Advanced

Cloud Droplet Activation of Amino Acid Aerosol Particles.

Kristensson, Adam LU ; Rosenørn, Thomas and Bilde, Merete (2010) In Journal of physical chemistry. A 114(1). p.379-386
Abstract
In this work we investigated the ability of a series of amino acids to act as cloud condensation nuclei using a static thermal gradient diffusion type cloud condensation nucleus counter. Particles of pure dry l-glycine, glycyl-glycine, l-serine, l-methionine, l-glutamic acid, l-aspartic acid, and l-tyrosine were studied as well as internally mixed dry particles containing ammonium sulfate and one or two of the following amino acids: l-methionine, l-aspartic acid, or l-tyrosine. The amino acids ranged in water solubility from high (>100 g/L), intermediate (10-100 g/L), low (3-10 g/L), to very low (<3 g/L). With the exception of l-methionine and l-tyrosine, all the studied pure amino acid particles activated as though they were fully... (More)
In this work we investigated the ability of a series of amino acids to act as cloud condensation nuclei using a static thermal gradient diffusion type cloud condensation nucleus counter. Particles of pure dry l-glycine, glycyl-glycine, l-serine, l-methionine, l-glutamic acid, l-aspartic acid, and l-tyrosine were studied as well as internally mixed dry particles containing ammonium sulfate and one or two of the following amino acids: l-methionine, l-aspartic acid, or l-tyrosine. The amino acids ranged in water solubility from high (>100 g/L), intermediate (10-100 g/L), low (3-10 g/L), to very low (<3 g/L). With the exception of l-methionine and l-tyrosine, all the studied pure amino acid particles activated as though they were fully soluble, although Kohler theory modified to account for limited solubility suggests that the activation of the intermediate and low solubility amino acids l-serine, l-glutamic acid, and l-aspartic acid should be limited by solubility. Activation of mixed particles containing at least 60% dry mass of l-tyrosine was limited by solubility, but the activation of the other investigated mixed particles behaved as if fully soluble. In general, the results show that particles containing amino acids at atmospherically relevant mixture ratios are good cloud condensation nuclei. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of physical chemistry. A
volume
114
issue
1
pages
379 - 386
publisher
The American Chemical Society
external identifiers
  • wos:000273268900045
  • pmid:20000558
  • scopus:75249092017
ISSN
1520-5215
DOI
10.1021/jp9055329
project
MERGE
language
English
LU publication?
yes
id
f186a518-b06e-44b0-ad2c-a0d5aef89b64 (old id 1523702)
date added to LUP
2010-01-15 10:10:22
date last changed
2018-05-29 12:07:30
@article{f186a518-b06e-44b0-ad2c-a0d5aef89b64,
  abstract     = {In this work we investigated the ability of a series of amino acids to act as cloud condensation nuclei using a static thermal gradient diffusion type cloud condensation nucleus counter. Particles of pure dry l-glycine, glycyl-glycine, l-serine, l-methionine, l-glutamic acid, l-aspartic acid, and l-tyrosine were studied as well as internally mixed dry particles containing ammonium sulfate and one or two of the following amino acids: l-methionine, l-aspartic acid, or l-tyrosine. The amino acids ranged in water solubility from high (&gt;100 g/L), intermediate (10-100 g/L), low (3-10 g/L), to very low (&lt;3 g/L). With the exception of l-methionine and l-tyrosine, all the studied pure amino acid particles activated as though they were fully soluble, although Kohler theory modified to account for limited solubility suggests that the activation of the intermediate and low solubility amino acids l-serine, l-glutamic acid, and l-aspartic acid should be limited by solubility. Activation of mixed particles containing at least 60% dry mass of l-tyrosine was limited by solubility, but the activation of the other investigated mixed particles behaved as if fully soluble. In general, the results show that particles containing amino acids at atmospherically relevant mixture ratios are good cloud condensation nuclei.},
  author       = {Kristensson, Adam and Rosenørn, Thomas and Bilde, Merete},
  issn         = {1520-5215},
  language     = {eng},
  number       = {1},
  pages        = {379--386},
  publisher    = {The American Chemical Society},
  series       = {Journal of physical chemistry. A},
  title        = {Cloud Droplet Activation of Amino Acid Aerosol Particles.},
  url          = {http://dx.doi.org/10.1021/jp9055329},
  volume       = {114},
  year         = {2010},
}