Atmospheric sulphuric acid and neutral cluster measurements using CI-APi-TOF
نویسندگان
چکیده
منابع مشابه
Measurement of neutral sulfuric acid-dimethylamine clusters using CI-APi-TOF-MS
Recent studies suggest that dimethylamine could be a key ternary species in the formation and early growth of atmospheric aerosol particles. We report on nucleation studies for the ternary system of sulfuric acid, water and dimethylamine which have been performed at the CERN CLOUD chamber. These studies were conducted at atmospherically relevant concentrations of sulfuric acid and dimethylamine...
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We have investigated the formation and early growth of atmospheric secondary aerosol particles building on atmospheric measurements. The measurements were part of the QUEST 2 campaign which took place in spring 2003 in Hyytiälä (Finland). During the campaign numerous aerosol particle formation events occurred of which 15 were accompanied by gaseous sulphuric acid measurements. Our detailed anal...
متن کاملAtmospheric sulphuric acid and aerosol formation
S.-L. Sihto, M. Kulmala, V.-M. Kerminen, M. Dal Maso, T. Petäjä, I. Riipinen, H. Korhonen, F. Arnold, R. Janson, M. Boy, A. Laaksonen, and K. E. J. Lehtinen University of Helsinki, Department of Physical Sciences, P.O. Box 64, 00014 University of Helsinki, Finland Finnish Meteorological Institute, Climate and Global Change, Erik Palmenin Aukio 1, P.O. Box 503, 00101 Helsinki, Finland Atmospheri...
متن کاملComparison of the SAWNUC model with CLOUD measurements of sulphuric acid‐water nucleation
Binary nucleation of sulphuric acid-water particles is expected to be an important process in the free troposphere at low temperatures. SAWNUC (Sulphuric Acid Water Nucleation) is a model of binary nucleation that is based on laboratory measurements of the binding energies of sulphuric acid and water in charged and neutral clusters. Predictions of SAWNUC are compared for the first time comprehe...
متن کاملNeutral molecular cluster formation of sulfuric acid-dimethylamine observed in real time under atmospheric conditions.
For atmospheric sulfuric acid (SA) concentrations the presence of dimethylamine (DMA) at mixing ratios of several parts per trillion by volume can explain observed boundary layer new particle formation rates. However, the concentration and molecular composition of the neutral (uncharged) clusters have not been reported so far due to the lack of suitable instrumentation. Here we report on experi...
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ژورنال
عنوان ژورنال: Atmospheric Chemistry and Physics
سال: 2012
ISSN: 1680-7324
DOI: 10.5194/acp-12-4117-2012