Kenneth G. Sexton

 

Research Assistant Professor (Retired-Active)
Environmental Sciences and Engineering

Research Group Website
REACH NC (Collexis) Research Profile

007A Rosenau Hall
135 Dauer Drive
Campus Box 7431
Chapel Hill, NC, USA 27599-7431
T: 919-966-5451
F: 919-966-7911
ken_sexton@unc.edu

 

Education
1974 West Virginia University, Morgantown BS, Chemistry      
1979 University of North Carolina, Chapel Hill MSPH, Atmospheric Chemistry
1984 University of North Carolina, Chapel Hill PhD, Atmospheric Chemistry

 

Teaching
ENVR 514 Measurement of NOx, O3, and Volatile Organic Compounds

 

Research interests

  • Atmospheric Chemistry and Air Pollution

  • Toxicological methods for risk assessment of air pollution

  • Development of air quality models for risk assessment

 

Research activities

My research focuses on the atmospheric chemistry of urban systems of nitrogen oxides and hydrocarbons, on understanding the reactive chemistry producing ozone and other photochemical products, using smog chambers.  Research includes producing data suitable for modeling and simulating the experiments for the purposes of evaluating chemical mechanisms for use in air quality simulation models for ozone. This effort evolves to studies of chemical systems including organic compounds designated as air toxics or hazardous air pollutants including nanoparticles. In the last twelve years, I have focused on developing and demonstrating new technological systems to interface smog chambers and in vitro toxicological exposure systems for evaluating the effects of photochemistry on urban air mixtures and the resulting toxic potential for health effects.  These new toxicological systems included developing new in vitro exposure apparatus for particulate matter, and a new laboratory and outdoor chamber suitable for aerosol research, including both toxicology and analytical capabilities.

 
Key publications
 

Cohen, R.; Sexton, K. G.; Yeatts, K. B., Hazard assessment of United Arab Emirates (UAE) incense smoke. Sci Total Environ 2013, 458-460C, 176-186.

Lichtveld, K. M.; Ebersviller, S. M.; Sexton, K. G.; Vizuete, W.; Jaspers, I.; Jeffries, H. E., In vitro exposures in diesel exhaust atmospheres: resuspension of PM from filters versus direct deposition of PM from air. Environmental science & technology 2012, 46, (16), 9062-70.

Ebersviller, S.; Lichtveld, K.; Sexton, K. G.; Zavala, J.; Lin, Y. H.; Jaspers, I.; Jeffries, H. E., Gaseous VOCs rapidly modify particulate matter and its biological effects – Part 2: Complex urban VOCs and model PM. Atmospheric chemistry and physics discussions : ACPD 2012, 12, 12293–12312.

Ebersviller, S.; Lichtveld, K.; Sexton, K. G.; Zavala, J.; Lin, Y. H.; Jaspers, I.; Jeffries, H. E., Gaseous VOCs rapidly modify particulate matter and its biological effects – Part 1: Simple VOCs and model PM. Atmospheric chemistry and physics discussions : ACPD 2012, 12, (2), 5065-5105.

de Bruijne, K.; Ebersviller, S.; Sexton, K. G.; Lake, S.; Leith, D.; Goodman, R.; Jetters, J.; Walters, G. W.; Doyle-Eisele, M.; Woodside, R.; Jeffries, H. E.; Jaspers, I., Design and testing of Electrostatic Aerosol in Vitro Exposure System (EAVES): an alternative exposure system for particles. Inhal Toxicol 2009, 21, (2), 91-101.

Sexton, K. G.; Doyle, M. L.; Jeffries, H. E.; Ebersviller, S., Development and testing of a chemical mechanism for atmospheric photochemical transformations of 1,3-butadiene. Chemico-biological interactions 2007, 166, (1-3), 156-62.

Sexton, K. G.; Jeffries, H. E.; Jang, M.; Kamens, R. M.; Doyle, M.; Voicu, I.; Jaspers, I., Photochemical products in urban mixtures enhance inflammatory responses in lung cells. Inhal Toxicol 2004, 16 Suppl 1, 107-14.