![]() (3) It has been estimated that SOA is the biggest fraction of the total organic aerosol. The gas-phase compounds can be either abundant volatile organic compounds (VOC, for example, even methane, in certain conditions, is able to form SOA (2)) or less abundant but more potent intermediate volatile organic compounds (IVOC). POA is directly emitted into the atmosphere, largely from combustion process, and SOA is formed in the atmosphere by oxidation of volatile gas-phase organic compounds emitted into the atmosphere either by biogenic or anthropogenic activity. OA is divided into primary (POA) and secondary (SOA) fractions. (1) Despite extensive research on this topic, the sources of OA are still uncertain. Organic aerosol is also responsible for a significant fraction of the total submicrometer aerosol mass. ![]() Additionally, they can adversely affect human health. They can affect climate either by interacting directly with solar radiation or by influencing cloud properties. ![]() ![]() Particles containing organic matter, termed organic aerosols (OA), are an important component of the atmosphere. ![]()
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