Photochemical smog

{
  "id": "MLC-T-CHM-008824",
  "term": "Photochemical smog",
  "field": "Chemistry",
  "definition": "A type of air pollution formed when sunlight reacts with nitrogen oxides and at least one volatile organic compound (VOC) in the atmosphere. This reaction produces ground-level ozone and other harmful secondary pollutants. It is a common environmental problem in urban areas with high vehicle emissions and warm, sunny climates.",
  "subject": "Organic and Biomolecular Chemistry",
  "references": [
    "PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 386 (https://doi.org/10.1351/pac200779030293)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/photochemical-smog/"
}