Nga Lee "Sally" Ng

Postdoctoral Researcher, Chemical Engineering, Caltech

Keck Engineering Labs, Roof Lab
email: ng [AT] caltech
(626) 395-4476

Ph.D., Chemical Engineerinig, California Institute of Technology
B.S., Chemical and Environmental Engineering, Hong Kong University of Science and Technology, 2002

Awards and Honors

• 3rd place Winner, Ultrafine Particle Graduate Student Research Competition, 2006 South Coast Air Quality Management District Ultrafine Particle Conference.
  Awarded project: “Contribution of first- versus second-generation products to secondary organic aerosols formed in the oxidation of biogenic hydrocarbons.”

Research Interests

Chamber studies of formation of secondary organic aerosols

Publications

21. Ng, N. L., Chhabra, P. S., Chan, A. W. H., Surratt, J. D., Kroll, J. H., Kwan, A. J., McCabe, D. C., Wennberg, P. O., Sorooshian, A., Murphy, S. M., Dalleska, N. F., Flagan, R. C. and Seinfeld, J. H. (2007); Effect of NOx level on secondary organic aerosol (SOA) formation from the photooxidation of terpenes, Atmos. Chem. Phys., 7, 5159-5174.

20. Chan, A. W. H., Kroll, J. H., Ng, N. L. and Seinfeld, J. H. (2007); Kinetic modeling of secondary organic aerosol formation: effects of particle- and gas-phase reactions of semivolatile products, Atmos. Chem. Phys. Discuss., 7, 7051-7085, 2007.

19. Ng, N. L., Kroll, J. H., Chan, A. W. H., Chhabra, P. S., Flagan, R. C. and Seinfeld, J. H. (2007); Secondary organic aerosol formation from m-xylene, toluene, and benzene, Atmos. Chem. Phys., 7, 3909-3922.

18. Sorooshian, A., Ng, N. L., Chan, A. W. H., Feinglod, G., Flagan, R. C. and Seinfeld, J. H. (2007); Particulate organic acids and overall water-soluble aerosol composition measurements from the 2006 Gulf of Mexico Atmospheric Composition and Climate Study (GoMACCS), J. Geophys. Res., 112, D13201, doi:10.1029/2007JD008537.

17. Kroll, J. H., Chan, A. W. H., Ng, N. L., Flagan, R. C. and Seinfeld, J. H. (2007); Reactions of semivolatile organics and their effects on secondary organic aerosol formation, Environ. Sci. Technol., 41, 3545-3550.

16. Murphy, S. M., Sorooshian, A., Kroll, J. H., Ng, N. L., Chhabra, P. S., Tong, C., Surratt, J. D., Knipping, E., Flagan, R. C. and Seinfeld, J. H. (2007);Secondary aerosol formation from atmospheric reactions of aliphatic amines, Atmos. Chem. Phys. Discuss., 7, 289-349.

15. Szmigielski, R., Surratt, J. D., Vermeylen, R., Szmigielska, K., Kroll, J. H., Ng, N. L., Murphy, S. M., Sorooshian, A., Seinfeld, J. H., Claeys, M. (2007); Characterization of 2-methylglyceric acid oligomers in secondary organic aerosol formed from the photooxidation of isoprene using trimethylsilylation and gas chromatography/ion trap mass spectrometry, J. Mass Spectrom., 42, 101-116.

14. Surratt, J. D., Kroll, J. H., Kleindienst, T. E., Edney, E. O., Claeys, M., Sorooshian, A., Ng, N. L., Offenberg, J. H., Lewandowski, M., Jaoui, M., Flagan, R. C. and Seinfeld, J. H. (2007); Evidence for organosulfates in secondary organic aerosol, Environ. Sci. Technol., 41, 517-527.

13. Lee, A., Goldstein, A. H., Kroll, J. H., Ng, N. L., Varutbangkul, V., Flagan, R. C. and Seinfeld, J. H. (2006); Gas-phase products and secondary aerosol yields from the photooxidation of 16 different terpenes, J. Geophys. Res., 111, D17305, doi:10.1029/2006JD007050.

12. Surratt, J. D., Murphy, S. M., Kroll, J. H., Ng, N. L., Hildebrandt, L., Sorooshian, A., Szmigielski, R., Vermeylen, R., Maenhaut, W., Claeys, M., Flagan, R. C. and Seinfeld, J. H. (2006); Chemical composition of secondary organic aerosol formed from the photooxidation of isoprene, J. Atmos. Chem., 31, 9665-9690.

11. Varutbangkul, V., Brechtel, F. J., Bahreini, R., Ng, N. L., Keywood, M. D., Kroll, J.H., Flagan, R. C., Seinfeld, J. H., Lee, A. and Goldstein, A. H. (2006); Hygroscopicity of secondary organic aerosols formed by oxidation of cycloalkenes, monoterpenes, sesquiterpenes, and related compounds, Atmos. Chem. Phys., 6, 2367-2388.

10. Lee, A., Goldstein, A. H., Keywood, M. D., Gao, S., Varutbangkul, V., Bahreini, R., Ng, N. L., Flagan, R. C. and Seinfeld, J. H. (2006); Gas-phase products and secondary aerosol yields from the ozonolysis of ten different terpenes, J. Geophys. Res., 111, D07302, doi:10.1029/2005JD006437.

9. Ng, N. L., Kroll, J. H., Keywood, M. D., Bahreini, R., Varutbangkul, V., Flagan, R. C., Seinfeld, J. H., Lee, A. and Goldstein, A. H. (2006); Contribution of first- versus second-generation products to secondary organic aerosols formed in the oxidation of biogenic hydrocarbons, Environ. Sci. Technol., 40, 2283-2297.

8. Kroll, J. H., Ng, N. L., Murphy, S. M., Flagan, R. C. and Seinfeld, J. H. (2006); Secondary organic aerosol formation from isoprene photooxidation, Environ. Sci. Technol., 40, 1869-1877.

7. Kroll, J. H., Ng, N. L., Murphy, S. M., Varutbangkul, V., Flagan, R. C. and Seinfeld, J. H. (2005); Chamber studies of secondary organic aerosol growth by reactive uptake of simple carbonyl compounds, J. Geophys. Res., 110, D23207, doi:10.1029/2005JD006004.

6. Kroll, J. H., Ng, N. L., Murphy, S. M., Flagan, R. C. and Seinfeld, J. H. (2005); Secondary organic aerosol formation from isoprene photooxidation under high-NOx conditions, Geophys. Res. Lett., 32, L18808, doi:10.1029/2005GL023637.

5. Bahreini, R., Keywood, M. D., Ng, N. L., Varutbangkul, V., Gao, S., Flagan, R. C., Seinfeld, J. H., Worsnop, D. R. and Jimenez, J. L. (2005); Measurements of secondary organic aerosol (SOA) from oxidation of cycloalkenes, terpenes, and m-xylene using an Aerodyne aerosol mass spectrometer, Environ. Sci. Technol., 39, 5674-5688.

4. VanReken, T. M., Ng, N. L., Flagan, R. C. and Seinfeld, J. H.  (2005); Cloud condensation nucleus activation properties of biogenic secondary organic aerosol, J. Geophys. Res., 110, D07206, doi:10.1029/2004JD005465.

3. Chan, M. N., Choi, M. Y., Ng, N. L. and Chan, C. K. (2005); Hygroscopicity of water-soluble organic compounds in atmospheric aerosols: Amino acids and biomass burning derived organic species, Environ. Sci. Technol., 39, 1555-1562.

2. Gao, S., Ng, N. L., Keywood, M. D., Varutbangkul, V., Bahreini, R., Nenes, A., He, J. W., Yoo, K. Y., Beauchamp, J. L., Hodyss, R. P., Flagan, R. C. and Seinfeld, J. H.  (2004); Particle phase acidity and oligomer formation in secondary organic aerosol, Environ. Sci. Technol., 38, 6582-6589.

1. Gao, S., Keywood, M. D., Ng, N. L., Surratt, J. D., Varutbangkul, V., Bahreini, R., Flagan, R. C. and Seinfeld, J. H. (2004);  Low-molecular weight and oligomeric components in secondary organic aerosol from the ozonolysis of cycloalkenes and a-pinene,  J. Phys. Chem. A, 108, 10147-10164.