P. Barry Ryan, PhD, MS
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Research Program
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Phone Number
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Email Address
P. Barry Ryan, PhD, MS, holds joint appointments as a professor in the Department of Environmental Health at Rollins School of Public Health and in the Department of Chemistry at Emory University. He is a member of the Cancer Prevention and Control Research Program at Winship Cancer Institute.
Dr. Ryan has worked with the U.S. Environmental Protection Agency, serving on the Board of Scientific Counselors for the EPA's Office of Research and Development (2006-2010) and as an ad hoc member of the EPA's Science Advisory Panel (2004-2006) and Human Subjects Review Board (2007).
A graduate of the University of Massachusetts, Dr. Ryan received a master's degree from the University of Chicago and a PhD from Wesleyan University.
Dr. Ryan is a member of the International Society of Exposure Science.
Dr. Ryan's research focus includes environmental exposure assessment and the impact it has upon human health. Numerous environmental contaminants are known human carcinogens. His team studies exposures to such compounds and the likely health outcomes. He began his work over 30 years ago with an initial focus on air pollution exposures.
He is currently collaborating with Winship investigators to study exposure to volatile organic compounds and its relationship to Non-Hodgkin lymphoma.
Title/Journal | Authors | Publication Date |
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Chemosphere |
M Thompson, JA Eatman, AL Dunlop, DB Barr, K Kannan, EJ Corwin, PB Ryan, P Panuwet, V Yakimavets, KR Taibl, Y Tan, D Liang, SM Eick | 16/04/2024 |
The Science of the total environment |
KR Taibl, AL Dunlop, DB Barr, PB Ryan, P Panuwet, EJ Corwin, JA Eatman, Y Tan, D Liang, SM Eick | 15/03/2024 |
Environmental research |
JA Eatman, AL Dunlop, DB Barr, EJ Corwin, CC Hill, PA Brennan, PB Ryan, P Panuwet, KR Taibl, Y Tan, D Liang, SM Eick | 08/03/2024 |
Environmental science & technology |
D Liang, KR Taibl, AL Dunlop, DB Barr, PB Ryan, T Everson, A Huels, Y Tan, P Panuwet, K Kannan, C Marsit, DP Jones, SM Eick | 31/10/2023 |
Environmental research |
JA Eatman, AL Dunlop, DB Barr, EJ Corwin, CC Hill, PA Brennan, PB Ryan, P Panuwet, KR Taibl, Y Tan, D Liang, SM Eick | 15/09/2023 |
Environmental science & technology |
Y Tan, KR Taibl, AL Dunlop, DB Barr, P Panuwet, V Yakimavets, K Kannan, EJ Corwin, PB Ryan, JA Eatman, D Liang, SM Eick | 12/09/2023 |
Nature communications |
KR Taibl, AL Dunlop, DB Barr, YY Li, SM Eick, K Kannan, PB Ryan, M Schroder, B Rushing, T Fennell, CJ Chang, Y Tan, CJ Marsit, DP Jones, D Liang | 30/05/2023 |
Environmental pollution (Barking, Essex : 1987) |
KR Taibl, D Liang, AL Dunlop, DB Barr, MR Smith, K Steenland, Y Tan, PB Ryan, P Panuwet, T Everson, CJ Marsit, K Kannan, DP Jones, SM Eick | 15/04/2023 |
Journal of exposure science & environmental epidemiology |
SM Eick, Y Tan, KR Taibl, P Barry Ryan, DB Barr, A Hüls, JA Eatman, P Panuwet, PE D'Souza, V Yakimavets, GE Lee, PA Brennan, EJ Corwin, AL Dunlop, D Liang | 25/02/2023 |
Environmental research |
D Liang, J Batross, N Fiedler, T Prapamontol, P Suttiwan, P Panuwet, W Naksen, BO Baumert, V Yakimavets, Y Tan, P D'Souza, A Mangklabruks, S Sittiwang, K Kaewthit, K Kohsuwan, N Promkam, S Pingwong, PB Ryan, DB Barr | 01/12/2022 |
The Science of the total environment |
X Zhang, DB Barr, AL Dunlop, P Panuwet, JA Sarnat, GE Lee, Y Tan, EJ Corwin, DP Jones, PB Ryan, D Liang | 20/04/2022 |
JMIR research protocols |
BO Baumert, N Fiedler, T Prapamontol, P Suttiwan, W Naksen, P Panuwet, S Sittiwang, C Dokjunyam, MM Smarr, CJ Marsit, PB Ryan, W Siriwong, MG Robson, DB Barr | 07/02/2022 |
Environment international |
CJ Chang, DB Barr, PB Ryan, P Panuwet, MM Smarr, K Liu, K Kannan, V Yakimavets, Y Tan, V Ly, CJ Marsit, DP Jones, EJ Corwin, AL Dunlop, D Liang | 01/01/2022 |
Environmental pollution (Barking, Essex : 1987) |
Y Tan, DB Barr, PB Ryan, V Fedirko, JA Sarnat, AJ Gaskins, CJ Chang, Z Tang, CJ Marsit, EJ Corwin, DP Jones, AL Dunlop, D Liang | 01/01/2022 |
Review: Evolution of evidence on PFOA and health following the assessments of the C8 Science Panel. Environment international |
K Steenland, T Fletcher, CR Stein, SM Bartell, L Darrow, MJ Lopez-Espinosa, P Barry Ryan, DA Savitz | 01/12/2020 |
LC-MS Quantification of Malondialdehyde-Dansylhydrazine Derivatives in Urine and Serum Samples. Journal of analytical toxicology |
K Kartavenka, P Panuwet, V Yakimavets, C Jaikang, K Thipubon, PE D'Souza, DB Barr, PB Ryan | 02/04/2020 |
Environment international |
CJ Chang, ML Terrell, M Marcus, ME Marder, P Panuwet, PB Ryan, M Pearson, H Barton, DB Barr | 01/04/2020 |
Environmental health perspectives |
DB Barr, N Puttaswamy, LM Jaacks, K Steenland, S Rajkumar, S Gupton, PB Ryan, K Balakrishnan, JL Peel, W Checkley, T Clasen, ML Clark | 01/04/2020 |
International journal of environmental research and public health |
CM Hunter, DHZ Williamson, MO Gribble, H Bradshaw, M Pearson, E Saikawa, PB Ryan, M Kegler | 03/07/2019 |
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences |
K Kartavenka, P Panuwet, R Greenwald, KM Ehret, PE D'Souza, DB Barr, PB Ryan | 15/01/2019 |
Archives of environmental & occupational health |
P Panuwet, C Ladva, DB Barr, T Prapamontol, JD Meeker, PE D'Souza, H Maldonado, PB Ryan, MG Robson | 04/07/2018 |
Toxics |
SA Radford, P Panuwet, RE Hunter, DB Barr, PB Ryan | 02/02/2018 |
Journal of analytical toxicology |
ME Marder, P Panuwet, RE Hunter, PB Ryan, M Marcus, DB Barr | 01/09/2016 |
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences |
W Naksen, T Prapamontol, A Mangklabruks, S Chantara, P Thavornyutikarn, MG Robson, PB Ryan, DB Barr, P Panuwet | 01/07/2016 |
Production of Insecticide Degradates in Juices: Implications for Risk Assessment. Journal of agricultural and food chemistry |
SA Radford, P Panuwet, RE Hunter, DB Barr, PB Ryan | 08/06/2016 |
Cancer epidemiology |
JM Switchenko, C Bulka, K Ward, JL Koff, AR Bayakly, PB Ryan, LA Waller, CR Flowers | 01/04/2016 |
Critical reviews in analytical chemistry |
P Panuwet, RE Hunter, PE D'Souza, X Chen, SA Radford, JR Cohen, ME Marder, K Kartavenka, PB Ryan, DB Barr | 01/01/2016 |
Environmental research |
W Naksen, T Prapamontol, A Mangklabruks, S Chantara, P Thavornyutikarn, N Srinual, P Panuwet, PB Ryan, AM Riederer, DB Barr | 01/10/2015 |
Neurotoxicology |
N Fiedler, J Rohitrattana, W Siriwong, P Suttiwan, P Ohman Strickland, PB Ryan, DS Rohlman, P Panuwet, DB Barr, MG Robson | 01/05/2015 |
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences |
X Chen, P Panuwet, RE Hunter, AM Riederer, GC Bernoudy, DB Barr, PB Ryan | 01/11/2014 |
HPLC-MS/MS method for the measurement of insecticide degradates in baby food. Journal of agricultural and food chemistry |
SA Radford, P Panuwet, RE Hunter, DB Barr, PB Ryan | 23/07/2014 |
Biomarker-based calibration of retrospective exposure predictions of perfluorooctanoic acid. Environmental science & technology |
HM Shin, K Steenland, PB Ryan, VM Vieira, SM Bartell | 20/05/2014 |
International journal of hygiene and environmental health |
T Prapamontol, K Sutan, S Laoyang, S Hongsibsong, G Lee, Y Yano, RE Hunter, PB Ryan, DB Barr, P Panuwet | 01/01/2014 |
Journal of agromedicine |
J Rohitrattana, W Siriwong, T Tunsaringkarn, P Panuwet, PB Ryan, DB Barr, MG Robson, N Fiedler | 01/01/2014 |
Human exposures to PAHs: an eastern United States pilot study. Environmental monitoring and assessment |
R Williams, C Croghan, PB Ryan | 01/01/2013 |
Have regulatory efforts to reduce organophosphorus insecticide exposures been effective? Environmental health perspectives |
AL Clune, PB Ryan, DB Barr | 01/04/2012 |
Indoor air |
EL Murray, L Brondi, D Kleinbaum, JE McGowan, C Van Mels, WA Brooks, D Goswami, PB Ryan, M Klein, CB Bridges | 01/04/2012 |
Agricultural Pesticide Management in Thailand: Situation and Population Health Risk. Environmental science & policy |
P Panuwet, W Siriwong, T Prapamontol, PB Ryan, N Fiedler, MG Robson, DB Barr | 01/03/2012 |
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences |
P Panuwet, JV Nguyen, EL Wade, PE D'Souza, PB Ryan, DB Barr | 01/03/2012 |
Rainfall, household crowding, and acute respiratory infections in the tropics. Epidemiology and infection |
EL Murray, M Klein, L Brondi, JE McGowan, C van Mels, WA Brooks, D Kleinbaum, D Goswami, PB Ryan, CB Bridges | 01/01/2012 |
Environmental health perspectives |
HM Shin, VM Vieira, PB Ryan, K Steenland, SM Bartell | 01/12/2011 |
Environmental science & technology |
HM Shin, VM Vieira, PB Ryan, R Detwiler, B Sanders, K Steenland, SM Bartell | 15/02/2011 |
Current and historically used pesticides in residential soil from 11 homes in Atlanta, Georgia, USA. Archives of environmental contamination and toxicology |
AM Riederer, KD Smith, DB Barr, SW Hayden, RE Hunter, PB Ryan | 01/05/2010 |
Journal of agricultural and food chemistry |
RE Hunter, AM Riederer, PB Ryan | 10/02/2010 |
Environmental health perspectives |
SM Bartell, AM Calafat, C Lyu, K Kato, PB Ryan, K Steenland | 01/02/2010 |
Pyrethroid and organophosphorus pesticides in composite diet samples from Atlanta, USA adults. Environmental science & technology |
AM Riederer, RE Hunter, SW Hayden, PB Ryan | 01/01/2010 |
Reduced PM2.5 in Trujillo, Peru, on El Dia Sin Autos ("The Day Without Cars"). Journal of environmental health |
BE Cassidy, M Aguilar-Villalobos, PB Ryan, LP Naeher | 01/01/2010 |
Association of ambient ozone exposure with airway inflammation and allergy in adults with asthma. The Journal of asthma : official journal of the Association for the Care of Asthma |
SB Khatri, FC Holguin, PB Ryan, D Mannino, SC Erzurum, WG Teague | 01/10/2009 |
Predictors of personal air concentrations of chloroform among US adults in NHANES 1999-2000. Journal of exposure science & environmental epidemiology |
AM Riederer, SM Bartell, PB Ryan | 01/03/2009 |
Journal of exposure science & environmental epidemiology |
TE McKone, PB Ryan, H Ozkaynak | 01/01/2009 |
Diet and nondiet predictors of urinary 3-phenoxybenzoic acid in NHANES 1999-2002. Environmental health perspectives |
AM Riederer, SM Bartell, DB Barr, PB Ryan | 01/08/2008 |