Odor threshold

{
  "id": "MLC-T-CHM-008197",
  "term": "Odor threshold",
  "field": "Chemistry",
  "definition": "The lowest airborne concentration of a substance that a stated fraction of a human population, often half of a trained panel, can perceive by smell. Values come from sensory testing in which panelists sniff dilution series under controlled conditions, and each substance has its own figure. Hydrogen sulfide, with its rotten-egg smell, is detected at about 0.5 parts per billion.",
  "synonyms": [
    "odor detection threshold",
    "odour threshold"
  ],
  "subject": "Chemistry and Human Health",
  "see_also": [
    "threshold"
  ],
  "references": [
    "PAC, 2007, 79, 1153. 'Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)' on page 1274 (https://doi.org/10.1351/pac200779071153)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/odor-threshold/"
}