期刊
ANALYST
卷 144, 期 11, 页码 3488-3493出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9an00207c
关键词
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资金
- CEMHTI (Orleans, France) [ANR-13-BS080012-01]
- Labex OSUG@2020 (Grenoble, France) [ANR-10-LABX-0056]
- French grand emprunt EquipEx (EcoX) [ANR-10-EQPX-27-01]
- CEA-CNRS CRG consortium
- INSU CNRS institute
- programme Explora'doc of the Rhone-Alpes Region
- Swiss National Science Foundation [200021_156586]
- UK Regenerative Medicine Platform [MRL02280X/1]
- Swiss National Science Foundation (SNF) [200021_156586] Funding Source: Swiss National Science Foundation (SNF)
The speciation of highly-diluted elements by X-ray absorption spectroscopy in a diverse range of materials is extremely challenging, especially in biological matrices such as articular cartilage. Here we show that using a high energy resolution fluorescence detected X-ray absorption spectroscopy (HERFD-XAS) technique coupled to an array of crystal analyzers, selenium speciation down to 400 ppb (mu g kg(-1)) within articular cartilage can be demonstrated. This is a major advance in the speciation of highly-diluted elements through X-ray absorption spectroscopy and opens new possibilities to study the metabolic role of selenium and other elements in biological samples.
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