JOHANN P. ENGELBRECHT

Associate Research Professor
Division of Atmospheric Sciences

Resume

EDUCATION:

Ph.D. Geology 1987 University of Pretoria, South Africa
M.Sc. Geology 1973 University of Pretoria, South Africa
B.Sc. (Hons) Geology 1970 University of Pretoria, South Africa
B.Sc. Chemistry, Physics 1963 University of Pretoria, South Africa

PROFESSIONAL INTERESTS:

            Dr. Johann Engelbrecht, Associate Research Professor in the Division of Atmospheric Sciences at the Desert Research Institute (DRI), has more than 17 years experience in air quality studies.  He was the project leader and principal investigator for several large studies in the industrialized regions of South Africa, including the “The Establishment of Chemical Source Profiles, and their Application to the Apportionment of Aerosols in the Vaal Triangle,” “The Establishment of Chemical Source Profiles from the Industrial and other Emissions on the Eastern Transvaal Highveld,” “Aerosol Monitoring and Source Apportionment in the Vaal Triangle” and “Aerosol Monitoring and Source Apportionment in Qalabotjha, Free State, South Africa.”  Dr. Engelbrecht pioneered the implementation of PM10 and PM2.5 monitoring as well as the CMB receptor modeling in South Africa.  He was responsible for setting up a national facility at Mintek (Council for Minerals Technology), Johannesburg, for the analysis of aerosol filters.  He has more than 30 years experience in the areas of X-ray fluorescence spectrometry (XRF), X-ray diffraction (XRD) and Electron Probe Micro-analysis (EPMA) of minerals in dusts and other materials. He also specializes in multivariate data analysis, including Principal Components Analysis (PCA), Positive Matrix Factorization (PMF), Chemical Mass Balance (CMB), and Multiple Linear Regression Analysis. 

            Since joining the Desert Research Institute in 2001 Dr. Engelbrecht has been principal or co-principal investigator on a variety of air quality studies, including theDOE’s EMSI, Yucca Mountain Air Quality Scoping Study,  DOD’s Middle East, Advanced Particulate Matter Surveillance Program, Lake Tahoe Source Attribution Study, the EPA/VISTAS Characterization of Fine Particulate Mass Using Particle-phase Organic Compounds as Tracers, and the EPA/Marama Air Quality Monitoring Data and Receptor Modeling Analysis.  Dr. Engelbrecht is the author or co-author of more than 35 peer reviewed publications,  more than 40 reports, and has made 52 presentations at international conferences and workshops.

PROFESSIONAL AFFILIATIONS:

South African Council for Natural Scientific Professions (SACNASP)
Air & Waste Management Association (A&WMA)
Mineralogical Association of South Africa (MINSA) (Chairman of the Executive Committee for 2000/1)
National Association for Clean Air (NACA), South Africa.

AWARDS:

MINTEK, Achievement Award, Gold Medal. The Measurement and Apportionment of Airborne Particulate Matter. November 1995
MINTEK, Gold Kruger Rand. Air Pollution Research. December 1993

SELECTED PUBLICATIONS:

Engelbrecht, J.P., McDonald E.V., Gillies, J.A., Jayanty, R.K.M.., Casuccio, and Gertler, A.W. (2008).

Characterizing mineral dusts and other aerosols from the Middle East – Part I: Ambient aerosols. Inhalation Toxicology, (in press).

Engelbrecht, J.P., McDonald E.V., Gillies, J.A., Jayanty, R.K.M.., Casuccio, and Gertler A.W. (2008).

Characterizing mineral dusts and other aerosols from the Middle East – Part II: Grab samples and re-suspensions. Inhalation Toxicology, (in press).

Banta, J.R., McConnell, J.R., Edwards, R., and Engelbrecht, J.P. (2008).

Delineation of carbonate dust, aluminous dust, and sea salt deposition in a Greenland gaciochemical array using Positive Matrix Factorization. Geochem. Geophys. Geosyst. 9, Q07013, doi:10.1029/2007GC001908.

Gillies, J.A., H. Kuhns, J.P. Engelbrecht, S. Uppapalli, V. Etyemezian, and G. Nikolich (2007).

Particulate emissions from U.S. Department of Defense artillery backblast testing.  J. Air & Waste Manage. Assoc. 57, 551-560.

Chow, J.C., J.G. Watson, H. Kuhns, V. Etyemezian, D.H. Lowenthal, D. Crow, S.D. Kohl, J.P. Engelbrecht, and M.C. Green, 2004:

Source Profiles for Industrial, Mobile, and Area Sources in the Big Bend Regional Aerosol Visibility and Observational (BRAVO) Study. Chemosphere, 54(2), 185-208.

Labban, R., J.M. Veranth, J.C. Chow, J. Engelbrecht, and J.G. Watson, 2004:

Size and Geographical Variation in PM1, PM2.5, and PM10: Source Profiles from Soils in the Western United States. Water, Air, and Soil Pollution, 157(1-4), 13-31.

Watson, J.G., Zhu, T., Chow, J.C., Engelbrecht, J.P., Fujita, E.M. and Wilson, W.E. (2002).

Receptor modeling application framework for particle source apportionment. Chemosphere, 49 (9), 1093-1136.

Chow, J.C., Engelbrecht, J.P., Freeman, N.C.G., Hashim, J.H., Jantunen, M, Michaud, J.-P. Saenz de Tajeda, S., Watson J.G., Wei, F., Wilson W.E., Yasuno, M., and Zhu, T.(2002).

Exposure measurements. Chemosphere, 49 (9), 873-901.

Chow, J.C., Engelbrecht, J.P., Watson, J.G., Wilson, W.E., Frank, N.H., and Zhu, T. (2002).

Designing monitoring networks to represent outdoor human exposure. Chemosphere, 49 (9), 961-978.

Wilson, W.E., Chow, J.C., Claiborn, C., Fusheng, W., Engelbrecht, J.P., and Watson, J.G. (2002).

Monitoring of particulate matter outdoors.  Chemosphere, 49 (9), 1009-1043.

Engelbrecht, J.P., Swanepoel, L., Chow, J.C., Watson, J.G., and Egami, R.T. (2002).

The comparison of source contributions from residential coal and low-smoke fuels, using CMB modeling, in South Africa. Environ. Science and Policy, 5 (2), 157-167.

Engelbrecht, J.P., Swanepoel, L., Chow, J.C., Watson, J.G., and Egami, R.T., 2001.

PM2.5 and PM10 concentrations from the Qalabotjha low-smoke fuels macro-scale experiment in South Africa. Environmental Monitoring and Assessment, 61, 1-15.

Atmospheric Sciences Division
Desert Research Institute
2215 Raggio Parkway
Reno, NV 89512
(775) 674-7027
Email: johann@dri.edu