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Indoor Particulate Matter And How to Limit Your Exposure

By Julia Bakker-Arkema and Marina Vance. This video was entered in the 2019 AAAR conference video competition and won 1st prize! Congratulations to Julia and Nina. We see and experience particulate matter, or aerosol particles, all around us. Aerosol particles make up the smog we see on our morning commutes, the trails of smoke that rise […]

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Viruses in the air

Text and voice by Linsey Marr, Professor, Virginia Tech. On twitter: @linseymarr Animations and editing by Marina Vance, Assistant Professor, University of Colorado Boulder. On twitter: @marinavance When we breathe, talk, laugh, cough, or sneeze, we release droplets into the air. Some of these are microscopic and can remain floating in the air for an […]

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How does microbial growth in carpet dust impact microbial volatile organic compounds?

By Sarah Haines, PhD Candidate, The Ohio State University, @SarahRHaines   We are excited to announce the recent publication of our paper, titled “Modeling microbial growth in carpet dust exposed to diurnal variations in relative humidity using the “Time-of-Wetness” framework”  in the journal Indoor Air. This work is a culmination of research investigating how changes in […]

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Disinfectants and COVID-19

By: Delphine Farmer (@ChemDelphine) and Marina Vance (@marinavance) With growing concerns over Coronavirus, more people are turning to the power of disinfectants to clean surfaces – and that is giving rise to a new set of indoor chemistry. While ordinary soap is surprisingly effective at breaking down the Coronavirus, bleach, alcohol, and ammonia are all […]

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Organic compounds in indoor air like to accumulate in paint

By Lucas Algrim, a recent PhD student in Paul Ziemann’s research group at University of Colorado Boulder. A range of volatile organic compounds (VOCs) can be found in the indoor environment.  Many VOCs will be ventilated out of the building by the air handling system, but they can also sorb to indoor surfaces, in other […]

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Ozone: Friend or Foe?

By Julia Bakker-Arkema and Marina Vance.   When we think of “ozone”, many of us think about the hole in the ozone layer, located high up in the stratosphere—about 12 kilometers, or 7 miles above the earth’s surface. It’s much higher than Mount Everest and most types of clouds. The ozone layer is important because […]

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What I learned from the 1st ISIAQ webinar on spread of infectious diseases in indoor environments

By Shelly Miller, Professor at University of Colorado Boulder. On Twitter: @ShellyMBoulder ISIAQ, the International Society of Indoor Air Quality and Climate is an international, independent, multidisciplinary, scientific, non-profit organization “whose purpose is to support the creation of healthy, comfortable and productive indoor environments.” The ISIAQ Board of Directors and The Academy of Fellows are hosting […]

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What you wear affects what you breathe

By Dusan Licina (EPFL – École polytechnique fédérale de Lausanne,@licinadusan), Glenn Morison (University of North Carolina, @gcmorr), Gabriel Bekö (Denmark Technical University) Charles Weschler (Denmark Technical University and Rutgers University,@CJWeschler) and William Nazaroff (University of California Berkeley)     Take a couple of seconds to think about how much time we spend every day wearing […]

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Bleach cleaning: indoor emissions, chemistry, and impacts on air quality

By Jimmy Mattila, a graduate student in the Farmer Group at Colorado State University (Twitter: @JimmyMattila)   Bleach, an aqueous solution consisting of sodium hypochlorite (NaOCl) and other oxidizers/surfactants, is a commonly used cleaning product in household and workplace environments. The efficacy of bleach stems from its potent antimicrobial and oxidizing properties. Bleach cleaning emits […]

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