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Cryogenic Aerosol Generation: Airborne Mist Particles Surrounding Liquid Nitrogen

Aerosol mist particles generated near the surface of a liquid nitrogen container were measured and analyzed. The particles present at various distances from the boiling surface of liquid nitrogen were detected using an optical particle counter. In this experiment, 3 micrometer particles exhibited a...

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Autor principal: Lee, Byung Uk
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7037935/
https://www.ncbi.nlm.nih.gov/pubmed/32046203
http://dx.doi.org/10.3390/ijerph17031071
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author Lee, Byung Uk
author_facet Lee, Byung Uk
author_sort Lee, Byung Uk
collection PubMed
description Aerosol mist particles generated near the surface of a liquid nitrogen container were measured and analyzed. The particles present at various distances from the boiling surface of liquid nitrogen were detected using an optical particle counter. In this experiment, 3 micrometer particles exhibited a more than 100-fold increase in concentration due to the liquid nitrogen surface. However, 0.3 micrometer and 10 micrometer particles showed smaller variations (2% to 79%) in their concentrations in the vicinity of liquid nitrogen. The distance from the boiling surface of the liquid nitrogen strongly affected the variations in particle concentration. The variations in aerosol concentrations were significant within 20 cm of the liquid nitrogen surface. These results can be considered as a useful quantitative environmental guideline in cryogenic studies that use liquid nitrogen, and this concept can be applied to cryogenic aerosol mist generation mechanisms.
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spelling pubmed-70379352020-03-10 Cryogenic Aerosol Generation: Airborne Mist Particles Surrounding Liquid Nitrogen Lee, Byung Uk Int J Environ Res Public Health Technical Note Aerosol mist particles generated near the surface of a liquid nitrogen container were measured and analyzed. The particles present at various distances from the boiling surface of liquid nitrogen were detected using an optical particle counter. In this experiment, 3 micrometer particles exhibited a more than 100-fold increase in concentration due to the liquid nitrogen surface. However, 0.3 micrometer and 10 micrometer particles showed smaller variations (2% to 79%) in their concentrations in the vicinity of liquid nitrogen. The distance from the boiling surface of the liquid nitrogen strongly affected the variations in particle concentration. The variations in aerosol concentrations were significant within 20 cm of the liquid nitrogen surface. These results can be considered as a useful quantitative environmental guideline in cryogenic studies that use liquid nitrogen, and this concept can be applied to cryogenic aerosol mist generation mechanisms. MDPI 2020-02-07 2020-02 /pmc/articles/PMC7037935/ /pubmed/32046203 http://dx.doi.org/10.3390/ijerph17031071 Text en © 2020 by the author. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Technical Note
Lee, Byung Uk
Cryogenic Aerosol Generation: Airborne Mist Particles Surrounding Liquid Nitrogen
title Cryogenic Aerosol Generation: Airborne Mist Particles Surrounding Liquid Nitrogen
title_full Cryogenic Aerosol Generation: Airborne Mist Particles Surrounding Liquid Nitrogen
title_fullStr Cryogenic Aerosol Generation: Airborne Mist Particles Surrounding Liquid Nitrogen
title_full_unstemmed Cryogenic Aerosol Generation: Airborne Mist Particles Surrounding Liquid Nitrogen
title_short Cryogenic Aerosol Generation: Airborne Mist Particles Surrounding Liquid Nitrogen
title_sort cryogenic aerosol generation: airborne mist particles surrounding liquid nitrogen
topic Technical Note
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7037935/
https://www.ncbi.nlm.nih.gov/pubmed/32046203
http://dx.doi.org/10.3390/ijerph17031071
work_keys_str_mv AT leebyunguk cryogenicaerosolgenerationairbornemistparticlessurroundingliquidnitrogen