Articles | Volume 12, issue 1
Research article
16 Jan 2019
Research article |  | 16 Jan 2019

Development of an online-coupled MARGA upgrade for the 2 h interval quantification of low-molecular-weight organic acids in the gas and particle phases

Bastian Stieger, Gerald Spindler, Dominik van Pinxteren, Achim Grüner, Markus Wallasch, and Hartmut Herrmann

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Cited articles

Bao, L. F., Matsumoto, M., Kubota, T., Sekiguchi, K., Wang, Q. Y., and Sakamoto, K.: Gas/particle partitioning of low-molecular-weight dicarboxylic acids at a suburban site in Saitama, Japan, Atmos. Environ., 47, 546–553,, 2012. 
Berg, J. M., James, D. L., Berg, C. F., Toda, K., and Dasgupta, P. K.: Gas collection efficiency of annular denuders: A spreadsheet-based calculator, Anal. Chim. Acta, 664, 56–61,, 2010. 
Bock, N., Baum, M. M., Anderson, M. B., Pesta, A., and Northrop, W. F.: Dicarboxylic Acid Emissions from Aftertreatment Equipped Diesel Engines, Environ. Sci. Technol., 51, 13036–13043,, 2017. 
Boreddy, S. K. R., Mochizuki, T., Kawamura, K., Bikkina, S., and Sarin, M. M.: Homologous series of low molecular weight (C1-C10) monocarboxylic acids, benzoic acid and hydroxyacids in fine-mode (PM2.5) aerosols over the Bay of Bengal: Influence of heterogeneity in air masses and formation pathways, Atmos. Environ., 167, 170–180,, 2017. 
Boring, C. B., Al-Horr, R., Genfa, Z., Dasgupta, P. K., Martin, M. W., and Smith, W. F.: Field measurement of acid gases and soluble anions in atmospheric particulate matter using a parallel plate wet denuder and an alternating filter-based automated analysis system, Anal. Chem., 74, 1256–1268,, 2002. 
Short summary
A MARGA was combined with an additional IC system specialized for the 2 h interval online quantification of 12 low-molecular-weight organic acids in the gas and particle phases. Low limits of detection and good precision were achieved. The suitability for field measurements was shown. This setup reduces laboratory work and filter sampling artifacts. Diurnal profiles, sources and phase distributions of these compounds will improve the knowledge of the tropospheric multiphase chemistry.