Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published May 15, 2001 | Published
Journal Article Open

Iodine oxide homogeneous nucleation: An explanation for coastal new particle production


A series of laboratory experiments on the chemical composition of aerosol particles formed after photodissociation of CH_2I_2, a major volatile alkyl halide released from macroalgae, have been performed in a laboratory scale reaction chamber using on-line atmospheric pressure chemical ionization mass spectrometry (APCI/MS). Based on the mass spectrometric results and the molecular properties of iodine oxides, we suggest that the self-nucleation of iodine oxides provides an efficient source of natural condensable material in coastal environments and discuss this concept focusing on OIO as one potential key species for new particle formation. The presented hypothesis not only fits the measured enrichment of iodine species in submicrometer particles, but also can explain the frequently observed nucleation bursts in the coastal boundary layer.

Additional Information

Copyright 2001 by the American Geophysical Union. (Received September 27, 2000; revised February 19, 2001; accepted February 20, 2001.) Paper number 2000GL012399. This work was supported by the EC, Environment and Climate program, Contract No. ENV4-CT97-0391 (NUCVOC) and ENV4-CT97-0526 (PARFORCE).

Attached Files

Published - grl14261.pdf


Files (508.4 kB)
Name Size Download all
508.4 kB Preview Download

Additional details

August 19, 2023
October 18, 2023