The organic coating unit, an all-in-one system for reproducible generation of secondary organic matter aerosol
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Authors
Kalbermatter, Daniel M.
Wolfer, Kate
Resch, Julian
Kalberer, Markus
Hammer, Tobias
Vasilatou, Konstantina
Author (Corporation)
Publication date
18.08.2022
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Type
01A - Journal article
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Parent work
Aerosol Science and Technology
Special issue
DOI of the original publication
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Series
Series number
Volume
56
Issue / Number
10
Pages / Duration
947-958
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Publisher / Publishing institution
Taylor & Francis
Place of publication / Event location
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Abstract
We report on a novel automated oxidation flow reactor to generate a wide variety of organic aerosol samples. The instrument is equipped with a humidifier, a dosing system for volatile organic precursors and an oxidation flow reactor (OFR) for generation of secondary organic matter (SOM). The instrument, known as organic coating unit (OCU), can produce homogeneously nucleated SOM particles or, used in combination with a standard combustion generator (e.g., a diffusion flame soot generator or any other seed particle), particles coated with a controlled amount of SOM. The physical and chemical properties of the generated particles can be controlled in a simple manner by selecting through a touch-screen target values for parameters, such as organic gaseous precursor concentration, humidity, and UV (ultraviolet) light intensity. Parameters and measured quantities are automatically stored in text files for easy export and analysis. Furthermore, we provide stable operation conditions and characterize the physicochemical properties of the generated aerosols with an array of methods, including transmission electron microscopy (TEM), thermal-optical analysis and liquid chromatography coupled with mass spectrometry (LC-MS). This all-in-one instrument is robust, compact, portable, and user-friendly, making it ideal for laboratory or field-based aerosol studies.
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ISBN
ISSN
1521-7388
0278-6826
0278-6826
Language
English
Created during FHNW affiliation
Yes
Strategic action fields FHNW
Publication status
Published
Review
Peer review of the complete publication
Open access category
Closed
License
Citation
Keller, A., Kalbermatter, D. M., Wolfer, K., Specht, P., Steigmeier, P., Resch, J., Kalberer, M., Hammer, T., & Vasilatou, K. (2022). The organic coating unit, an all-in-one system for reproducible generation of secondary organic matter aerosol. Aerosol Science and Technology, 56(10), 947–958. https://doi.org/10.1080/02786826.2022.2110448
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