%0 Journal Article %1 Epstein:2010p2678 %A Epstein, Scott A %A Riipinen, Ilona %A Donahue, Neil M %D 2010 %J Environmental Science & Technology %K Alpha-Pinene, Beta-Pinene Bond-Dissociation Energies, Evaporation Ozonolysis, Parameterization, Particles, Rates, Thermodenuder, Vapor-Pressures, Volatility, %N 2 %P 743--748 %R 10.1021/es902497z %T A Semiempirical Correlation between Enthalpy of Vaporization and Saturation Concentration for Organic Aerosol %U http://pubs.acs.org/doi/abs/10.1021/es902497z %V 44 %X To model the temperature-induced partitioning of semivolatile organics in laboratory experiments or atmospheric models, one must know the appropriate heats of vaporization. Current treatments typically assume a constant value of the heat of vaporization or else use specific values from a small set of surrogate compounds. With published experimental vapor-pressure data from over 800 organic Compounds, we have developed a semiempirical correlation between the saturation concentration (C*, mu g m(-3)) and the heat of vaporization (Delta H-VAP, kJ mol(-1)) for organics in the volatility basis set. Near room temperature, Delta H-VAP = -11 log C-10(300)* + 129. Knowledge of the relationship between C* and Delta H-VAP constrains a free parameter in thermodenuder data analysis. A thermodenuder model using our Delta H-VAP values agrees well with thermal behavior observed in laboratory experiments.

@article{Epstein:2010p2678, abstract = {To model the temperature-induced partitioning of semivolatile organics in laboratory experiments or atmospheric models, one must know the appropriate heats of vaporization. Current treatments typically assume a constant value of the heat of vaporization or else use specific values from a small set of surrogate compounds. With published experimental vapor-pressure data from over 800 organic Compounds, we have developed a semiempirical correlation between the saturation concentration (C*, mu g m(-3)) and the heat of vaporization (Delta H-VAP, kJ mol(-1)) for organics in the volatility basis set. Near room temperature, Delta H-VAP = -11 log C-10(300)* + 129. Knowledge of the relationship between C* and Delta H-VAP constrains a free parameter in thermodenuder data analysis. A thermodenuder model using our Delta H-VAP values agrees well with thermal behavior observed in laboratory experiments.}, added-at = {2010-06-22T19:38:37.000+0200}, affiliation = {Carnegie Mellon Univ, Ctr Atmospher Particle Studies, Pittsburgh, PA 15213 USA}, author = {Epstein, Scott A and Riipinen, Ilona and Donahue, Neil M}, biburl = {https://www.bibsonomy.org/bibtex/2c912925892c0fd40ed90abb36a0897f4/gsmith}, date-added = {2010-03-29 14:10:03 -0400}, date-modified = {2010-03-29 14:10:03 -0400}, doi = {10.1021/es902497z}, interhash = {0fd6144bcee08e71fd2b449388507096}, intrahash = {c912925892c0fd40ed90abb36a0897f4}, journal = {Environmental Science {\&} Technology}, keywords = {Alpha-Pinene, Beta-Pinene Bond-Dissociation Energies, Evaporation Ozonolysis, Parameterization, Particles, Rates, Thermodenuder, Vapor-Pressures, Volatility,}, language = {English}, local-url = {file://localhost/Users/geoffreysmith/Documents/Papers/Environmental%20Science%20&%20Technology/2010/Environmental%20Science%20&%20Technology,%2044,%20743-748%202010.pdf}, month = Jan, number = 2, pages = {743--748}, pmid = {000273433200033}, rating = {0}, timestamp = {2010-06-22T19:38:44.000+0200}, title = {A Semiempirical Correlation between Enthalpy of Vaporization and Saturation Concentration for Organic Aerosol}, uri = {papers://E88B624E-D406-46FF-9D95-BB9C1AAE3FDC/Paper/p2678}, url = {http://pubs.acs.org/doi/abs/10.1021/es902497z}, volume = 44, year = 2010 }