Hydroxyl Radical

What does the growth of greenhouse gases mean?

A spike in the greenhouse gas methane in 2020 may be explained in part by a drop in nitrogen oxide emissions during the covid-19 pandemic

During thunderstorms, leaves from trees and other plants create mini electric discharges that can significantly alter the surrounding air quality. But researchers are unsure if this is beneficial or harmful.

When thunderstorms rumble overhead, weak electrical discharges—called corona—can occur on tree leaves. A new study found coronas create large amounts of atmospheric chemicals that could impact air quality around forests, according to a team of Penn State scientists.

Atmospheric researchers have discovered a mechanism that allows nuclei for ice clouds to form and rapidly grow in the upper troposphere. Although the conditions for nucleus formation are only fulfilled in the Asian monsoon region, the mechanism is expected to have an impact on ice cloud formation across large parts of the Northern Hemisphere.

Haze is formed when a cocktail of various gaseous pollutants is oxidized and forms particulate matter diffusing sunlight. This process is mainly mediated by hydroxyl radicals (OH), and researchers have now discovered a new route to their formation. This newly discovered radical-building mechanism could also offer new perspectives for air purification and the energy industry, as the study shows.

Haze is formed when a cocktail of various gaseous pollutants is oxidized and forms particulate matter diffusing sunlight. This process is mainly mediated by hydroxyl radicals (OH), and researchers have now discovered a new route to their formation. This newly discovered radical-building mechanism could also offer new perspectives for air purification and the energy industry, as the study published in Angewandte…

Faculty Advisor: Dr. Donald Blake, University of California, Irvine

A new analysis of satellite data finds that the record surge in atmospheric methane emissions from 2020 to 2022 was driven by increased inundation and water storage in wetlands, combined with a slight decrease in atmospheric hydroxide (OH). The results have implications for efforts to decrease atmospheric methane and mitigate its impact on climate change.

Antitumor agents must kill off cancer cells while protecting healthy tissue and create no toxic side-effects. A novel approach based on "self-immolative" polyferrocenes—copolymers that split apart into their components as soon as they enter a tumor cell—could meet these demands. The drugs they hold then synergistically cause an abrupt increase in free radicals and incapacitate the defenses of tumor cells, as…

Hydrogen's potential as a clean fuel could be limited by a chemical reaction in the lower atmosphere, according to research from Princeton University and the National Oceanic and Atmospheric Association.

Put away the Little Trees air freshener, Panasonic has a more advanced solution the next time you want to make your car smell its best..

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High levels of hydroxyl radicals (OH) can be generated indoors, simply due to the presence of people and ozone.

Hydroxyl radicals are highly reactive chemical species that attack most of the organic molecules.

People typically spend 90% of their lives inside, at home, at work, or in transport. Within these enclosed spaces, occupants are exposed to a multitude of chemicals from various sources, including outdoor pollutants penetrating indoors, gaseous emissions from building materials and furnishings, and products of our own activities such as cooking and cleaning. In addition, we are ourselves potent mobile emission…

Recently, a joint research team from National Time Service Center (NTSC) of the Chinese Academy of Sciences (CAS), Shanghai Astronomical Observatory (SHAO) of CAS and SKA Observatory used the Shanghai Tianma Radio Telescope to search for 4.7 GHz OH masers in 155 northern star forming regions and discovered eight new sources.

An international effort to measure air quality in South Korea, a region with complex sources of pollution, may provide new insights into the atmospheric chemistry that produces ozone pollution, according to a team of scientists.

Recycled materials contribute to a potential pollutant-neutralizing paint

Ethylene is sometimes called the most important chemical in the petrochemical industry because it serves as the feedstock for a huge range of everyday products. It's used to produce antifreeze, vinyl, synthetic rubber, foam insulation, and plastics of all kinds.