Articles | Volume 18, issue 23
Atmos. Chem. Phys., 18, 17497–17513, 2018
https://doi.org/10.5194/acp-18-17497-2018

Special issue: Fifth International Workshop on Ice Nucleation (FIN) (ACP/AMT...

Atmos. Chem. Phys., 18, 17497–17513, 2018
https://doi.org/10.5194/acp-18-17497-2018

Research article 11 Dec 2018

Research article | 11 Dec 2018

Activation of intact bacteria and bacterial fragments mixed with agar as cloud droplets and ice crystals in cloud chamber experiments

Kaitlyn J. Suski et al.

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Latest update: 16 Sep 2021
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Short summary
This work investigates the cloud condensation nuclei and ice nucleation activity of bacteria using cloud chamber data and a single particle mass spectrometer. The size and chemical composition of the cloud residuals show that bacterial fragments mixed with agar growth media activate preferentially over intact bacteria cells as cloud condensation nuclei. Intact bacteria cells do not make it into cloud droplets; they thus cannot serve as immersion-mode ice nucleating particles.
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