Post-filter effect

{
  "id": "MLC-T-CHM-009307",
  "term": "Post-filter effect",
  "field": "Chemistry",
  "definition": "A phenomenon in molecular luminescence spectroscopy where the emitted luminescence is reabsorbed by other species in the sample solution before reaching the detector. This reabsorption leads to a decrease in the observed luminescence intensity and can distort the emission spectrum. It is more pronounced in concentrated solutions or when there is spectral overlap between emission and absorption bands.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "luminescence"
  ],
  "references": [
    "PAC, 1984, 56, 231. 'Nomenclature, symbols, units and their usage in spectrochemical analysis-Part VI: molecular luminescence spectroscopy' on page 244 (https://doi.org/10.1351/pac198456020231)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/post-filter-effect/"
}