Articles | Volume 18, issue 13
https://doi.org/10.5194/acp-18-9845-2018
https://doi.org/10.5194/acp-18-9845-2018
Research article
 | 
12 Jul 2018
Research article |  | 12 Jul 2018

Morphological transformation of soot: investigation of microphysical processes during the condensation of sulfuric acid and limonene ozonolysis product vapors

Xiangyu Pei, Mattias Hallquist, Axel C. Eriksson, Joakim Pagels, Neil M. Donahue, Thomas Mentel, Birgitta Svenningsson, William Brune, and Ravi Kant Pathak

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Cited articles

Ammann, M., Kalberer, M., Jost, D. T., Tobler, L., Rossler, E., Piguet, D., Gaggeler, H. W., and Baltensperger, U.: Heterogeneous production of nitrous acid on soot in polluted air masses, Nature, 395, 157–160, https://doi.org/10.1038/25965, 1998. 
Baron, P. A. and Willeke, K.: Aerosol measurement: principles, techniques, and applications, 2nd edn., Wiley-Interscience, New York, 2001. 
Chen, X., Hopke, P. K., and Carter, W. P. L.: Secondary organic aerosol from ozonolysis of biogenic volatile organic compounds: Chamber studies of particle and reactive oxygen species formation, Environ. Sci. Technol., 45, 276–282, https://doi.org/10.1021/es102166c, 2010. 
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Short summary
The findings in this study show that morphological transformation of soot occurs via two key complementary and sequential processes, i.e., void filling in the particle and its diameter growth. To quantify the state of morphological transformation, i.e., the utilization of material for filling and growth during the condensation processes, a framework was developed which can further be utilized to quantify the effect of condensed material on the optical and hygroscopic properties of soot.
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