| Title: | Reaction of DMS and HOBr as a Sink for Marine DMS and an Inhibitor of Bromoform Formation |
| Author(s): | Muller E; von Gunten U; Bouchet S; Droz B; Winkel LHE; |
| Address: | "Department of Water Resources and Drinking Water (W+T), Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, CH-8600 Duebendorf, Switzerland. Department of Environment Systems (D-USYS), ETH Zurich, Swiss Federal Institute of Technology, Institute of Biogeochemistry and Pollutant Dynamics (IBP), Universitatsstrasse 16, 8092 Zurich, Switzerland. School of Architecture, Civil and Environmental Engineering (ENAC), Ecole Polytechnique Federale de Lausanne (EPFL), 1015 Lausanne, Switzerland" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "Recently, we suggested that hypobromous acid (HOBr) is a sink for the marine volatile organic sulfur compound dimethyl sulfide (DMS). However, HOBr is also known to react with reactive moieties of dissolved organic matter (DOM) such as phenolic compounds to form bromoform (CHBr(3)) and other brominated compounds. The reaction between HOBr and DMS may thus compete with the reaction between HOBr and DOM. To study this potential competition, kinetic batch and diffusion-reactor experiments with DMS, HOBr, and DOM were performed. Based on the reaction kinetics, we modeled concentrations of DMS, HOBr, and CHBr(3) during typical algal bloom fluxes of DMS and HOBr (10(-13) to 10(-9) M s(-1)). For an intermediate to high HOBr flux (>/=10(-11) M s(-1)) and a DMS flux |
| Keywords: | *Bromates Sulfides *Trihalomethanes bromine degradation diffusion dissolved organic matter kinetics; |
| Notes: | "MedlineMuller, Emanuel von Gunten, Urs Bouchet, Sylvain Droz, Boris Winkel, Lenny H E eng Research Support, Non-U.S. Gov't 2021/04/01 Environ Sci Technol. 2021 Apr 20; 55(8):5547-5558. doi: 10.1021/acs.est.0c08189. Epub 2021 Mar 31" |
