Hydroxyl Radical Generation from Environmentally Persistent Free Radicals (EPFRs) in PM2.5
Environmental Science & Technology2013Vol. 48(8), pp. 4266–4272
Citations Over TimeTop 10% of 2013 papers
Abstract
Hydroxyl radicals were generated from an aqueous suspension of ambient PM2.5 and detected utilizing 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) as a spin trap coupled with electron paramagnetic resonance (EPR) spectroscopy. Results from this study suggested the importance of environmentally persistent free radicals (EPFRs) in PM2.5 to generate significant levels of ·OH without the addition of H2O2. Particles for which the EPFRs were allowed to decay over time induced less hydroxyl radical. Additionally, higher particle concentrations produced more hydroxyl radical. Some samples did not alter hydroxyl radical generation when the solution was purged by air. This is ascribed to internal, rather than external surface associated EPFRs.
Related Papers
- → Experimental evidence for efficient hydroxyl radical regeneration in isoprene oxidation(2013)189 cited
- → The Formation of Ozone-Hydroxyl Mixture in Corona Discharge and Lifetime of Hydroxyl Radicals(2021)33 cited
- → Microbicidal Activity of Artificially Generated Hydroxyl Radicals(2014)10 cited
- → Free radical processes in green tea polyphenols (GTP) investigated by electron paramagnetic resonance (EPR) spectroscopy(2008)15 cited
- DETERMINATION OF HYDROXYL RADICALS IN AQUATIC ENVIRONMENT WITH A NEW MOLECULAR PROBE(2003)