| Title: | OH radical reactivity of pesticides adsorbed on aerosol materials: first results of experiments with filter samples |
| Author(s): | Palm WU; Millet M; Zetzsch C; |
| Address: | "Abteilung Atmospharische Chemie, Fraunhofer Institut fur Toxikologie und Aerosolforschung, Nikolai-Fuchs-Strasse 1, Hannover, 30625, Germany" |
| ISSN/ISBN: | 0147-6513 (Print) 0147-6513 (Linking) |
| Abstract: | "Preliminary results of a new method to investigate the OH radical reactivity of semi-volatile organic compounds (e.g., pesticides) are presented. Terbuthylazine, simazine, sodium benzoate, and bromoxynil were adsorbed on highly disperse silicon dioxide powder as an unreactive carrier at a thickness well below one monolayer. The coated material was suspended in air as an aerosol, sampled on filters, and exposed in an 840-liter Duran chamber to OH radicals, produced by photolysis of hydrogen peroxide in the gas phase. Sunlamps on top of the chamber were used as cold light sources [T(aerosol) approximately 25 degreesC]. OH radical concentrations (10(5) |
| Keywords: | Aerosols/chemistry *Environmental Pollution Herbicides/*chemistry Hydroxyl Radical/*chemistry Methylurea Compounds/chemistry Nitriles/chemistry *Phenylurea Compounds Photolysis Silicon Dioxide/chemistry Simazine/chemistry Sodium Benzoate/chemistry Triazin; |
| Notes: | "MedlinePalm, W U Millet, M Zetzsch, C eng Research Support, Non-U.S. Gov't Netherlands 1998/10/03 Ecotoxicol Environ Saf. 1998 Sep; 41(1):36-43. doi: 10.1006/eesa.1998.1664" |
