“Secondary organic aerosol”的意思、由来-开放百科全书

词条

Secondary organic aerosol

释义

References
Bibliography

A secondary organic aerosol (SOA) is a molecule produced via oxidation over several generations of a parent organic molecule.^[1] In contrast to primary organic aerosols, which are emitted directly from the biosphere, secondary organic aerosols are formed via homogeneous nucleation through the successive oxidation of gas-phase organic compounds. These gas-phase species exert high vapor pressures, meaning they are volatile and stable in the gas-phase, however, upon oxidation, the increased polarity of the molecules results in a reduction of vapor pressure. After sufficient oxidation, the vapor pressure is sufficiently low that the gas-phase compound partitions into the solid-phase, producing secondary organic matter.

SOAs represent a significant proportion of aerosols contained in the troposphere.^[1]

A common misconception is that the aerosol refers to the solid phase of the compound, where in reality, by definition, it is the combination of the gas- and solid-phases which constitute the aerosol.

References

1. ^¹{{Cite journal|title = Secondary Organic Aerosol Formation from Low-NOx Photooxidation of Dodecane: Evolution of Multigeneration Gas-Phase Chemistry and Aerosol Composition|journal = The Journal of Physical Chemistry A|date = 2012-06-21|issn = 1089-5639|pages = 6211–6230|volume = 116|issue = 24|doi = 10.1021/jp211531h|pmid = 22424261|first = Lindsay D.|last = Yee|first2 = Jill S.|last2 = Craven|first3 = Christine L.|last3 = Loza|first4 = Katherine A.|last4 = Schilling|first5 = Nga Lee|last5 = Ng|first6 = Manjula R.|last6 = Canagaratna|first7 = Paul J.|last7 = Ziemann|first8 = Richard C.|last8 = Flagan|first9 = John H.|last9 = Seinfeld|bibcode = 2012JPCA..116.6211Y}}

Bibliography

{{cite journal | doi = 10.1126/science.aar4925 | pmid = 29449479 | title = The changing face of urban air pollution | journal = Science | volume = 359 | issue = 6377 | pages = 744–745 | year = 2018 | last1 = Lewis | first1 = Alastair C. | bibcode = 2018Sci...359..744L | url = http://eprints.whiterose.ac.uk/127939/1/Science6377_Lewis.pdf }}
{{cite journal | doi = 10.1126/science.aaq0524 | pmid = 29449485 | title = Volatile chemical products emerging as largest petrochemical source of urban organic emissions | journal = Science | volume = 359 | issue = 6377 | pages = 760–764 | year = 2018 | last1 = McDonald | first1 = Brian C. | last2 = De Gouw | first2 = Joost A. | last3 = Gilman | first3 = Jessica B. | last4 = Jathar | first4 = Shantanu H. | last5 = Akherati | first5 = Ali | last6 = Cappa | first6 = Christopher D. | last7 = Jimenez | first7 = Jose L. | last8 = Lee-Taylor | first8 = Julia | last9 = Hayes | first9 = Patrick L. | last10 = McKeen | first10 = Stuart A. | last11 = Cui | first11 = Yu Yan | last12 = Kim | first12 = Si-Wan | last13 = Gentner | first13 = Drew R. | last14 = Isaacman-Vanwertz | first14 = Gabriel | last15 = Goldstein | first15 = Allen H. | last16 = Harley | first16 = Robert A. | last17 = Frost | first17 = Gregory J. | last18 = Roberts | first18 = James M. | last19 = Ryerson | first19 = Thomas B. | last20 = Trainer | first20 = Michael | bibcode = 2018Sci...359..760M }}

3 : Aerosols|Atmosphere of Earth|Atmospheric dynamics

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