Analysis method for determining halogens in geological samples by ICP-MS
US10985003B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2020 |
| Grant date | Apr 20, 2021 |
| Priority date | — |
| Expiry date | Mar 26, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides an analysis method for determining halogens in geological samples by ICP-MS. The method includes following steps: weighing a geological sample and ammonium bifluoride in a sample dissolving tank, tightening the sample dissolving tank, and shaking; then heating the sample dissolving tank in a drying oven, and setting a temperature of the drying oven as 200-220° C. and heating time as 1-2 hours; cooling the sample dissolving tank to room temperature so as to obtain a solid mixture after heating is ended, adding ammonium hydroxide into the solid mixture, centrifuging, removing a precipitate, and collecting the supernatant; adding an internal standard solution into the supernatant, and uniformly mixing; and optimizing the ICP-MS to an optimal state, testing content of chlorine in the supernatant under a condition of medium resolution m/Δm=4000, and testing content of bromine and iodine in the supernatant under a condition of low resolution m/Δm=300.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.