Structure · dataset · 2025
Recovery and contents of thorium, uranium and potassium in lithium carbonate
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Description
Li2CO3, a raw material of Li2MoO4 crystal used for searching the neutrino-less double beta decay (0νββ), must be of high purity and low content of Th, U and K. In this study, quantitative methods were developed to determinate the content of Th, U and K in ultrapure Li2CO3 samples by inductively coupled plasma mass spectrometry (ICP-MS). The research showed the signals of Th, U and K were significantly inhibited with the increasing of lithium concentration.
When the lithium concentration reached 8000 ug g-1, the recovery of Th, U and K decreased to 10 ~ 30 %. For the determination of Th and U, both the recovery correction method and the TEVA - UTEVA combined resin method can eliminate the influence of the lithium matrix. The recovery correction method was simpler to operate, while the TEVA - UTEVA combined resin method was lower in detection limit.
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For measurement of K, the plasma gas (Ar) in the ICP - MS also induced significant interference. Compared with the standard measurement mode of ICP - MS, the cold flame mode with reduced radio frequency (RF) power can effectively reduce the interference from Ar, greatly improving the detection sensitivity of K. Meanwhile, the detection limit of K in Li2CO3 samples can be as low as 7.53 ng g-1, correcting the inhibitory effect of the lithium matrix by the recovery correction method.
A neutron activation analysis (NAA) measurement was also performed for the comparison, yielding results consistent with ICP-MS.
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Where it is published
- DOI doi.org/10.57760/sciencedb.j00186.00660 ↗
DOI / persistent id · from scidb cn
Catalogue records · 1
- OAI-PMH record scidb.cn/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=10.57760%2… ↗
metadata API · from scidb cn
Topics
- From keywords
- Earth & Environmental Science · Engineering · Humanities · Life Sciences · Materials Science · Social Science
- Inferred from text
- Inorganic chemistry 69% · Mass spectrometry 75%
Provenance · 1 source records, 13 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ScienceDB | 10.57760/sciencedb.j00186.00660 | 12 d ago | JSON v1 |
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|---|---|---|---|
| access_level | source · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].anzsrc:group:3402 | enrichment · scidb cn | taxonomy-embedding@1.0.0 | title+keywords+description (69%) |
| concepts[field].local:field:earth-environmental | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
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| concepts[field].local:field:humanities | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:materials-science | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
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| concepts[modality].local:modality:mass-spectrometry | enrichment · scidb cn | keyword-concept-rules@1.0.0 | title+description (75%) |
| description | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/description |
| license_text | source · scidb cn | connector:scidb_cn@1.0.0 | |
| publication_date | source · scidb cn | connector:scidb_cn@1.0.0 | |
| title | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/title |