Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Joan D. Willey"'
Autor:
Robert J. Kieber, Joan D. Willey, Ariel Potter, Barbara J. Turpin, Megumi S. Shimizu, Jason D. Surratt, Jennifer L. Harfmann, Ralph N. Mead, Rachael Mott, Jiaqi Zhou, G. Brooks Avery, Karsten Baumann, Stephen A. Skrabal
Publikováno v:
Environmental Science & Technology Letters. 8:366-372
Wet deposition and dry deposition of legacy per- and polyfluoroalkyl substances (PFAS) and perfluoroalkyl ether carboxylic acids (PFECAs) were assessed on the southeastern coast of the United States, specifically, in Wilmington, NC, which is located
Autor:
M. Lucia A.M. Campos, Rachel K. Thomas, Megumi S. Shimizu, J. David Felix, Ralph N. Mead, Chad S. Lane, G. Brooks Avery, Robert J. Kieber, Amanda Guy, Joan D. Willey, Matt Casas
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
Global atmospheric ethanol budget models include large uncertainties in the magnitude of ethanol emission sources and sinks. To apply stable isotope techniques to constrain ethanol emission sources, a headspace solid phase microextraction gas chromat
Publikováno v:
Atmospheric Environment. 168:55-61
Diurnal variations in gas phase and surface water concentrations of ethanol and acetaldehyde were investigated at five locations in southeastern North Carolina, USA. There were distinct diurnal oscillations observed in gas phase concentrations with m
Autor:
G. Brooks Avery, J. David Felix, Thomas Lathrope, Megumi S. Shimizu, Ralph N. Mead, John M. Cala, Robert J. Kieber, Joan D. Willey, Matthew S. Casas
Publikováno v:
Limnology and Oceanography: Methods. 15:1007-1014
The increased use of small molecular weight alcohols such as ethanol and potentially butanol isomers as biofuels has raised questions about the fate of these compounds in the environment once emitted. In order to address these questions, a method for
Autor:
Robert J. Kieber, J. David Felix, G. Brooks Avery, Katherine M. Mullaugh, Fernanda F. Giubbina, John M. Cala, Rachel K. Thomas, M. Lucia A.M. Campos, Ralph N. Mead, John R. Helms, Joan D. Willey
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
The global wet deposition flux of ethanol is estimated to be 2.4 ± 1.6 Tg/yr with a conservative range of 0.2–4.6 Tg/yr based upon analyses of 219 wet deposition samples collected at 12 locations globally. This estimate calculated by using observe
Autor:
G. Brooks Avery, Joan D. Willey, Ralph N. Mead, Robert J. Kieber, Megumi S. Shimizu, J. David Felix
Publikováno v:
npj Climate and Atmospheric Science, Vol 2, Iss 1, Pp 1-5 (2019)
Rainwater and gas phase ethanol concentrations increased approximately fourfold between 2010 and 2017 in Wilmington, NC, USA. This 8-year study demonstrates that the gas phase and rainwater concentrations of ethanol have risen due to increased produc
Publikováno v:
Environmental Processes. 3:711-722
In order to assess the use of Spanish moss (Tillandsia usneoides L.) as a biomonitor for atmospheric reactive nitrogen (Nr), T. usneoides samples were collected in urban Wilmington, NC, USA and at a remote barrier island 30 km away (Bald Head Island,
Autor:
Ralph N. Mead, Laura Foley, Katherine M. Mullaugh, G. Brooks Avery, Amanda Guy, J. David Felix, Angela L. Carroll, Robert J. Kieber, John R. Helms, Jesse Alan Roebuck, Stephen A. Skrabal, Joan D. Willey
Publikováno v:
Chemosphere. 144:360-365
This study reports the first ethanol concentrations in fresh and estuarine waters and greatly expands the current data set for coastal ocean waters. Concentrations for 153 individual measurements of 11 freshwater sites ranged from 5 to 598 nM. Concen
Autor:
Chad S. Lane, Ralph N. Mead, Joan D. Willey, J. David Felix, G. Brooks Avery, Joanne N. Halls, Megumi S. Shimizu, Robert J. Kieber, Sarah L. Summerlin
Publikováno v:
Atmospheric Environment. 234:117578
The recent rapid increase in ethanol use as a biofuel and emission to the atmosphere may impact air quality and oxidizing capacity in the atmosphere. However, the global models show large uncertainties on sources of atmospheric ethanol. Concentration
Autor:
Ralph N. Mead, Joanna M. Hamilton, Joan D. Willey, Katherine M. Mullaugh, G. Brooks Avery, Robert J. Kieber, J. David Felix
Publikováno v:
Chemosphere. 134:203-209
This study presents the first detailed concentration profile of trace VOCs in atmospheric waters. Analytes were detected and quantified in 111 unique rain events in Wilmington, NC, USA over a one-year period. Headspace solid phase microextraction was