X-ray absorption analysis

{
  "id": "MLC-T-CHM-012747",
  "term": "X-ray absorption analysis",
  "field": "Chemistry",
  "definition": "An analytical technique that determines the elemental composition and chemical state of a sample by measuring the absorption of X-rays as a function of energy. When X-ray energy matches the binding energy of an inner-shell electron, a sharp increase in absorption occurs, known as an absorption edge. This method is sensitive to the local atomic environment and oxidation state of the absorbing element.",
  "synonyms": [
    "X-ray absorption spectroscopy (XAS)"
  ],
  "subject": "Analytical Chemistry",
  "see_also": [
    "X-ray absorption near edge structure",
    "X-ray analysis"
  ],
  "references": [
    "PAC, 2021, 93, 69. 'Vocabulary of radioanalytical methods (IUPAC Recommendations 2020)' on page 105 (https://doi.org/10.1515/pac-2019-0302)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/x-ray-absorption-analysis/"
}