Articles | Volume 15, issue 6
https://doi.org/10.5194/acp-15-3429-2015
https://doi.org/10.5194/acp-15-3429-2015
Research article
 | 
28 Mar 2015
Research article |  | 28 Mar 2015

Total sulfate vs. sulfuric acid monomer concenterations in nucleation studies

K. Neitola, D. Brus, U. Makkonen, M. Sipilä, R. L. Mauldin III, N. Sarnela, T. Jokinen, H. Lihavainen, and M. Kulmala

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Kimmo Neitola on behalf of the Authors (26 Jan 2015)  Manuscript 
ED: Referee Nomination & Report Request started (28 Jan 2015) by Annele Virtanen
RR by Anonymous Referee #2 (13 Feb 2015)
RR by Anonymous Referee #1 (19 Feb 2015)
ED: Publish subject to technical corrections (24 Feb 2015) by Annele Virtanen
AR by Kimmo Neitola on behalf of the Authors (11 Mar 2015)  Author's response   Manuscript 
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Short summary
A discrepancy of 2 orders of magnitude was found between the measured sulfuric acid monomer concentration and total sulfate, when measured with independent methods (mass spectrometry and ion chromatography) with the same source of sulphuric acid vapor. The ion chromatography method produces the exact concentrations predicted by empirical equations, and the mass spectrometry method shows significantly lower values. The discrepancy is investigated thoroughly from different points of views.
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