Method for sequentially extracting strontium isotopes for silk cultural relics

A technology of silk fabrics and isotopes, applied in the field of cultural relics detection, can solve problems such as difficult detection of values, achieve the effects of eliminating interference, accurate results, and rich information

Pending Publication Date: 2021-09-24
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the content of strontium in silk cultural relics is

Method used

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  • Method for sequentially extracting strontium isotopes for silk cultural relics

Examples

Experimental program
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Effect test

Embodiment 1

[0024] 1) Cut 2g of the silk sample into pieces with scissors, put it into a centrifuge tube, add 10.00mL of a mixed solution of deionized water and ethanol (volume ratio: 1:1), and oscillate ultrasonically for 1 hour to dissolve the dust on the surface of the silk sample The particles and adsorbed soluble sodium salts were centrifuged at 4000r / min for 20min, the supernatant A1 was extracted and the residue B1 was kept for use.

[0025] 2) Slowly add 5.00mL of 15wt% hydrogen peroxide solution to the residue B1 while stirring, rely on the strong oxidation of hydrogen peroxide to oxidize and dissolve the insoluble substances in the sample, and centrifuge at 4000r / min for 20min, Extract the supernatant A2 for later use, and keep the residue B2 for later use.

[0026] 3) Add 10.00 mL of a mixed solution of 0.5 mol / L acetic acid and hydrochloric acid (volume ratio 1:1) to the residue B2, and ultrasonically oscillate for 1 hour, mainly used to dissolve carbonates in silk samples, C...

Embodiment 2

[0030] 1) Cut 2g of the silk sample with scissors, put it into a centrifuge tube, add 15.00mL of a mixed solution of deionized water and ethanol (volume ratio: 1:1), and oscillate ultrasonically for 1 hour to dissolve the dust on the surface of the silk sample The particles and adsorbed soluble sodium salts were centrifuged at 4000r / min for 20min, the supernatant A1 was extracted and the residue B1 was kept for use.

[0031] 2) Slowly add 7.50mL of 15wt% hydrogen peroxide solution to the residue B1 while stirring, rely on the strong oxidizing property of hydrogen peroxide to oxidize and dissolve the insoluble substances in the sample, and centrifuge at 4000r / min for 20min, Extract the supernatant A2 for later use, and keep the residue B2 for later use.

[0032] 3) Add 15.00 mL of a mixed solution of 0.5 mol / L acetic acid and hydrochloric acid (volume ratio 1:1) to the residue B2, and ultrasonically oscillate for 1 hour, which is mainly used to dissolve carbonates in silk sampl...

Embodiment 3

[0036] 1) Cut 2g of the silk sample into pieces with scissors, put it into a centrifuge tube, add 20.00mL of a mixed solution of deionized water and ethanol (volume ratio: 1:1), and oscillate ultrasonically for 1 hour to dissolve the dust on the surface of the silk sample The particles and adsorbed soluble sodium salts were centrifuged at 4000r / min for 20min, the supernatant A1 was extracted and the residue B1 was kept for use.

[0037] 2) Slowly add 10.00mL of hydrogen peroxide solution with a concentration of 15wt% to the residue B1 while stirring, rely on the strong oxidation of hydrogen peroxide to oxidize and dissolve the insoluble substances in the sample, and centrifuge at 4000r / min for 20min, Extract the supernatant A2 for later use, and keep the residue B2 for later use.

[0038] 3) Add 20.00mL of a mixed solution of 0.5mol / L acetic acid and hydrochloric acid (volume ratio: 1:1) to the residue B2, and ultrasonically oscillate for 1 hour. It is mainly used to dissolve ...

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Abstract

The invention relates to the technical field of cultural relic detection, discloses a method for sequentially extracting strontium isotopes for silk cultural relics, and aims at a silk sample to explore the distribution rule of the strontium isotopes in each phase state in the silk sample by adopting a method for sequentially extracting water, acetic acid, hydrochloric acid, nitric acid and hydrofluoric acid. The method has the creativity that multi-step sequential extraction is carried out, the strontium isotope ratio is measured through thermal ionization mass spectrometry (TIMS), interference of other impurities is eliminated, isotope information of the silk fabric sample is accurately obtained, and the method is an efficient enrichment method for detecting the strontium content in the silk cultural relics. Meanwhile, the sequential extraction technology has the advantages of being easy to operate, high in applicability, rich in contained information and the like, and can be widely applied to the fields of element distribution, migration research and the like of soil, sediment, solid waste and the like.

Description

technical field [0001] The invention relates to the technical field of cultural relics detection, in particular to a method for sequentially extracting strontium isotopes from silk cultural relics. Background technique [0002] Silk is the first global commodity in history, and the source of silk cultural relics has been the direction of research by historians and archaeologists for more than a hundred years. Although patterns, styles and weaving techniques were once important methods for judging the origin of silk, none of these methods can provide conclusive evidence for the origin of silk due to the integration of civilizations. [0003] At present, using strontium stable isotopes to trace the origin of silk fabrics is a more accurate method system for textile cultural relics traceability, and it is also a development direction for scientifically developing textile cultural relics isotope technology traceability. However, the content of strontium in silk cultural relic...

Claims

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Application Information

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IPC IPC(8): G01N27/62G01N1/28
CPCG01N27/626G01N1/286G01N2001/2873
Inventor 刘勇彭志勤黎浩邵帅黄驹王秉
Owner ZHEJIANG SCI-TECH UNIV
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