Resolving the Mystery of Sulphuric Acid in Atmospheric Nucleation

0347853 - ÚCHP 2011 FI eng C - Conference Paper (international conference)
Sipilä, M. - Berndt, T. - Petäjä, T. - Brus, David - Vanhanen, J. - Stratmann, F. - Patokoski, J. - Mauldin III, R.L. - Hyvärinen, A.-P. - Lihavainen, H. - Kulmala, M.
Resolving the Mystery of Sulphuric Acid in Atmospheric Nucleation.
Registration Handbook. Helsinki: -, 2010, 7F4. ISBN N.
[International Aerosol Conference IAC 2010. Helsinki (FI), 29.08.2010-03.09.2010]
Grant - others:EUCAARI(XE) 036833-2
Institutional research plan: CEZ:AV0Z40720504
Keywords : nucleation * sulphuric acid * experiments
Subject RIV: CF - Physical ; Theoretical Chemistry
www.iac2010.fi

Here we report results from two flow tube experiments showing that nucleation occurs at ambient relevant [H2SO4] and RH in absence of measurable quantities of unwanted contaminants. Furthermore, we show that possible reason for the disagreement with earlier flow tube studies on nucleation of H2SO4 and water is connected to short residence times and improper performance of particle counters (Vanhanen et al., 2010) used in previous experiments.
Permanent Link: http://hdl.handle.net/11104/0188535