JOHANN P. ENGELBRECHT

Associate Research Professor
Atmospheric Sciences Division

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), University and Community College System of Nevada, has more than 12 years experience in air quality studies. He was the project leader and principal investigator for several large studies in the heavily industrialized regions of South Africa, including the "Pilot Study in Source Apportionment of Atmospheric Particulates in the Vaal Triangle", "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 20 years experience in the areas of X-ray fluorescence spectrometry (XRF), X-ray diffraction (XRD) and Electron Probe Micro-analysis (EPMA) of minerals and other materials. He also specializes in multivariate data analysis, including Principal Components Analysis (PCA) and Multiple Linear Regression Analysis. Dr. Engelbrecht is the author or co-author of 26 peer reviewed publications, of 35 reports, and has presented 23 papers at international conferences.

PROFESSIONAL EXPERIENCE:

2001, June - present Associate Research Professor, Division of Atmospheric Sciences, Desert Research Institute, University and Community College System of Nevada, Reno, NV

1989 - 2001 Principal Scientist to Specialist Scientist, Environmental & On-line Analysis, Mineralogy Division, Mintek, Johannesburg, South Africa

2000 - 2001 Associate Professor, Geology Department, Rand Afrikaans University, Johannesburg, South Africa

1985 - 1989 Senior Research Scientist, Geology Department, University of Potchefstroom for Christian Higher Education, South Africa

1975 - 1985 Senior Lecturer, Geology Department, University of Pretoria, South Africa

1973 - 1975 Lecturer, Geology Department, University of Port Elizabeth, South Africa

1972 Lecturer (temporary), Geology Department, University of Pretoria, South Africa

1967 - 1971 Lecturer, Department of Physical Sciences, Pretoria Technicon, South Africa

1966 Laboratory Assistant, Chemistry Department, University of Pretoria, South Africa

1964 Industrial Chemist, Consolidated Glass Works, Pretoria, South Africa

PROFESSIONAL AFFILIATIONS:

South African Council for Natural Scientific Professions (SACNASP)
Geological Society of South Africa (GSSA)
Mineralogical Association of South Africa (MINSA) (Chairman of the Executive Committee for 2000/1)
National Association for Clean Air (NACA).

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., 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, v.5, p. 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, v. 61 (1), p 1-15.

Engelbrecht, J.P., Swanepoel, L., Zunckel, M., Chow, J.C., Watson, J.G., and Egami, R.T, 2000.

Modelling PM10 aerosol data from the Qalabotjha low-smoke fuels macro-scale experiment in South Africa. Ecological Modelling, v. 127 (2-3), p. 235-244.

Engelbrecht, J.P. and Swanepoel, L., 1998,

Aerosol monitoring and source apportionment in Qalabotjha, Free State, South Africa, Mintek Report MC5, Randburg, South Africa.

Engelbrecht, J.P., Reddy, V.S., Swanepoel, L., and Mostert. J.C. 1998.

Aerosol monitoring and source apportionment in the Vaal Triangle. Mintek Special Publication No. 17.

Engelbrecht, J.P., Reddy, V.S., Swanepoel, L. and Mostert, J.C., 1996,

Airborne particulate matter monitoring and source apportionment in Olifantsfontein. Mintek Confidential Communication C2391M, Randburg, South Africa.

Engelbrecht, J.P., Reddy, V.S., Swanepoel, L. and Mostert, J.C., 1996,

Results of a source apportionment study at Valencia Park and Köhler Industries, in Nelspruit. Mintek Confidential Communication C2367M, Randburg, South Africa.

Engelbrecht, J.P., Reddy, V.S., Swanepoel, L., Mostert, J.C., Stuckenberg, B., de Beer, H. and Jones-Watson, E.A., 1994,

The establishment of chemical source profiles, and their Application to the Apportionment of Aerosols in the Vaal Triangle. Mintek Report MC2, Randburg, South Africa.

Engelbrecht, J.P., 1994, Reddy, V.S., Swanepoel, L., Mostert, J.C., Stuckenberg, B., and de Beer, H.,

The establishment of chemical source profiles from industrial and other emissions on the Eastern Transvaal Highveld. Mintek Report MC3, Randburg, South Africa.

Atmospheric Sciences Division
Desert Research Institute
2215 Raggio Parkway
Reno, NV 89512
(775)674-7398
Email: johann@dri.edu