Technical note: Sublimation of frozen CsCl solutions in an environmental scanning electron microscope (ESEM) - determining the number and size of salt particles relevant to sea salt aerosols

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F23%3A00571947" target="_blank" >RIV/68081731:_____/23:00571947 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/23:00132616

Result on the web

<a href="https://acp.copernicus.org/articles/23/4463/2023/" target="_blank" >https://acp.copernicus.org/articles/23/4463/2023/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5194/acp-23-4463-2023" target="_blank" >10.5194/acp-23-4463-2023</a>

Result language

angličtina

Original language name

Technical note: Sublimation of frozen CsCl solutions in an environmental scanning electron microscope (ESEM) - determining the number and size of salt particles relevant to sea salt aerosols

Original language description

We present a novel technique that elucidates the mechanism of the formation of small aerosolizable salt particles from salty frozen samples. We demonstrated that CsCl may be a suitable probe for sea salts due to its similar subzero properties and sublimation outcomes: CsCl substantially increased the visibility of the salt both during and after ice sublimation. Hence, we identified the factors that, during the sublimation of a frozen salty solution, are important in generating fine salt particles as a possible source of salt aerosol. The number, size, and structure of the particles that remain after ice sublimation were investigated with respect to the concentration of the salt in the sample, the freezing method, and the sublimation temperature. The last-named aspect is evidently of primary importance for the preference of fine salt crystals over a large compact piece of salt, we showed that the formation of small salt particles is generally restricted if the brine is liquid during the ice sublimation, i.e. at temperatures higher than the eutectic temperature (Teu). Small salt particles that might be a source of atmospheric aerosols were formed predominantly at temperatures below Teu, and their structures strongly depended on the concentration of the salt. For example, the sublimation of those samples that exhibited a concentration of less than 0.05 M often produced small aerosolizable isolated particles that are readily able to be windblown. Conversely, the sublimation of 0.5 M samples led to the formation of relatively stable and largely interconnected salt structures. Our findings are in good agreement with other laboratory studies which have unsuccessfully sought salt aerosols from, for example, frost flowers at temperatures above Teu. This study offers an explanation of the previously unexplored behaviour.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10510 - Climatic research

Project

<a href="/en/project/GA22-25799S" target="_blank" >GA22-25799S: Correlative Fluorescence Microscopy and Advanced Low-energy ESEM for Imaging of Immuno-Labelled Wet Biological Samples.</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Atmospheric Chemistry and Physics

ISSN

1680-7316

e-ISSN

1680-7324

Volume of the periodical

23

Issue of the periodical within the volume

7

Country of publishing house

DE - GERMANY

Number of pages

26

Pages from-to

4463-4488

UT code for WoS article

000971071500001

EID of the result in the Scopus database

2-s2.0-85153970955