Water diffusion within secondary organic aerosol

H C Price, J Mattsson, Y Zhang, A K Bertram, J F Davies, J W Grayson, S T Martin, D O’Sullivan, J P Reid, A M J Rickards and B J Murray

Water diffusion in secondary organic material slows as temperature and relative humidity decrease. Here we present direct, quantitative measurements of diffusion coefficients in these extremely concentrated solutions, and discuss the implications for atmospheric processes in cold and dry environments.

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