My research interests focus primarily on airborne contaminants. I am interested in quantifying these contaminants, identifying their sources, investigating their chemical composition, and following the routes of human exposure. Included in my current projects is the exploration of the metal content of particulate matter related to vehicle exhaust. The metals of interest are vanadium, nickel, zinc, and the platinum groups metals used in catalytic converters. These metals, in their various oxidation states, are known to induce and/or exacerbate symptoms of respiratory disease. Through my involvement with the Johns Hopkins Particulate Matter Research Center I am exploring the relationship between exposure to ambient particulate matter and a range of health outcomes through a details analysis of ambient PM.

Environmental Health Sciences,airborne contaminants, health effects,source identification, chemical composition, metal content, particulate matter,ozone, World Trade Center, exposure assessment

Eftim S, Breysse PN, Geyh AS. “Canada Forest Fires, Transboundry Air Pollution and Hospitalizations among the Elderly in the Northeastern and Mid-Atlantic Regions of the USA in July 2004" in preparation

Omer, S, Barnet D, Chatterjee, P, Parker CI, Massa J, Ashwell L, Davis K, Schwab M, Geyh AS. "The World Trade Center Clean up and Recovery Worker Cohort Study: Mental health among clean up workers approximately 20 months after initial exposure at the disaster site" in preparation

Samet JM, Geyh AS, Utell M. "The Legacy of World Trade Center Dust" submitted to New England Journal of Medicine March 2007

Tao, X, Massa J, Ashwell L, Davis K, Schwab M, Geyh AS. "The World Trade Center Clean up and Recovery Worker Cohort Study: Respiratory health among clean up workers approximately 20 months after initial exposure at the disaster site" submitted December 2006.

Nachman KE, Mihalic JN, Burke TA, Geyh AS. “Determination and Comparison of Arsenic content in Pelletized Poultry House Waste and Biosolids Fertilizer” submitted November 2006

Decastro B.R., Buckley T.J., Wang L., Mihalic J.N., Breysse P.N., Geyh A.S. "The Longitudinal Dependence of Black Carbon Concentration on Traffic Volume in an Urban Environment" submitted November 2006

JM. Symons, Howell E, Ange B, Schwab M, Samet J, Geyh A. "Symptom Exacerbation and Hospitalization for Heart Failure: Onset, Progression, and Severity" submitted October 2006.

Schwab KJ, Gibson, KE, Williams DL, Kulbicki KM, Lo CP, Mihalic JN, Breysse PN, Curriero FC, Geyh AS. "Microbial and Chemical assessment of regions within New Orleans LA impacted by Hurricane Katrina” accepted for publication January 2007

Gross R, Neria Y, Tao XG, Massa J, Ashwell L, Davis K, Geyh A. “Post traumatic stress disorder and other psychological sequelae among World Trade Center Clean Up and Recovery Workers” 2006 Ann. N.Y. Acad.Sci. 1071 495-499.

Symons, JM, Wang L, Guallar E, Howell, E, Schwab M, Ange BA, Samet JM, Ondov, J, Harrison D, Geyh AS. “A Case-Crossover Study of Fine Particulate Matter Air Pollution and Congestive Heart Failure Hospitalization” Amer. J. Epi. 2006 Sep 1;164(5):421-433

Geyh AS, Chillrud S, Williams D, Herbstman JB, Symons JM, Rees K, Trupin,BJ, Lim, HJ, Kim, SR, Breysse PN "Assessing Truck Driver Exposure at the World Trade Center Disaster Site: Personal and Area Monitoring for Particulate Matter and Volatile Organic Compounds during October 2001 and April 2002" 2005 J. Occ. Environ. Hygiene 2 179-193.

Johnson SB, Langlieb A, Teret S, Gross R, Schwab M, Massa J, Geyh A "Rethinking First Response: Effects of the clean up and recovery effort on low-profile workers at the World Trade Center disaster site" J. Occ. Environ. Med.2005 Apr;47(4):386-391.

Herbstman JB, Frank R, Schwab M, Williams, D L, Samet JM,, Breysse PN, Geyh AS. "Respiratory Effects of Inhalation Exposure Among Workers During the Clean Up Effort at the World Trade Center Disaster Site" Environ. Res. 99 2005, 85-92.

Breysse PN, Williams DL, Herbstman JB, Symons JM, Chillrud SN, Ross J, Henshaw S, Rees K, Watson M, Geyh AS "Asbestos Exposures to Truck Drivers During World Trade Center Clean Up Operations" J.Occ.Environ.Hyg.2005 Aug;2(8):400-5.

Coordinating Authors: Landrigan PJ, Lioy PJ, Thurston G. Principal Contributing Authors: Berkowitz G, Chen LC, Chillrud SN, Gavett SH, Georgopoulos PG, Geyh AS, Levin S, Perera F, Rappaport SM, Small C. "Health and Environmental Consequences of the World Trade Center Disaster - The NIEHS World Trade Center Working Group". Environ Health Perspect 112:731-740, 2004.

Geyh, AS, Hering SV, Kreiberg N, Johns W. ,“Evaluation of a Personal and Microenvironmental Aerosol Speciation Sampler” Health Effects Institute Research Report 122, December 2004.

Beck C, Geyh AS, Srinivasan, A, Breysse PN, Eggleston PA: Buckley TJ. " The Effect of a Building Implosion on Air Quality in an Urban Baltimore Community" 2003 J. Air Waste Manag. 53:1256-1264.

O’Neil MSl, Ramirez-Aguilar M, Meneses-Gonzalez F, Geyh A, Sienra-Monge JJ, Hernandez-Avila M, Romieu I "Ozone exposure among Mexico City outdoor workers" 2003 J Air Waste Manag 53:339-346.

Srinivasan A, Beck C, Buckley T, Geyh A, Bova G, Porter C, Mertz W, Perl T. “The Ability of Hospital Ventilation Systems to Filter Aspergillus and Other Fungi Following a Building Implosion”2002 Infect Control Hosp Epi 23, 520-525.

Lee K, Xue J, Geyh AS, Ozkaynak H, Leaderer BP, Spengler JD, “ Nitrous Acid, Nitrogen Dioxide, and Ozone Concentrations in Residential Environments” 2002 Environ. Health Perspect. 110 2: 145-155.

Geyh AS, Xue J, Ozkaynak H, Spengler JD The Harvard Southern California Ozone Exposure Study: Assessing ozone exposure of grade-school age children in two southern California Communities" 2000. Environ Health Perspect :108 265-270.