| Abstract
| - Sorption from air to one snow sample has been measuredfor a broad set of organic vapors covering a wide rangeof physicochemical properties. Those results that could becompared to literature values mostly lay in the same orderof magnitude. As expected, a fit with the vapor pressuredid not reveal a good correlation (R2 = 0.11). Therefore, thedata set was interpreted with a linear free energy relationship, based on intermolecular interactions (van derWaals interactions and hydrogen bond interactions). Althoughwe cannot assign the observed sorption to a specific process(adsorption to the snow crystal surface, incorporation inthe solid ice crystal, absorption into a quasi-liquid layer, orgrain boundary effects), the model provides a useful toolfor the prediction of snow sorption for other compounds: log Kisnowsurface/air = 0.639 (±0.037) log Kihexadecane/air +3.38 (±0.17) ∑βi + 3.53 (±0.25) ∑αi − 6.85. The sorptioncoefficients measured could be described well with thecompound parameters used (subscript i), with an R2 = 0.90.
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