Critical Concentration

{
  "id": "MLC-T-ENV-006912",
  "term": "Critical Concentration",
  "field": "Environment",
  "definition": "1. An ambient chemical concentration expressed in units of µg/m³ and used in the operational derivation of the inhalation RfC. This concentration will be the NOAEL Human Equivalent Concentration (HEC) adjusted from principal study data.\n\n2. An ambient chemical concentration expressed in units of g/m3 and used in the operational derivation of the inhalation RfC. This concentration will be the NOAEL Human Equivalent Concentration (HEC) adjusted from principal study data.",
  "subject": "Health and safety",
  "references": [
    "Integrated Risk Information System (IRIS) Glossary",
    "EPA 2003"
  ],
  "url": "https://mlchart.com/terminology/environment/critical-concentration/"
}