0027] Amber is mainly an organic macromolecular polymer formed by the cross-linking reaction of diterpene molecules. On the basis of analyzing previous data, the soluble components of the amber sample were tested by gas chromatography-mass spectrometer (GC-MS) in the previous work of the present invention. The sample processing steps mainly include: grinding, weighing and bottling; ultrasonic extraction and Soxhlet extraction, and heating the extracted solution in a water bath; heating the volatile solvent in a sand bath; column chromatography separation , select the eluent to elute from top to bottom, separate the fractions of the sample by the chromatographic column, and finally obtain saturated hydrocarbons, aromatic hydrocarbons, non-hydrocarbon fractions and insoluble polymers. When the aromatic hydrocarbon fraction was extracted from Dominican blue amber, the solution turned blue, and the...
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Abstract
The invention, which belongs to the technical field of blue amber quality evaluation, discloses a blue amber ornament quality grade evaluation method. The method comprises the following steps: (a), collecting three-dimensional luminescence spectrum data of blue amber; (b), calculating color coordinates; (c), marking a CIE-1931 chromaticity diagram; (d), establishing a blue amber light-emitting color standard; (e), establishing a blue amber luminescence relative intensity standard; (f), establishing a blue amber luminescence characteristic grading standard; (g), calibrating a comparison sample;and (h), evaluating the quality of the blue amber. The invention provides a unified grading standard, so that the value of the blue amber has a reasonable evaluation system and evaluation index to standardize the market and promote the benign development of the blue amber industry; blue amber grades in sales are clearly distinguished, real and transparent information is provided for consumers, and the consumers can purchase the blue amber products conveniently as required.
Description
technical field [0001] The invention relates to the technical field of blue amber quality evaluation, in particular to a method for evaluating the quality of blue amber jewelry. Background technique [0002] Amber is known as the "King of Amber" because of its vivid blue optical effect, which looks like a blue sky, deep and unpredictable. Amber belongs to a kind of amber that shows yellow, brown-yellow, yellow-green and brown-red when viewed through perspective. It shows unique blue of different shades under the black background of natural light, and it can be more obvious under ultraviolet light. The classification of blue amber is mainly considered from two aspects: the supply of resources and the demand of the market. The supply of blue amber resources is very limited. The Dominican Republic is the main producer of blue amber. It is rich in high-quality amber. The annual output of amber is about 6,000 kilograms, of which blue amber accounts for about 10%. Blue only acco...
Claims
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IPC IPC(8): G01N21/64G01N21/84B07C5/342
CPCG01N21/6428G01N21/643G01N21/84B07C5/342
Inventor 王雅玫杨明星沈锡田张志清蒋欣然
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)