Secondary oxidants produced during heterogeneous processing of aromatic pollutants by gaseous ozone

October 27, 2015, University of Kentucky
Photo by A. Eugene of Ph.D. Students Elizabeth Pillar and Ruixin Zhou.

A research study performed by the Environmental Chemistry group of the University of Kentucky reports the production of secondary oxidants such as hydroxyl (HO) and hydroperoxil (HO2) radicals, and hydrogen peroxide (H2O2) during the heterogeneous processing of aromatic pollutants by gaseous ozone.

The work shows how the heterogeneous oxidation of catechol, a model compound representing the fraction of surfaces present in particulate matter, proceeds under variable relative humidity.

Remarkably, the authors identified that polyhydroxylated biphenyls and terphenyls products are produced during reactions expected to proceed under atmospheric conditions.

The article published in the Journal of Physical Chemistry A on October 15 (DOI: 10.1021/acs.jpca.5b07914) contributes to the on environmental chemistry and aerosol processes highlighted by the journal.

Explore further: How the complexity of interfacial chemistry translates into atmospheric changes

Related Stories

Conifer scent influences climate

January 9, 2014

(Phys.org) —Conifers emit volatile hydrocarbons, primarily terpenes, which we experience as the characteristic smell of the woods. In a complicated series of reactions involving ozone and sulfur dioxide, these compounds ...

Cooperative SO2 and NOx aerosol formation in haze pollution

January 29, 2014

Air pollution in China has exhibited noticeable changes over the past 30 years, shifting from point-source pollution (around factories and industrial plants) in the 1980s to urban pollution in the 1990s. Since the start of ...

Recommended for you

Targeting 'hidden pocket' for treatment of stroke and seizure

January 19, 2019

The ideal drug is one that only affects the exact cells and neurons it is designed to treat, without unwanted side effects. This concept is especially important when treating the delicate and complex human brain. Now, scientists ...

Using bacteria to create a water filter that kills bacteria

January 18, 2019

More than one in 10 people in the world lack basic drinking water access, and by 2025, half of the world's population will be living in water-stressed areas, which is why access to clean water is one of the National Academy ...

Hand-knitted molecules

January 18, 2019

Molecules are usually formed in reaction vessels or laboratory flasks. An Empa research team has now succeeded in producing molecules between two microscopically small, movable gold tips – in a sense as a "hand-knitted" ...

Artificially produced cells communicate with each other

January 18, 2019

Friedrich Simmel and Aurore Dupin, researchers at the Technical University of Munich (TUM), have for the first time created artificial cell assemblies that can communicate with each other. The cells, separated by fatty membranes, ...

This computer program makes pharma patents airtight

January 17, 2019

Routes to making life-saving medications and other pharmaceutical compounds are among the most carefully protected trade secrets in global industry. Building on recent work programming computers to identify synthetic pathways ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.