Purification method for detection of strontium isotope in silk cultural relic
US12313508B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 30, 2022 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Jun 30, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N1/4044
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A purification method for detection of a strontium isotope in a silk cultural relic. The method includes: (1) enrichment of the strontium isotope: after cleaning the silk cultural relic, adding the silk cultural relic to a digestion agent for microwave digestion, and conducting evaporation drying; and adding a dried product to a nitric acid solution for centrifugal separation, and extracting a supernatant; and (2) purification of the strontium isotope: first, mixing 4′,4″(5″)-di-tert-butyldicyclohexano-18-crown-6 and a defoamer and adsorbed to a purified resin separation column, and pre-cleaning the purified resin separation column with a nitric acid solution; next, injecting the supernatant in step (1) into the purified resin separation column with a nitric acid solution as a carrier solution; and then, injecting an 84Sr solution and an elution solution into the purified resin separation column in sequence to obtain a separated and purified strontium solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.