Atmos. Chem. Phys. Discuss., 8, 16501-16516, 2008
www.atmos-chem-phys-discuss.net/8/16501/2008/
doi:10.5194/acpd-8-16501-2008
© Author(s) 2008. This work is distributed
under the Creative Commons Attribution 3.0 License.
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This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
The time dependence of molecular iodine emission from Laminaria digitata
S. Dixneuf1, A. A. Ruth1, S. Vaughan1, R. M. Varma1, and J. Orphal1,2
1Department of Physics, University College Cork, Cork, Ireland
2Laboratoire Interuniversitaire des Systèmes Atmosphériques, Université de Paris-Est, Créteil, France

Abstract. We present the first in situ detection of molecular iodine emitted from the brown macroalga Laminaria digitata under natural stress conditions. We show that the release of I2 occurs in short, strong bursts with a complex time signature. The new data indicate that algal control of I2 release in the form of an oscillatory time-dependence may be based on a nonlinear autocatalytic reaction scheme which is closely linked to the production of H2O2.

Citation: Dixneuf, S., Ruth, A. A., Vaughan, S., Varma, R. M., and Orphal, J.: The time dependence of molecular iodine emission from Laminaria digitata, Atmos. Chem. Phys. Discuss., 8, 16501-16516, doi:10.5194/acpd-8-16501-2008, 2008.
 
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