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22 Current news about the topic aerosols

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Aerosol researcher Yafang Cheng honored by Falling Walls Science Breakthroughs of the Year 2021

31-Aug-2021

Dr. Yafang Cheng has been selected as one of the 10 winners of the Falling Walls Science Breakthroughs of the Year 2021 in the category Physical Sciences for “Breaking the Wall to understanding COVID-19 transmission through aerosols”. “Top-class researchers globally are pushing the boundaries to ...

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Particulates are more dangerous than previously thought

Harmful substances are already formed in the atmosphere, not just in the human body

24-Mar-2021

Researchers at the Paul Scherrer Institute PSI have for the first time observed photochemical processes inside the smallest particles in the air. In doing so, they discovered that additional oxygen radicals that can be harmful to human health are formed in these aerosols under everyday ...

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Oxidation processes in combustion engines and in the atmosphere take the same routes

25-Feb-2021

Alkanes, an important component of fuels for combustion engines and an important class of urban trace gases, react via another reaction pathways than previously thought. These hydrocarbons, formerly called paraffins, thus produce large amounts of highly oxygenated compounds that can contribute to ...

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An ultrafast glimpse of the photochemistry of the atmosphere

15-Oct-2019

Researchers at Ludwig-Maximilians-Universitaet (LMU) in Munich have explored the initial consequences of the interaction of light with molecules on the surface of nanoscopic aerosols. The nanocosmos is constantly in motion. All natural processes are ultimately determined by the interplay between ...

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Smog laid bare: Precise analysis of the composition of particulate matter

22-May-2018

Smog is a problem. But the knowledge about its constituents - no longer. Researchers from several leading Warsaw scientific institutions have joined forces and developed a new, extremely precise method for the chemical analysis of suspended particulate matter. The method, easily adaptable in many ...

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Rapid pair production: Detection of a new reaction path in the atmosphere

04-Apr-2018

Scientists have now observed a particularly rapid type of pair production in the laboratory: Hydrocarbons double when two peroxyl radicals react with each other. This means that stable products with the carbon skeleton of both peroxyl radicals are formed, which very likely will have a peroxide ...

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A more complete picture of the nano world

28-Aug-2017

They may be tiny and invisible, says Xiaoji Xu , but the aerosol particles suspended in gases play a role in cloud formation and environmental pollution and can be detrimental to human health. Aerosol particles, which are found in haze, dust and vehicle exhaust, measure in the microns. One micron ...

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Water is surprisingly ordered on the nanoscale

26-May-2017

Nanometric-sized water drops are everywhere - in the air as droplets or aerosols, in our bodies as medication, and in the earth, within rocks and oil fields. To understand the behavior of these drops, it is necessary to know how they interact with their hydrophobic environment. This interaction ...

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Fine organic particles in the atmosphere are more often solid glass beads than liquid oil droplets

Glassy solid particles can facilitate long-distance atmospheric transport of hazardous organic pollutants

25-Apr-2017

Secondary organic aerosols (SOA) are formed upon oxidation of volatile organic compounds in the atmosphere. They account for a large fraction of fine particulate matter and have a strong influence on regional and global air quality. Traditionally, SOA particles were assumed to be oily liquid ...

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Self-amplifying chemical mechanism explains severe winter haze events

23-Dec-2016

In the aqueous phase of aerosol particles, nitrogen and sulfur oxides can react with each other and rapidly form high concentrations of fine particulate matter through a previously unrecognized mechanism. Persistent haze consisting of fine aerosol particles shrouds Beijing and large part of China ...

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