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Philip Hopke

In this Section

Bayard D. Clarkson Distinguished Professor
Director of CARES

Chemical and Biomolecular Engineering

CA206 CAMP/Rowley Annex
Clarkson University
PO Box 5708
Potsdam, NY 13699-5708

Phone: 315-268-3861
Fax: 315-268-6654
E-mail: hopkepk@clarkson.edu
Personal Web site

Educational Background:
B.S., Chemistry, Trinity College, Hartford, CT, 1965
M.A., Chemistry, Princeton University, 1967
Ph.D., Chemistry, Princeton University, 1969

Research Interests:

  • Receptor Modeling
  • Ambient Monitoring
  • Nucleation

Honors and Awards:

  • 2004 David Sinclair Award of the American Association for Aerosol Research
  • 1991 Principal Investigator Award in Air Quality Research, Ministry of the Environment, Province of Ontario, Canada.
  • 1965 Subscription Award, Connecticut Valley Section, American Chemical Society.
  • Member of the Society of Sigma Xi
  • Member of Phi Kappa Phi

Memberships:

  • American Association for Aerosol Research; Vice President, 2002-2003; Vice President Elect, 2001-2002; and Member, Board of Directors, 1989-1994.
  • American Chemical Society and the Division of Nuclear Chemistry and Technology and the Division of Environmental Chemistry
  • American Institute of Chemical Engineers
  • American Physical Society and the Division of Nuclear Physics
  • Air & Waste Management Association and Committee EM-2 (Receptor/Source Apportionment); Secretary of Committee, 1983-1985; Chairman of Committee, 1989-1992.
  • American Association for the Advancement of Science
  • International Chemometrics Society
  • Gesellshaft fur Aerosolforschung
  • International Society of Exposure Assessment
  • International Society of Indoor Air Quality and Climate

Patents:
System for Determining Health Risk Due to Radon Progeny and Uses Thereof, Patent No. 5,204,528, April 20, 1993, G.S. Hurst, H.A. Wright and P.K. Hopke.

Selected Publications:
R.Sunder Raman and P.K. Hopke, “An Ion Chromatographic Analysis of Water-Soluble, Short-Chain Organic Acids in Ambient Particulate Matter,” Int. J. Environ. Anal. Chem. (In press, 2006).

C.-H. Jeong, G.J. Evans, P.K. Hopke, D. Chalupa, and M. Utell, “Influence of Atmospheric Dispersion and New Particle Formation Events on Ambient Particle Number Concentrations in Rochester, USA and Toronto, Canada,” J. Air Waste Manage. Assoc. (In press, 2006).

P. Zamankhan, G. Ahmadi, Z. Wang, P.K. Hopke, Y.-S. Cheng, W.C. Su, and P.A. Baron, “Airflow and Deposition of Nano-Particles in a Human Nasal Cavity,” Aerosol Sci. Technol. (In press, 2006).

V.Ye. Smorodin and P.K. Hopke, “Relationship of Heterogeneous Nucleation and Condensational Growth on Aerosol Nanoparticles,” Atmospheric Research (In press, 2006).

M.P. Anisimov, L. Anisimova, and P.K. Hopke, “Nucleation Rate Surface Construction for Water Vapor.” In: Nonequilibrium Processes. Plasma, Aerosols, and AtmosphericPhenomena. Volume 2. Eds by G.D. Roy, S. M. Frolov, and A.M. Sterik. Torus Press. Moscow. 260-266 (2005).

M.P. Anisimov and P.K. Hopke, “ Some General Requirements for Vapor Nucleation Rate Experiments.” In: Nonequilibrium Processes. Plasma, Aerosols, and Atmospheric Phenomena. Volume 2. Eds by G.D. Roy, S. M. Frolov, and A.M. Sterik. Torus Press. Moscow. 267-275 (2005).

L. Anisimova, M. Anisimov, G. Semin, P. Turner, and P.K. Hopke, “An Algorithm for Semi-Empirical Design of Nucleation Rate Surface,” J. Colloid Interface Sci. 290, 107–116 (2005).

W. Zhao, P.K. Hopke, X. Qin, and K.A. Prather, “Predicting Bulk Ambient Aerosol Compositions from ATOFMS Data with ART-2a and Multivariate Analysis,” Anal. Chim. Acta549, 179–187 (2005).

Z. Wang, P.K. Hopke , P.A. Baron, G. Ahmadi, Y-S Cheng, G. Deye, and W.-C. Su, “Fiber Classification and the Influence of Average Air Humidity,” Aerosol Sci. Technol. 39, 1056-1063 (2005).

M.P. Anisimov, L. Anisimova, P. Turner, and P. Hopke, “Nucleation Research Progress for Description of Atmospheric Aerosol Dynamics II.. Nucleation Rate Surface for Water Vapor,” Optics of Atmosphere and Ocean , 18(5-6): 380-386 (2005)

Sources of Fine Particles in a Rural Midwestern U.S. Area, E. Kim, P.K. Hopke, D.M. Kenski, M. Koerber, Environ. Sci. Technol. 39: 4953-4960 (2005).

Spatial Variability of Fine Particle Mass, Components, and Source Contributions During the Regional Air Pollution Study in St. Louis, E. Kim, P.K. Hopke, J.P. Pinto, W.E. Wilson, Environ. Sci. Technol. 39: 4172-4179 (2005).

Evaluation of the Potential Source Contribution Function using the 2002 Quebec Forest Fire Episode, B.A. Begum, E. Kim, C.-H. Jeong, D.-W. Lee, P.K. Hopke, Atmospheric Environ. 39: 3719-3724 (2005).

Estimation of Organic Carbon Blank Values and Error Structures of the Speciation Trends Network Data for Source Apportionment, E. Kim, P.K. Hopke, and Y. Qin, J. Air Waste Manage. Assoc. 55: 1190 - 1199 (2005).

Receptor Modeling for Multiple Time Resolved Species: The Baltimore Supersite, D. Ogulei, P.K. Hopke, L. Zhou, P. Paatero, S.S. Park, J.M. Ondov, Atmospheric Environ. 39: 3751-3762 (2005).

Measurement of Total PM2.5 Mass (Nonvolatile plus Semi-Volatile) with the FDMS TEOM Monitor, B.D. Grover, M. Kleinman, N.L. Eatough, D.J. Eatough, P.K. Hopke, R.W. Long, W.E. Wilson, M.B. Meyer, J.L. Ambs, J. Geophys. Res. 110: D07S03, doi:10.1029/2004JD004995, (2005).

Evaluation of Continuous and Filter-Based Methods for Measuring PM2.5 Mass Concentration, J.H. Lee, P.K. Hopke, T.M. Holsen, A.V. Polissar, Aerosol Sci. Technol. 39: 290-303 (2005).

Comparison between Back-Trajectory Based Modeling and Lagrangian Backward Dispersion Modeling For Locating Sources of Reactive Gaseous Mercury, Y.-J. Han, T.M. Holsen, P.K. Hopke, S.-M. Yi, Environ. Sci. Technol. 39: 1715-1723 (2005).

Measurements of Fine Particle Mass Concentrations Using Continuous and Integrated Monitors in Eastern U.S. Cities, J.H. Lee, P.K. Hopke, T.M. Holsen, A.V. Polissar, D.-W. Lee, E.S. Edgerton, J.M. Ondov, and G. Allen, Aerosol Sci. Technol. 39:261-275 (2005).

Source Identification of Fine Particles in Washington DC by Expanded Factor Analysis Modeling, B.A. Begum, P.K. Hopke, and W. Zhao, Environ. Sci. Technol. 55: 227–240 (2005).

Investigation of the Relationship Between Chemical Composition and Size Distribution of Airborne Particles by Partial Least Square (PLS) and Positive Matrix Factorization (PMF), L. Zhou, P.K. Hopke, C.O. Stanier, S.N. Pandis, J.M. Ondov, J.P. Pancras, J. Geophys. Res. 110: D07S18, doi:10.1029/2004JD005050 (2005).

Mining Airborne Particulate Size Distribution Data by Positive Matrix Factorization (PMF), L. Zhou, E. Kim, P.K. Hopke, C. Stanier, S.N. Pandis, J. Geophys. Res. 110: D07S19, doi:10.1029/2004JD004707 (2005).

Performance Evaluation of Continuous PM2.5 Mass Concentration Monitors, J.-H. Lee, P.K. Hopke, T.M. Holsen, D.-W. Lee, P.A Jaques, C. Sioutas, and J.L. Ambs, J. Aerosol Sci. 36: 95-109 (2005).

Measurement of Particle-Bound Reactive Oxygen Species in Rubidoux Aerosols, P. Venkatachari, P.K. Hopke, B.D. Grover, and D.J. Eatough, J. Atmospheric Chem. 50: 49-58 (2005).

Application of PLS and Back Propagation Neural Networks for the Estimation of Soil Properties, Z. Ramadan, P.K. Hopke, M. J. Johnson and K.M. Scow, Chemom. Intell. Lab. Syst. 75: 23-30 (2005).

Investigation of Sources of Atmospheric Aerosol at a Hot Spot Area in Dhaka, Bangladesh, B.A. Begum, S.K. Biswas, E. Kim, P.K. Hopke, and M. Khaliquzzaman, J. Air Waste Manage. Assoc. 55: 227-240 (2005).

A Graphical Diagnostic Method For Assessing the Rotation In Factor Analytical Models Of Atmospheric Pollution, P. Paatero, P.K. Hopke, B.A. Begum, S.K. Biswas, Atmospheric Environ. 39: 193-201 (2005).

Sources of Fine Particle Composition in New York City, Z. Li, P.K. Hopke, L. Husain, S. Qureshi, V.A. Dutkiewicz. J.J. Schwab, F. Drewnick, and K.L. Demerjian, Atmospheric Environ. 38: 6521–6529 (2004).

Measurement of Ultrafine Particle Size Distribution from Stationary Combustion Sources of Coal, Oil and Gas, M.-C. Oliver Chang, P.K. Hopke, J.C. Chow, J.G. Watson, S.-M. Yi, G.C. England, J. Air Waste Manage. Assoc. 54: 1494-1505 (2004).

Atmospheric Gaseous Mercury Concentrations in New York State: Relationships with Meteorological Data and Other Pollutants, Y.-J. Han, T.M. Holsen, S.-O. Lai, P.K. Hopke, S.-M. Yi, W. Liu, J. Pagano, L. Falanga, M. Milligan, and C. Andolina, Atmospheric Environ. 38: 6431-6446 (2004).

Comparison between Conditional Probability Function and Nonparametric Regression for Fine Particle Source Directions, E. Kim, and P.K. Hopke, Atmospheric Environ. 38: 4667–4673 (2004).

Advanced Factor Analysis for Multiple Time Resolution Aerosol Composition Data, L. Zhou, P.K. Hopke, P. Paatero, J.M. Ondov, J. Patrick Pancras, N.J. Pekney, C.I. Davidson, Atmospheric Environ. 38: 4909-4920 (2004).

Factor Analysis of Seattle Fine Particles, E. Kim, P.K. Hopke, T.V. Larson, N.N. Maykut, J. Lewtas, Aerosol Sci. Technol. 38: 724–738 (2004).

Condensation Activation and Nucleation on Heterogeneous Aerosol Nanoparticles, V.Y. Smorodin and P.K. Hopke, J. Phys. Chem. B 108: 9147-9157 (2004).

Total Potential Source Contribution Function Analysis of Trace Elements Found in Aerosol Samples Collected at the Burnt Island Great Lakes Sampling Locations, S. R. Biegalski and P.K. Hopke, Environ. Sci. Technol. 38: 4276-4284 (2004).

Source Apportionment for Ambient Particles in the San Gorgonio Wilderness, W. Zhao and P.K. Hopke, Atmospheric Environ. 38: 5901-5910 (2004).

The Comparison Between Thermal-Optical Transmittance Elemental Carbon and Aethalometer Black Carbon Measured at Multiple Monitoring Sites, C.H. Jeong, P.K. Hopke, E. Kim, and D.W. Lee, Atmospheric Environ. 38: 5193–5204 (2004).

Investigation Of Sources Of Atmospheric Aerosol At Urban And Semi-Urban Areas In Bangladesh, B.A. Begum, E. Kim, S.K. Biswas, P.K. Hopke, Atmospheric Environ. 38: 3025-3038 (2004).

Identification of Source Location for Atmospheric Dry Deposition of Heavy Metals during Yellow-Sand Events in Seoul, Korea in 1998 Using Hybrid Receptor Models, Y.-J. Han, T.M. Holsen, P.K. Hopke, J.-P. Cheong, H. Kim, S.-M. Yi, Atmospheric Environ. 38: 5353–5361 (2004).

Experimental Studies of Heterogeneous Nucleation in the Turbulent Mixing Condensation Nuclei Counter, R. Mavliev, P.K. Hopke, H-C Wang, D.-W. Lee, J. Phys. Chem. B 108: 4558-4564 (2004).

Improving Source Identification of Fine Particles in a Rural Northeastern U.S. Area utilizing Temperature Resolved Carbon Fractions, E. Kim and P.K. Hopke, J. Geophys. Res. 109: D09204 (2004).

Comparison of Two Trajectory Based Models for Locating Particle Sources for Two Rural New York Site, L. Zhou, W. Liu, and P.K. Hopke, Atmospheric Environ. 38: 1955-1963 (2004).

Source Apportionment of Fine Particles at Washington, DC utilizing Temperature Resolved Carbon Fractions, E. Kim and P.K. Hopke, J. Air Waste Manage. Assoc. 54: 773-785 (2004).

Improving Source Identification of Atlanta Aerosol using Temperature Resolved Carbon Fractions in Positive Matrix Factorization, E. Kim, P.K. Hopke, and E.S. Edgerton, Atmospheric Environ. 38: 3349-3362 (2004).

Characteristics of Nucleation and Growth Events of Ultrafine Particles Measured in Rochester, NY, C.-H. Jeong, P.K. Hopke, D. Chalupa, M. Utell, Environ. Sci. Technol. 38: 1933 - 1940 (2004).

Source Identification of Volatile Organic Compounds in Houston, TX, W. Zhao, P.K. Hopke, and T. Karl, Environ. Sci. Technol. 38: 1338-1347 (2004).

Measurement of Real-Time PM2.5 Mass, Sulfate, and Carbonaceous Aerosols at the Multiple Monitoring Sites, C.-H. Jeong, D.-W. Lee, E. Kim, P.K. Hopke, Atmospheric Environ. 38: 5247–5256 (2004).

On-Road Exposure to Highway Aerosols 2. Exposures of Aged, Compromised Rats, A.C.P. Elder, R. Gelein, J. Finkelstein, R. Phipps, M. Frampton, M. Utell, D.B. Kittelson, W.F. Watts, P.K. Hopke, C.-H. Jeong, E. Kim, W. Liu, W. Zhao, L. Zhou, R. Vincent, P. Kumarathasan, and G. Oberdörster, Inhalation Toxicology 16 (Suppl. 1): 41-53 (2004).

On-Road Exposure to Highway Aerosols 1. Aerosol and Gas Measurements, D. B. Kittelson, W. F. Watts, J. P. Johnson, M. L. Remerowki, E. E. Ische, G. Oberdörster, R. M. Gelein, A.C. Elder, P. K. Hopke, C.-H. Jeong, E. Kim, W. Liu, W. Zhao, and L. Zhou, Inhalation Toxicology 16 (Suppl. 1): 31-39 (2004).

Analysis of Particle Size Distributions using UNMIX and Positive Matrix Factorization, E. Kim, P.K. Hopke, T.V. Larson, and D.S. Covert, Environ. Sci. Technol. 38: 202-209 (2004).

Multilinear Model for Spatial Pattern Analysis of the Measurement of Haze and Visual Effects Project, W. Chueinta, P.K. Hopke, and P. Paatero, Environ. Sci. Technol. 38: 544-554 (2004).

Advanced Factor Analysis on Pittsburgh Particle Size Distribution Data, L. Zhou, E. Kim, P.K. Hopke, C. Stanier, and S. Pandis, Aerosol Sci. Technol. 38 (S1): 118-132 (2004).

Comparison of Experimental and Theoretical Heterogeneous Nucleation on Ultrafine Carbon Particles, D.-W. Lee, P.K. Hopke, D.H. Rasmussen, H.-C. Wang, R. Mavliev, J. Phys. Chem. B 107: 13813-13822 (2003).

Ambient Silver Concentration Anomaly in the Finnish Arctic Lower Atmosphere, M. S. Basunia, S. Landsberger, T. Yli-Tuomi, P. K. Hopke, P. Wishinski, J. Paatero and Y. Viisanen, Environ. Sci. Technol. 37: 5537-5544 (2003).

Incorporation of Parametric Factors into Multilinear Receptor Model Studies of Atlanta Aerosol, E. Kim, P.K. Hopke, P. Paatero, and E.S. Edgerton, Atmospheric Environ. 37: 5009-5021 (2003).

Application of Receptor Modeling to Atmospheric Constituents at Potsdam and Stockton, NY, W. Liu, P.K. Hopke,Y.-J. Han, S.-M. Yi, T.M. Holsen, S. Cybart, K. Kozlowski, and M. Milligan, Atmospheric Environ. 37: 4997-5007 (2003).

Origins of Fine Aerosol Mass in the Western United States Using Positive Matrix Factorization, W. Liu, P.K. Hopke, and R.A. Vancuren, J. Geophys. Res.- Atmospheres 108 (D23): Paper No. 4716, doi:10.1029/2003JD003678 (2003).

The Evolution of Chemometrics, P.K. Hopke, Anal. Chim. Acta 500: 365-377 (2003).

New Convergence Criterion for Multivariable Curve Resolution, F. Gan and P.K. Hopke, Anal. Chim. Acta 495: 195-203 (2003).

Atmospheric Aerosol over Finnish Arctic: Source Analysis by the Multilinear Engine and the Potential Source Contributions Function, T. Yli-Tuomi, P.K. Hopke, P. Paatero, M.S. Basunia, S. Landsberger, Y. Viisanen, and J. Paatero, Atmospheric Environ. 37: 4381-4392 (2003).

Spatial Prediction of Air Quality Data: A Primer, D.M. Holland, W.M. Cox, R. Scheffe, A.J. Cimorelli, D. Nychka, and P.K. Hopke, EM August, 31-35 (2003)

Data Mining of the Relationship Between Volatile Organic Components and Transient High-Ozone Formation, F. Gan and P.K. Hopke, Anal. Chim. Acta 490 153–158 (2003).

Receptor Modeling of Ambient and Personal Exposure Samples: 1998 Baltimore Particulate Matter Epidemiology-Exposure Study, P.K. Hopke, Z. Ramadan, P. Paatero, G. Norris, M. Landis, R. Williams, and C.W. Lewis, Atmospheric Environ. 37: 3289-3302 (2003).

Advanced Factor Analysis of Spatial Distributions of PM2.5 in the Eastern U.S., P. Paatero, P.K. Hopke, J. Hoppenstock, and S. Eberly, Environ. Sci. Technol. 37: 2460-2476 (2003).

Composition of the Finnish Arctic Aerosol: Collection and Analysis of Historic Filter Samples, T. Yli-Tuomi, L. Venditte, P.K. Hopke, M.S. Basunia, S. Landsberger, Y. Viisanen, and J. Paatero, Atmospheric Environ. 37:2355-2364 (2003).

Source Identification of PM2.5 in an Arid Northwest U.S. City by Positive Matrix Factorization, E. Kim, T.V. Larson, P.K. Hopke, C. Slaughter, L.E. Sheppard, C. Claiborne, Atmospheric Res. 66: 291–305 (2003).

Source Identification of Atlanta Aerosol by Positive Matrix Factorization, E. Kim, P.K. Hopke, and E. Edgerton, J. Air Waste Mange. Assoc. 53:731-739 (2003).

Recent Developments in Receptor Modeling, P.K. Hopke, J. Chemometrics 17: 255-265 (2003).

Comparison of Hybrid Receptor Models to Locate PCB Sources in Chicago, Y.-K. Hsu, T. M. Holsen and P.K. Hopke, Atmospheric Environ. 37: 545–562 (2003).

Locating and Quantifying PCB Sources in Chicago: Receptor Modeling and Field Sampling, Y.-K. Hsu, T. M. Holsen and P.K. Hopke, Environ. Sci. Technol. 37: 681-690 (2003).

Discarding or Downweighing High-Noise Variables in Factor Analysis Models, P. Paatero and P.K. Hopke, Anal. Chim. Acta 490: 277-289 (2003).

Comparison of Positive Matrix Factorization (PMF) and Multilinear Engine (ME-2) for the Source Apportionment of Particulate Pollutants, Z. Ramadan, B. Eickhout, X.-H. Song, L. M. C. Buydens, and P.K. Hopke, Chemom. Intell. Lab. Syst. 66:15-28 (2003).

Application of Modified Alternating Least Squares Regression to Spectroscopic Image Analysis, J.-H. Wang, P.K. Hopke, T.M. Hancewicz, and S.L. Zhang, Analytica Chim. Acta 476: 93-109 (2003).

Sample-Specific Standard Error of Prediction for Partial Least Squares Regression, N.M. Faber, X.-H. Song and P.K. Hopke, Trends Anal. Chem. 22(5):330-334 (2003).

General Recommendations For Vapor Nucleation Rate Experiments, M.P. Anisimov, P.K. Hopke, and Z.N. Esina, Aerosol Sci. Technol. 37:183-186 (2003).

Recent developments in CANDECOMP/ PARAFAC algorithms: A critical review, N.M. Faber, R. Bro, and P. K. Hopke, Chemom. Intell. Lab. Syst. 65:119-137 (2003).

Measured Summertime Concentrations of Particulate Components, Hg0, and Speciated Polycyclic Aromatic Hydrocarbons at Rural Sites in New York State, P.K. Hopke, W. Liu, Y.-J. Han, S.M. Yi, T.M. Holsen, S. Cybart, K. Kozlowski, and M. Milligan, Environ. Pollution 123:413-425 (2003).

Identification of Sources Contributing to the Mid-Atlantic Regional Aerosol, J.H. Lee, Y. Yoshida, B.J. Turpin, P.K. Hopke, and R.L. Poirot, J. Air Waste Manage. 52:1186-1205 (2002).

Understanding and Controlling Rotations in Factor Analytic Models, P. Paatero, P.K. Hopke, X.H. Song, Z. Ramadan, Chemom. Intell. Lab. Syst. 60: 253-264 (2002).

Utilizing Wind Direction and Wind Speed as Independent Variables in Multilinear Receptor Modeling Studies, P. Paatero and P.K. Hopke, Chemom. Intell. Lab. Syst. 60: 25-41 (2002).

Comparative Application of Multiple Receptor Methods to Identify Aerosol Sources in Northern Vermont, R.L. Poirot, P.R. Wishinski, P.K. Hopke and A.V. Polissar, Environ. Sci. Technol. 35: 4622-4636 (2001).

Atmospheric Aerosol over Vermont: Chemical Composition and Sources, A.V. Polissar, P.K. Hopke, and R.L. Poirot, Environ. Sci. Technol. 35: 4604-4621 (2001).

Source Regions for Atmospheric Aerosol Measured at Barrow, Alaska, A.V. Polissar, P.K. Hopke, J.M. Harris, Environ. Sci. Technol. 35: 4214-4226 (2001).

Enhanced Airborne Polychlorinated Biphenyl (PCB) Concentrations and Chlorination Downwind of Lake Ontario, J. Chiarenzelli, J. Pagano , R. Scrudato , L. Falanga , K. Migdal , A. Hartwell, M. Milligan, T. Battalagia, T. M. Holsen, Y. Hsu, P.K. Hopke, Environ. Sci. Technol. 35: 3280-3286 (2001).

Nucleation Rate Surface Topologies for Binary Systems, M.P. Anisimov and P.K. Hopke, J. Phys. Chem. B; 105:11817-11822 (2001).

Sources of Fine Particle Composition in the Northeastern US, X.H. Song, A.V. Polissar, and P.K. Hopke, Atmospheric Environ. 35:5277-5286 (2001).

The Quantification of ATOFMS Data by Multivariate Methods, D.P. Ferguson, X.-H. Song, Z. Ramadan, J.O. Allen, L.S. Hughes, G.R. Cass, P.K. Hopke and K.A. Prather, Anal. Chem. 73: 3535-3541 (2001).

Binary N-Octanol - Sulfur Hexafluoride Nucleation, M P. Anisimov, P. K. Hopke, I.N. Shaimordanov, S. D. Shandakov, and L.-E. Magnusson, J. Chem. Phys. 115: 810-816 (2001).

Variable Selection in Classification of Environmental Soil Samples for PLS and Neural Network Models, Z. Ramadan, X.H. Song, P.K. Hopke, M. Johnson and K. Scow, Anal. Chim. Acta 446: 233-244 (2001).

Two Channel Vapor Nucleation in the Vicinity of the Triple Point, L. Anisimova, P.K. Hopke, and J. Terry, J. Chem. Phys. 114:9852-9855 (2001).

Source Apportionment of Gasoline and Diesel by Multivariate Calibration Based on Single Particle Mass Spectral Data, X.-H. Song, N.M. Faber, P.K. Hopke, D.T. Suess, K.A. Prather, J. Schauer, and G.R. Cass, Anal. Chim. Acta 446: 329-343 (2001).

Identification of Sources of Pollutants in Precipitation Measured at the Mid-Atlantic US Coast, D. Lucey, L. Hadjiiski, P.K. Hopke, J. Scudlark, and T. Church, Atmospheric Environ. 35:3979-3986 (2001).

Equation-Oriented System (EOS): An Efficient Programming Approach to Solve Multilinear and Polynomial Equations by the Conjugate Gradient Algorithm, J.-H. Wang and P.K. Hopke, Chemom. Intell. Lab. Syst. 55: 13-22 (2001).

Beta Gauge for Aerosol Mass Measurement, W. Chueinta, and P. K. Hopke, Aerosol Sci. Technol. 35: 840-843 (2001).

Multiple Imputation for Multivariate Data with Missing and Below-Threshold Measurements: Time-Series Concentrations of Pollutants in the Arctic, P.K. Hopke, C. Liu, and D.B. Rubin, Biometrics 57: 22-33 (2001).

A Transition from Heterogeneous to Homogeneous Nucleation in the Turbulent Mixing CNC, R. Mavliev, P.K. Hopke, H.-C. Wang, and D.-W. Lee, Aerosol Sci. Technol. 35: 586-595 (2001).

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