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Full-Text Articles in Environmental Chemistry
Yellowstone National Park - Pems Snowcoach Measurements, University Of Denver
Yellowstone National Park - Pems Snowcoach Measurements, University Of Denver
Non-Road Vehicle Data
Relevant Publications
Environmental Science & Technology Publication (2006)
Air & Waste Management Publication (2009)
Environmental Science & Technology Publication (2014)
Yellowstone National Park - Feat Snowmobile Measurements, University Of Denver
Yellowstone National Park - Feat Snowmobile Measurements, University Of Denver
Non-Road Vehicle Data
Relevant Publications
Environmental Science & Technology Publication (1999)
Environmental Science & Technology Publication (2001)
Environmental Science & Technology Publication (2005)
Texas - San Marcos Weigh Station 1998, University Of Denver
Texas - San Marcos Weigh Station 1998, University Of Denver
FEAT Heavy-Duty Vehicle Measurements
Relevant Publications
Environmental Science & Technology Publication
Switzerland - Canton Of Uri 1998, University Of Denver
Switzerland - Canton Of Uri 1998, University Of Denver
FEAT Heavy-Duty Vehicle Measurements
Relevant Publications
Environmental Science & Technology Publication
California - Port Of Los Angeles, University Of Denver
California - Port Of Los Angeles, University Of Denver
FEAT Heavy-Duty Vehicle Measurements
Relevant Publications
Environmental Science & Technology Publication (2012)
Environmental Science & Technology Publication (2013)
Colorado - Coors Brewery, University Of Denver
Colorado - Coors Brewery, University Of Denver
FEAT Heavy-Duty Vehicle Measurements
Relevant Publications
Environmental Science & Technology Publication (2001)
Environmental Science & Technology Publication (2006)
Colorado - Dumont Weigh Station, University Of Denver
Colorado - Dumont Weigh Station, University Of Denver
FEAT Heavy-Duty Vehicle Measurements
Relevant Publications
Environmental Science & Technology Publication (2001)
Environmental Science & Technology Publication (2006)
Texas - Port Of Houston 2009, University Of Denver
Texas - Port Of Houston 2009, University Of Denver
FEAT Heavy-Duty Vehicle Measurements
Relevant Publications
California - Peralta Weigh Station, University Of Denver
California - Peralta Weigh Station, University Of Denver
FEAT Heavy-Duty Vehicle Measurements
Relevant Publications
Environmental Science & Technology Publication (2001)
Environmental Science & Technology Publication (2012)
Environmental Science & Technology Publication (2013)
Environmental Science & Technology Publication (2018)
Air & Waste Management Journal (2021)
California - Port Of Los Angeles, Unversity Of Denver
California - Port Of Los Angeles, Unversity Of Denver
On-road Heavy-duty Monitoring System Measurements
Relevant Publications
Environmental Science & Technology Publication (2015)
Environmental Science & Technology Publication (2017)
Environmental Science & Technology Publication (2018)
California - Cottonwood Weigh Station, University Of Denver
California - Cottonwood Weigh Station, University Of Denver
On-road Heavy-duty Monitoring System Measurements
Relevant Publications
Environmental Science & Technology Publication (2015)
Environmental Science & Technology Publication (2017)
Environmental Science & Technology Publication (2018)
Glyoxal’S Impact On Dry Ammonium Salts: Fast And Reversible Surface Aerosol Browning (Raw Data), David O. De Haan Phd, Lelia N. Hawkins Phd, Margaret A. Tolbert Phd, Jean-François Doussin
Glyoxal’S Impact On Dry Ammonium Salts: Fast And Reversible Surface Aerosol Browning (Raw Data), David O. De Haan Phd, Lelia N. Hawkins Phd, Margaret A. Tolbert Phd, Jean-François Doussin
Chemistry and Biochemistry: Faculty Scholarship
Alpha-dicarbonyl compounds are believed to form brown carbon in the atmosphere via reactions with ammonium sulfate (AS) in cloud droplets and aqueous aerosol particles. In this work, brown carbon formation in AS and other aerosol particles was quantified as a function of relative humidity (RH) during exposure to gas-phase glyoxal (GX) in chamber experiments. Under dry conditions (RH < 5%), solid AS, AS/glycine, and methylammonium sulfate aerosol particles brown within minutes upon exposure to GX, while sodium sulfate particles do not. When GX concentrations decline, browning goes away, demonstrating that this dry browning process is reversible. Declines in aerosol albedo are found to be a function of [GX]2, and are consistent between AS and AS/glycine aerosol. Dry methylammonium sulfate aerosol browns 4´ more than dry AS aerosol, but deliquesced AS aerosol browns much less than dry AS aerosol. Optical measurements at 405, 450, and 530 nm provide an estimated Ångstrom absorbance coefficient of -16 ±4. This coefficient and the empirical relationship between GX and albedo are used to estimate an upper limit to global radiative forcing by brown carbon formed by 70 ppt GX reacting with AS (+7.6 ´10-5 W/m2). This quantity is < 1% of the total radiative forcing by secondary brown carbon, but occurs almost entirely in the ultraviolet range.
The zipped data files are in the following formats: Igor experiments (.pxp), Word documents (.docx), Excel spreadsheets (.xlsx), organized by experiment number. “Optical” files contain cavity attenuated phase shift (CAPS) extinction, scattering and albedo data; PILS/waveguide data (experiments 1,2, and 5 only); …
A Public Health Perspective On Gen X Contamination In Drinking Water, Allison Stevens
A Public Health Perspective On Gen X Contamination In Drinking Water, Allison Stevens
Honors Capstone Enhancement Presentations
No abstract provided.