Send to

Choose Destination
See comment in PubMed Commons below
Science. 2002 Oct 25;298(5594):814-7.

Heterogeneous atmospheric aerosol production by acid-catalyzed particle-phase reactions.

Author information

Department of Environmental Sciences and Engineering, CB 7431, Rosenau Hall, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.


According to evidence from our laboratory, acidic surfaces on atmospheric aerosols lead to potentially multifold increases in secondary organic aerosol (SOA) mass. Experimental observations using a multichannel flow reactor, Teflon (polytetrafluoroethylene) film bag batch reactors, and outdoor Teflon-film smog chambers strongly confirm that inorganic acids, such as sulfuric acid, catalyze particle-phase heterogeneous reactions of atmospheric organic carbonyl species. The net result is a large increase in SOA mass and stabilized organic layers as particles age. If acid-catalyzed heterogeneous reactions of SOA products are included in current models, the predicted SOA formation will be much greater and could have a much larger impact on climate forcing effects than we now predict.

Free full text
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire
    Loading ...
    Support Center