Volatile organic compoundsspeedrevJune 5, 2024 « Back to Glossary Index (VOC) Unburned hydrocarbon (HC) portions of gasoline. Reactive gases released during combustion or evaporation of fuel and regulated by EPA. VOCs react with NOx in the presence of sunlight and form ozone. See Nonmethane Volatile Organic Compounds “`csv Related Articles: Glossary: VOCGlossary: Total CarbonGlossary: Total hydrocarbonsGlossary: Toxic EmissionGlossary: Tropospheric Ozone« Back to Glossary Index