Surface modification of mineral dust particles by sulphuric acid processing: implications for ice nucleation abilities
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Published:2011-08-03
Issue:15
Volume:11
Page:7839-7858
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ISSN:1680-7324
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Container-title:Atmospheric Chemistry and Physics
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language:en
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Short-container-title:Atmos. Chem. Phys.
Author:
Reitz P.,Spindler C.,Mentel T. F.,Poulain L.,Wex H.,Mildenberger K.,Niedermeier D.,Hartmann S.,Clauss T.,Stratmann F.,Sullivan R. C.,DeMott P. J.,Petters M. D.,Sierau B.,Schneider J.
Abstract
Abstract. The ability of coated mineral dust particles to act as ice nuclei (IN) was investigated at LACIS (Leipzig Aerosol Cloud Interaction Simulator) during the FROST1- and FROST2-campaigns (Freezing of dust). Sulphuric acid was condensed on the particles which afterwards were optionally humidified, treated with ammonia vapour and/or heat. By means of aerosol mass spectrometry we found evidence that processing of mineral dust particles with sulphuric acid leads to surface modifications of the particles. These surface modifications are most likely responsible for the observed reduction of the IN activation of the particles. The observed particle mass spectra suggest that different treatments lead to different chemical reactions on the particle surface. Possible chemical reaction pathways and products are suggested and the implications on the IN efficiency of the treated dust particles are discussed.
Publisher
Copernicus GmbH
Subject
Atmospheric Science
Reference60 articles.
1. AlfaAeser: data sheet ammonium iron(III) sulphate, 2010. 2. Alfarra, M. R., Coe, H., Allan, J. D., Bower, K. N., Boudries, H., Canagaratna, M. R., Jimenez, J. L., Jayne, J. T., Garforth, A. A., Li, S. M., and Worsnop, D. R.: Characterization of urban and rural organic particulate in the lower Fraser valley using two aerodyne aerosol mass spectrometers, Atmos. Environ., 38, 5745–5758, https://doi.org/10.1016/j.atmosenv.2004.01.054, 2004. 3. Allan, J. D., Delia, A. E., Coe, H., Bower, K. N., Alfarra, M. R., Jimenez, J. L., Middlebrook, A. M., Drewnick, F., Onasch, T. B., Canagaratna, M. R., Jayne, J. T., and Worsnop, D. R.: A generalised method for the extraction of chemically resolved mass spectra from aerodyne aerosol mass spectrometer data, J. Aerosol Sci., 35, 909–922, https://doi.org/10.1016/j.jaerosci.2004.02.007, 2004. 4. Cantrell, W. and Heymsfield, A.: Production of ice in tropospheric clouds - A review, B. Am. Meteorol. Soc., 86, 795, https://doi.org/10.1175/bams-86-6-795, 2005. 5. Choi, E. M., Yoon, Y. H., Lee, S., and Kang, H.: Freezing transition of interfacial water at room temperature under electric fields, Phys. Rev. Lett., 95, 085701, https://doi.org/10.1103/PhysRevLett.95.085701, 2005.
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