YU Liya E.

Associate Professor
Department of Civil and Environmental Engineering

Postal Address: Department of Civil and
  Environmental Engineering,
  National University of Singapore
  1 Engineering Drive 2, E1A 07-03
  Singapore 117576
Tel: (65) 6516 6474
Email: liya.yu@nus.edu.sg
Office: E1-05-11


Dr. Yu's teaching and research interests focus on air quality and aerosol sciences, with emphasis on characterization of aerosols emitting from combustion sources, and behavior of oxygenated organic compounds in atmospheric particulates, in particular, processes of photooxidation and chemical transformation of dicarboxylic acids. Dr. Yu's research group also strives to better understand impacts of transboundary biomass burning smoke on urban atmospheric environment.

In collaboration with Yong Loo Lin School of Medicine at NUS, Dr. Yu expands her research interests to explore potential health effects of engineered nanomaterials. Dr. Yu also works with a multi-disciplinary team at NUS to examine potential impacts of engineered nanomaterials on environment and biological systems.


  • Ph.D. (Civil Env. Eng.) Stanford, USA, 1997
  • M.Sc. (Civil Env. Eng.) Stanford, USA, 1990

Honours & Awards

  • Teaching Commendation Award, NUS (2006-2007)
  • Teaching Commendation Award, NUS (2005-2006)
  • Teaching Commendation Award, NUS (2001-2002)
  • Teaching Commendation Award, NUS (2000-2001)

Professional Activities

  • Air & Waste Management Association (A&WMA)
  • American Association for Aerosol Research (AAAR)
  • American Chemical Society (ACS)
  • Environmental Engineering Society of Singapore

Teaching Areas

  • Air pollution and air quality management
  • Atmospheric chemistry and physics
  • Aerosol science & technology
  • Fundamentals in Environmental Protection

Research Interests

  • Air quality and combustion aerosols
  • Photochemical transformation of atmospheric particulates
  • Characterization of organic aerosols
  • Health effects of engineered nanoparticles

Research job opportunity

Full-time research positions and part-time student research assistantship are available to characterize airborne aerosols concerning their atmospheric properties and behaviors. The research work involves operating monitoring and characterization, instrument operation, chemical analyses and data processing. Applicants having background in chemical engineering, environmental engineering, environmental study, chemistry or relevant experiences and strong interests of exploring atmospheric aerosol sciences and urban air quality are encouraged to send her/his CV and UG transcript to liya.yu@nus.edu.sg.

Selected Publications

  1. Krishnan P, Liu M, Itty PA, Liu Z, Rheinheimer V, Zhang M-H, Monteiro PJM, Yu LE, “Characterization of photocatalytic TiO2 powder under varied environments using near ambient pressure X-ray photoelectron spectroscopy”, Sci. Rep. 7-43298 (2017).
  2. Reid JS, Lagrosas ND, Jonsson HH, Reid EA, Atwood SA, Boyd TJ, Ghate VP, Xian P, Posselt DJ, Simpas JB, Uy SN, Zaiger K, Blake DR, Bucholtz A, Campbell JR, Chew BN, Cliff SS, Holben BN, Holz RE, Hyer EJ, Kreidenweis SM, Kuciauskas AP, Lolli S, Oo M, Perry KD, Salinas SV, Sessions WR, Smirnov Al, Walker AL, Wang Q, Yu L, Zhang J, Zhao Y. “Aerosol meteorology of Maritime Continent for the 2012 7SEAS southwest monsoon intensive study – Part 2: Philippine receptor observations of fine-scale aerosol behavior”, Atmos. Chem. Phys. 16:14057–14078 (2016)
  3. Reid JS, Lagrosas ND, Jonsson HH, Reid EA, Sessions WR, Simpas JB, Uy SN, Boyd TJ, Atwood SA, Blake DR, Campbell JR, Cliff SS, Holben BN, Holz RE, Hyer EJ, Lynch P, Meinardi S, Posselt DJ, Richardson KA, Salinas SV, Smirnov A, Wang Q, Yu L, Zhang J. “Observations of the temporal variability in aerosol properties and their relationships to meteorology in the summer monsoonal South China Sea/East Sea: the scale-dependent role of monsoonal flows, the Madden–Julian Oscillation, tropical cyclones, squall lines and cold pools”, Atmos. Chem. Phys. 15:1745–1768 (2015).
  4. Atwood SA, Reid JS, Kreidenweis SM, Yu LE, Salina SV, Chew BN, Balasubramanian R. “Analysis of source regions for smoke events in Singapore for the 2009 El Nino burning season”, Atmos. Environ. 78:219–230 (2013).
  5. Yang LM, Nguyen DM, Jia SG, Reid JS, Yu LE. “Impacts of biomass burning smoke on the distributions and concentrations of C2–C5 dicarboxylic acids and dicarboxylates in a tropical urban environment”, Atmos. Environ. in press (2013).
  6. Balasubramanian SK, Poh KW, Ong CN, Kreyling WG, Ong WY, Yu LE. “The effect of primary particle size on biodistribution of inhaled gold nano-agglomerates”, Biomaterials, 34:5439-5452 (2013).
  7. Salinas SV, Chew BN, Miettinen J, Campbell JR, Welton EJ, Reid JS, Yu LE, Liew SC. “Physical and optical characteristics of the October 2010 haz