Rapid formation of sulfuric acid particles at near-atmospheric conditions |
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| Authors: | Berndt Torsten Böge Olaf Stratmann Frank Heintzenberg Jost Kulmala Markku |
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| Institution: | Leibniz-Institut für Troposph?renforschung e.V., Permoserstrasse 15, 04318 Leipzig, Germany. berndt@tropos.de |
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| Abstract: | We investigated the formation of new particles in a laboratory study, starting from H2SO4 produced in situ through the reaction of OH radicals with SO2. Newly formed particles were observed for H2SO4 concentrations above 7 x 10(6) per cubic centimeter. At 293 kelvin, a rough estimate yielded a nucleation rate of 0.3 to 0.4 particles per cubic centimeter per second for approximately 10(7) particles per cubic centimeter of H2SO4 (particle size >/= 3 nanometers). These findings are in agreement with observations from the atmosphere. The results demonstrate that under laboratory conditions similar to the atmosphere, particle formation occurs at atmospheric H2SO4 concentration levels. |
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