The global chemical industry is a significant source of volatile organic compounds (VOCs), which can have various environmental impacts. Here are some examples of VOCs released by the global chemical industry based on the provided search results:
1. Alkanes: Alkanes are a group of hydrocarbons that include methane, ethane, propane, and butane. They are often emitted from various global chemical processes, especially those related to petroleum refining and basic global chemical production .
2. Alkenes: Also known as olefins, alkenes are hydrocarbons containing at least one carbon-carbon double bond. Ethylene (ETH) and butadiene (BUT) are examples of alkenes that can be emitted from global chemical processes .
3. Aromatics: Aromatic compounds include benzene, toluene, ethylbenzene, and xylene (BTEX). These are commonly found in emissions from global chemical manufacturing, particularly in processes involving solvents and synthetic material production .
4. Halocarbons: These are compounds containing one or more halogen atoms bonded to carbon or silicon. For example, chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) are halocarbons that have been used in refrigerants and solvents .
5. Oxygenated Volatile Organic Compounds (OVOCs): OVOCs include a wide range of compounds such as alcohols, ketones, and aldehydes. They are often emitted from processes involving solvent use, such as in printing, wood furniture coating, and shoemaking .
6. Cyclohexane and Xylene: These were identified as major components during the emission from a typical global chemical enterprise, particularly from organized stacks .
It's important to note that the specific VOCs emitted can vary significantly depending on the type of global chemical industry and the processes involved. The composition of VOCs can also change over time as a result of advancements in pollution control technologies and shifts in production methods .
