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Deliquescence of malonic, succinic, glutaric, and adipic acid particles. Lipetz, Sarah R.; Mak, Jackson; Parsons, Matthew T.; Bertram, Allan K.
Abstract
In order to understand and predict the role of organic particles in the atmosphere their deliquescence behavior must be understood. Using an optical microscope coupled to a flow cell, we investigated the deliquescence of malonic, succinic, glutaric, and adipic acid particles with sizes ranging from 2 to 40 mm. Deliquescence relative humidities were determined for temperatures ranging from 293 to 243 K. Over this temperature range both succinic acid and adipic acid deliquesced at approximately 100% relative humidity, whereas malonic acid and glutaric acid deliquesced at significantly lower relative humidities. These results are generally in good agreement with previous studies and are within 3% of calculations based on the UNIQUAC (universal quasi-chemical) Functional Group Activity Coefficients (UNIFAC) model and recently published interaction parameters. Our studies also include measurements at temperatures below the eutectic temperatures. At these temperatures, ice did not nucleate; rather the particles underwent deliquescence to form metastable solution droplets. This indicates that solid dicarboxylic acids are not good ice nuclei above 243 K and hence will probably not play a role in ice cloud formation at these temperatures. An edited version of this paper was published by AGU. Copyright 2004 American Geophysical Union.
Item Metadata
Title |
Deliquescence of malonic, succinic, glutaric, and adipic acid particles.
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Creator | |
Publisher |
American Geophysical Union
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Date Issued |
2004-03
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Description |
In order to understand and predict the role of organic particles in the atmosphere their deliquescence behavior must be understood.
Using an optical microscope coupled to a flow cell, we investigated the deliquescence of malonic, succinic, glutaric, and adipic acid
particles with sizes ranging from 2 to 40 mm. Deliquescence relative humidities were determined for temperatures ranging from 293 to 243 K.
Over this temperature range both succinic acid and adipic acid deliquesced at approximately 100% relative humidity, whereas malonic acid and
glutaric acid deliquesced at significantly lower relative humidities. These results are generally in good agreement with previous studies and
are within 3% of calculations based on the UNIQUAC (universal quasi-chemical) Functional Group Activity Coefficients (UNIFAC) model and recently
published interaction parameters. Our studies also include measurements at temperatures below the eutectic temperatures. At these temperatures,
ice did not nucleate; rather the particles underwent deliquescence to form metastable solution droplets. This indicates that solid dicarboxylic
acids are not good ice nuclei above 243 K and hence will probably not play a role in ice cloud formation at these temperatures. An edited version of this paper was published by AGU. Copyright 2004 American Geophysical Union.
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Genre | |
Type | |
Language |
eng
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Date Available |
2016-11-07
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0041863
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URI | |
Affiliation | |
Citation |
Parsons, Matthew T., Mak, Jackson, Lipetz, Sarah R., Bertram, Allan K. 2004. Deliquescence of malonic, succinic, glutaric, and adipic acid particles. Journal of Geophysical Research Atmospheres 109(6) D06212
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Publisher DOI |
10.1029/2003JD004075
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Peer Review Status |
Reviewed
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Scholarly Level |
Faculty
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Copyright Holder |
Bertram, Allan K.
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Rights URI | |
Aggregated Source Repository |
DSpace
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Item Citations and Data
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International