An absorption model of gas/particle partitioning of organic compounds in the atmosphere

On-site and off-site atmospheric PBDEs in an electronic dismantling workshop in south China: Gas-particle partitioning and human exposure assessment

“…The slope should be close to À1 for either adsorption or absorption mechanism in true equilibrium state (Pankow, 1994). The intercept is mainly dependent on the type and properties of the aerosols.…”

“…The gas-particle partition coefficient (K p ) is commonly used to describe gas-particle partitioning of semi-volatile organic compounds (SVOCs) through the equation K p ¼ (F/A)/TSP, where F and A are particulate and gas-phase concentrations, respectively (Pankow, 1994). Two different mechanisms exist for the partitioning process (i.e., adsorption onto the surface of aerosols and absorption into the aerosol organic matter).…”

Reactions at surfaces in the atmosphere: integration of experiments and theory as necessary (but not necessarily sufficient) for predicting the physical chemistry of aerosols

“…10 Partitioning also occurs for semi-volatile organics, and this is believed to play a significant role in the formation of secondary organic aerosols (SOA). [57][58][59][60][61][62] Indeed, there may be a reservoir of such semi-volatile organics that are not currently measured in air but contribute to SOA formation. [63][64][65] This would help to reconcile the difference between predicted SOA concentrations in air and the measured values, which can be as much as an order of magnitude greater than predicted.…”

Multi-generational oxidation model to simulate secondary organic aerosol in a 3-D air quality model

“…The volatility is represented by the gas/particle partitioning coefficient (K p ) (Pankow, 1994) and parameterized as…”