Articles | Volume 17, issue 3
Atmos. Chem. Phys., 17, 2423–2435, 2017
https://doi.org/10.5194/acp-17-2423-2017
Atmos. Chem. Phys., 17, 2423–2435, 2017
https://doi.org/10.5194/acp-17-2423-2017

Research article 15 Feb 2017

Research article | 15 Feb 2017

Diffusion coefficients of organic molecules in sucrose–water solutions and comparison with Stokes–Einstein predictions

Yuri Chenyakin et al.

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Cited articles

Abramson, E., Imre, D., Beránek, J., Wilson, J., and Zelenyuk, A.: Experimental determination of chemical diffusion within secondary organic aerosol particles, Phys. Chem. Chem. Phys., 15, 2983–2991, https://doi.org/10.1039/c2cp44013j, 2013.
Adler, G., Koop, T., Haspel, C., Taraniuk, I., Moise, T., Koren, I., Heiblum, R. H., and Rudich, Y.: Formation of highly porous aerosol particles by atmospheric freeze-drying in ice clouds, P. Natl. Acad. Sci. USA, 110, 20414–20419, https://doi.org/10.1073/pnas.1317209110, 2013.
Bateman, A. P., Gong, Z., Liu, P., Sato, B., Cirino, G., Zhang, Y., Artaxo, P., Bertram, A. K., Manzi, A. O., Rizzo, L. V, Souza, R. A. F., Zaveri, R. A., and Martin, S. T.: Sub-micrometre particulate matter is primarily in liquid form over Amazon rainforest, Nat. Geosci., 9, 34–37, https://doi.org/10.1038/ngeo2599, 2016.
Berkemeier, T., Shiraiwa, M., Poschl, U., and Koop, T.: Competition between water uptake and ice nucleation by glassy organic aerosol particles, Atmos. Chem. Phys., 14, 12513–12531, https://doi.org/10.5194/acp-14-12513-2014, 2014.
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Viscosity measurements, along with the Stokes–Einstein relation, have been used to estimate the diffusion rates of organics within SOA particles. To test the Stokes–Einstein relation, we measured the diffusion coefficients of three fluorescent organic dyes within sucrose–water solutions with varying water activity. The diffusion coefficients were measured using fluorescence recovery after photobleaching. The results should be useful for predicting the diffusion of organics with SOA particles.
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