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Comparisons between Hygroscopic Measurements and UNIFAC Model Predictions for Dicarboxylic Organic Aerosol Mixtures
Joint Authors
Lee, Jae Young
Hildemann, Lynn M.
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-06-24
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Hygroscopic behavior was measured at 12°C over aqueous bulk solutions containing dicarboxylic acids, using a Baratron pressure transducer.
Our experimental measurements of water activity for malonic acid solutions (0–10 mol/kg water) and glutaric acid solutions (0–5 mol/kg water) agreed to within 0.6% and 0.8% of the predictions using Peng’s modified UNIFAC model, respectively (except for the 10 mol/kg water value, which differed by 2%).
However, for solutions containing mixtures of malonic/glutaric acids, malonic/succinic acids, and glutaric/succinic acids, the disagreements between the measurements and predictions using the ZSR model or Peng’s modified UNIFAC model are higher than those for the single-component cases.
Measurements of the overall water vapor pressure for 50 : 50 molar mixtures of malonic/glutaric acids closely followed that for malonic acid alone.
For mixtures of malonic/succinic acids and glutaric/succinic acids, the influence of a constant concentration of succinic acid on water uptake became more significant as the concentration of malonic acid or glutaric acid was increased.
American Psychological Association (APA)
Lee, Jae Young& Hildemann, Lynn M.. 2013. Comparisons between Hygroscopic Measurements and UNIFAC Model Predictions for Dicarboxylic Organic Aerosol Mixtures. Advances in Meteorology،Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-506357
Modern Language Association (MLA)
Lee, Jae Young& Hildemann, Lynn M.. Comparisons between Hygroscopic Measurements and UNIFAC Model Predictions for Dicarboxylic Organic Aerosol Mixtures. Advances in Meteorology No. 2013 (2013), pp.1-9.
https://search.emarefa.net/detail/BIM-506357
American Medical Association (AMA)
Lee, Jae Young& Hildemann, Lynn M.. Comparisons between Hygroscopic Measurements and UNIFAC Model Predictions for Dicarboxylic Organic Aerosol Mixtures. Advances in Meteorology. 2013. Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-506357
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-506357