Professor Dwight Smith

Dwight M. Smith

Department of Chemistry

University of Denver

Denver, CO 80208

Phone: 303-871-2938

FAX: 303-871-2254

Email: dwismith@du.edu

International Steering Committee for Black Carbon Reference Materials

Education

B. A. (Chemistry, magna cum laude), Central College, Pella, IA, 1953
Ph.D. (Chemistry), Pennsylvania State University, 1957

Professional Experience

Professor of Chemistry, University of Denver, 1972-present; on leave 1990-1992
President, Hawaii Loa College, 1990-1992
Chancellor, University of Denver, 1984-1989
Vice Chancellor for Academic Affairs, University of Denver, 1983-84
Professor and Chairman, Department of Chemistry, University of Denver, 1972-83
National Science Foundation Faculty Fellow, Scripps Institution of Oceanography; research with Professor E. D. Goldberg on elemental carbon in marine sediments, 1971-72
Associate Professor, Professor of Chemistry, Hope College, 1966-71
Sabbatical leave, Texaco Research Center (Beacon, New York); research on the spectroscopy of adsorbed molecules with Dr. R. P. Eischens, 1965-66
Assistant Professor, Department of Chemistry, Wesleyan University, 1961-66
Senior Chemist, Texaco Research Center; research on heterogeneous catalysis and theoretical aspects of high energy propellants, 1959-61
Postdoctoral Fellow, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1957-59

Teaching Interests

Analytical chemistry
Instrumental analysis
Advanced chemistry laboratory
Chemical equilibrium

Research Interests

Current research is related to the interaction of gas phase molecules with solid surfaces, and now is mostly focused on the nature and reactivity of black carbon (soot), produced through the combustion of fossil fuels. Previous work provided a characterization of the soot structure and surface which has been useful in studying its reactions, including their kinetics and mechanisms, with gaseous species of atmospheric interest. Recent research has emphasized the heterogeneous reactions of soot with oxides of nitrogen and sulfur, and ozone, studied through spectroscopic and microgravimetric techniques. Other questions being addressed by kinetics studies include catalysis, hydration mechanisms, the behavior of multiple reactants, and photochemical effects. Also under study is the role of the solid (soot) phase in these reactions, including unpaired electrons (by EPR), trace metals/mineral content, and particle size and morphology.

Recent Publications

A. R. Chughtai, W. F. Welch and D. M. Smith," A Spectroscopic Study of Gaseous Products of Soot-Oxides of Nitrogen-Water Reactions", Appl. Spectrosc., 44(2), 294-298 (1990).

A. R. Chughtai, W. F. Welch, and D. M. Smith, "A Spectroscopic and Gravimetric Study of the Soot-NO2/N2O4 Reaction At Various Temperatures", Carbon, 28(2/3), 411-421 (1990).

A. R. Chughtai, J. E. Peterson, J. A. Jassim, and D. M. Smith,"Spectroscopic and Solubility Characteristics of Oxidized Soots", Aerosol Sci. Technol., 15(2), 112-126(1991).

M. S. Akhter, A. R. Chughtai, and D. M. Smith,"Spectroscopic Studies of Oxidized Soots", Appl. Spectrosc., 45(4), 653- 665(1991).

A. R. Chughtai and D. M. Smith, " Long Optical Path Cell for Photochemical Kinetics in Heterogeneous Systems of Low Concentrations", Appl. Spectrosc., 45(7), 1204-1207(1991).

A. R. Chughtai, M. E. Brooks, and D. M. Smith, "The Effect of Metal Oxides and Black Carbon (Soot) on SO2/O2/H2O Reaction Systems", Aerosol Sci.& Technol., 19, 121-132 (1993).

A. R. Chughtai, S. A. Gordon, D. M. Smith, "Kinetics of the Hexane Soot Reaction with NO2/N2O4 at Low Concentration"; Carbon 1994, 32(3), 405-416.

D. M. Smith, A. R. Chughtai, " Spectroscopic Study of the Nature and Reactivity of Black Carbon", in Trends in Applied Spectroscopy, J. Menon, ed., Council of Scientific Information, Trivandrum, India, 1994. pp. 325-366.

D. M. Smith, A. R. Chughtai, "The Surface Structure and Reactivity of Black Carbon"; Colloids Surf. A 105 (1), 47-77 (1995).

A. R. Chughtai, M. E. Brooks, D. M. Smith, " The Hydration of Black Carbon"; J. Geophys. Res.-Atmos. 101 (D14), 19,505-19,514 (1996).

R. T. Lynch, A. R. Chughtai, D. M. Smith, "Upgrade of Older FTIR Systems"; Amer. Lab. 27 (16), 20N-20Q (1995).

D. M. Smith, A. R. Chughtai, " Reaction Kinetics of Ozone at Low Concentrations with n-hexane Soot"; J. Geophys. Res.-Atmos. 101 (D14) 19,607-19,620 (1996).

A. R. Chughtai, M. M. O. Atteya, B K. Konowalshuk, M. L. Rosenberger, D. M. Smith, "Interaction of SO_x and NO_x with Soot, " Symposia Preprints, Div. Fuel. Chem,. Am. Chem. Soc., 41 (1), 189-194 (1996).

D. M. Smith, M. M. O. Atteya, B. K. Konowalchuk, M. L. Rosenberger, A. R. Chughtai, "Absorbed Molecular Oxygen and the Surface Behavior of Soot," Symposia Preprints, Div. Fuel. Chem., Am. Chem. Soc., 41 (1), 133-137 (1996).

D. M. Smith, A. R. Chughtai, "Photochemical Effects in the Heterogeneous Reaction of Soot with Ozone at Low Concentrations", J. Atmos. Chem., 26 77-91 (1997).

A.R. Chughtai, M.M.O. Atteya, J. Kim, B.K. Konowalchuk, and D.M. Smith, “Adsorption and
adsorbate interaction at soot particle surfaces”, Carbon, 36(11), 1573-1589 (1998).

A.R. Chughtai, D.M. Smith, and M.S. Kumosa, “Chemical analysis of a field-failed composite suspension insulator”, J. Composite Sci. Technol., 58, 1641-1647 (1998).

S.A. Gordon, A.R. Chughtai, and D.M. Smith, “Revisiting iodometric estimation as a reference
method for ozone in laboratory gas streams”, Amer. Lab., 1998, in press.

A.R. Chughtai, G.R. Williams, M.M.O. Atteya, N.J. Miller, and D.M. Smith, “Carbonaceous
particle hydration”, Atmos. Environ., 1999, in press.

A.R. Chughtai, N.J. Miller, J.R. Pitts, and D.M. Smith, “Carbonaceous Particle Hydration III”,
J. Atmos. Chem., 1999, in press.

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