Mylene G. Cayetano, Ph.D.
Professor 2
Contact(s): or or
Educ. Background:
Adjunct Research Fellow, International Environmental Research Institute (2016-present)
Ph.D. Environmental Science and Engineering (Air Quality), Gwangju Institute of Science
and Technology,South Korea (2012)
M.S. Environmental Science, University of the Philippines, Diliman
B.S. Chemistry, University of the Philippines, Diliman

Head: Environmental Pollution Studies Laboratory

Interests & Research ProjectsCourses Teaching / Other InformationPublication


  • Air, Water and Soil contaminants and transport
  • Environmental toxicology
  • Air and Water Quality Management
  • Sustainable Transport
  • Emissions Inventory
  • Green Chemistry
  • Aquatic ecosystems rehabilitation
  • Climate Change and co-benefits
  • Cook stoves and indoor air pollution
  • Clean Air for megacities and smaller cities

Research Projects:

  • Synergistic Capacity Advancement for the Management of Laguna Lake: SCALE (2017)
  • Understanding the Impacts of Climate Change and Towards Adaptation in the Philippines (2017-2022), Year 1: Assessing the integrity of megacities environment: air and water quality
  • Prevented emissions of carbon dioxide, nitrous oxide and particulate matter due to fleet shifting from conventional to electric tricycle (2017)
  • Technical assistance to the air quality monitoring system of Rotary Club of Makati (2016)
  • Determination of particulate and elemental emission factors from selected area and point sources in Metro Manila (2016)
  • LEAP PH Megacities: Local Emissions, Air Pollution and Public Health studies in Philippine megacities (2015-2016)
  • Polycylic Aromatic Hydrocarbons (PAHs) in size-segregated atmospheric particulate matter from a traffic site in Quezon City, Philippines (2015)
  • Manila Aerosol Characterization Experiment (2015)
  • Emission factors from motor vehicle pollution sources using a wind tunnel set-up (2014-2015)
  • Determination of Particulate and Elemental emission factors from Selected Area and Point Sources in Metro Manila (2014)

Courses Teaching:

  • Env. Sci. 1 (Environment and Society)
  • Env. Sci. 232.1 (Water Quality Sampling)
  • Env. Sci. 271.1 (Photonic Techniques)
  • Env. Sci. 271 (Principles of Photonic Techniques for Environmental Science)
  • Env. Sci. 297 (Special Topics in Environmental Science)
  • Env. Sci. 299 (Independent Master’s Study)
  • Env. Sci. 399 (Independent Doctoral Study)
  • Meteo 201 (Synoptic Meteorology)
  • Meteo 203 (Methods of Analytical Meteorology and Oceanography)
  • Meteo 204 (Tropical Meteorology)
  • Meteo 206 (Hydrometeorology)
  • Meteo 211 (Climatology)
  • Meteo 213 (Agrometeorology)
  • Meteo 221 (Physical Meteorology)
  • Meteo 222 (Satellite Meteorology)
  • Meteo 223 (Radar Meteorology)
  • Meteo 224 (Air Pollution Meteorology)
  • Meteo 225 (Cloud and Precipitation Physics)

Recent Publications:

  • Teh, T.R., Santos, J.A., Cayetano, M., and Vital, P. (2020). Detection of Vibrio parahaemolyticus in fish samples from selected wet markets in Laguna, Philippines, using loop-mediated isothermal amplification (LAMP) and real-time polymerase chain reaction (qPCR). Philippine Science Letters, 13.
  • Kecorius, S., Madueño, L., Löndahl, J., Vallar, E., Galvez, M.C., Idolor, L., Cayetano, M., Müller, T., Birmili, W., Wiedensohler, A.(2019). Respiratory tract deposition of inhaled roadside ultrafine refractory particles in a polluted megacity of South-East Asia. Science of The Total Environment, 663, 265-274, 10.1016/j.scitotenv.2019.01.338.
  • Madueño, L., Kecorius, S., Birmili, W., Müller, T., Simpas, J., Vallar, E., Galvez, M.C., Cayetano, M., Wiedensohler, A. (2019). Aerosol particle and black carbon emission factors of vehicular fleet in Manila, Philippines. Atmosphere, 10 (10), Article number 603.more
  • Uldo, D.A., Feliciano, C., Cayetano, M., De Guzman, Z., Gamma irradiationfor the inactivation of Aspergillus niger in aged cotton fabric, Radiation Physics and Chemistry (2019),doi:
  • Bagtasa, G., Cayetano, M.G., Yuan, C.-S., Uchino, O., Sakai, T., Izumi, T., Morino, I., Nagai, T., Macatangay, R.C., Velazco, V.A. (2019). Long-range transport of aerosols from East and Southeast Asia to northern Philippines and its direct radiative forcing effect. Atmospheric Environment, 218, Article number 117007.more
  • Alas, H.D., Müller, T., Birmili, W., Kecorius, S., Cambaliza, M.O., Simpas, J.B.B., Cayetano, M., Weinhold, K., Vallar, E., Galvez, M.C. and Wiedensohler, A. (2018). Spatial Characterization of Black Carbon Mass Concentration in the Atmosphere of a Southeast Asian Megacity: An Air Quality Case Study for Metro Manila, Philippines. Aerosol Air Qual. Res. 18: 2301-2317.
  • Bagtasa, G., Cayetano, M. G., and Yuan, C.-S. (2018). Seasonal variation and chemical characterization of PM2.5 in northwestern Philippines, Atmospheric Chemistry and Physics, 18, 4965–4980,, 2018.
  • Hagad, H.R. and Cayetano, M.G.(2018). PM10 and surface dust source characterization in Baguio City Central Business District (CBD), Philippines. Environmental Geochemistry and Health. doi:
  • Borlaza, L.J.S., Cosep, E.M.R., Kim, S., Lee, K., Joo, H., Park, M., Bate, D., Cayetano, M.G., Park, K.,(2018). Oxidative potential of fine ambient particles in various environments, Environmental Pollution , doi:
  • Jolejole, M. E., Kim, J.B., Jeon, D.J., Cayetano, M.G.,  Kim, J. H. (2018). Scenario study of the effect of different land use to a sub-basin in Yeongsan River basin using SWAT model. Desalination and Water treatment. 120. 198-204. 10.5004/dwt.2018.22884.
  • Kecorius, S., Tamayo, E.G., Galvez, M. C., Madueño, L., Betito, G., Cayetano, M.G., Vallar, E., Wiedensohler, A. (2018). Activity Pattern of School/University Tenants and their Family Members in Metro Manila – Philippines. Aerosol and Air Quality Research. 18. 2412-2419. 10.4209/aaqr.2018.02.0069.
  • Kecorius, S., Madueño, L., Vallar, E., Alas, H., Betito, G., Birmili, W., Cambaliza, M.O., Catipay, G., Cayetano, M.G., Galvez, M.C., Lorenzo, G., Müller, T., Simpas, J.B., Tamayo, E.G., Wiedensohler, A. (2017) Aerosol particle mixing state, refractory particle number size distributions and emission factors in a polluted urban environment: Case study of Metro Manila, Philippines, Atmospheric Environment, 170, 169-183, ISSN 1352-2310,
  • Tamayo, E., Cayetano, M., Kwan, C. (2017). Miniaturized solvent extraction and cleanup method for polycyclic aromatic hydrocarbons in air particulate matter by gas chromatography/mass spectrometry. Journal of Environmental Science and Management, 20(2),34-39.
  • Espaldon, M., Aragones, L., Muallil, R., Cayetano, M., Cabrera, O., Perez, G., Ringor, C., Moya, T. (2017). Baselining, Yardstick, and Agenda Setting for Philippine Research Agenda in Environmental Science.
  • Gibe, H. P. and Cayetano, M. G.: Spatial estimation of air PM2.5 emissions using activity data, local emission factors and land cover derived from satellite imagery, Atmos. Meas. Tech. Discuss., doi:10.5194/amt-2017-14, in review, 2017.
  • Tamayo, E.G.T., Cayetano, M.G., Kwan, C.S., Müller, K. 2016. Development of an analytical method for the solvent extraction of Polycyclic Aromatic Hydrocarbons (PAHs) in air particulate matter, Journal of Environmental Science and Management (Submitted as of 31 August, 2016)
  • Jung, J., Lee, K.Y., Cayetano, M.G., Batmunkh, T., and Kim, Y.J. (2015). Optical and hygroscopic properties of long-range transported haze plumes observed at Deokjeok Island off the west coast of the Korean Peninsula under the Asian continental outflows. Journal of Geophysical Research-Atmospheres. 120, 8861-8877
  • Vallar, E., Galvez, M.C., Castilla, R., Cayetano, M.G., Simpas, J., Cruz, M., Lamorena-Lim, R., Lim, L.H., Pabroa, P.C., Macatangay, R., Bagtasa, G., Peralta, T., Rosete, J., and Morris, V. (2015) Analysis of tropospheric and columnar Ozone measurements in Manila, Philippines.ACRS Publication
  • Cayetano, M.G., Rosales, C.M., and Lamorena-Lim, R.B. (2015) Determination of particulate and elemental emission factors from selected area and point sources in Metro Manila, UNU-GIST Publication.
    Previous Publications:
  • Cayetano, M.G., Hopke, P.K., Lee, K.H., Jung, J., Batmunkh, T., Lee, K., and Kim, Y.J. Investigations of transported and local emissions on particle compositions in Korea. Aerosol and Air Quality Research, (accepted as of July 2013
  • Tong Zhu, Cayetano, M.G., Chen, C., Guttikunda, S., Hu, M., Kim, Y.J., Kondo, Y., Louie, P.K., Molina, L., Morino, Y., Oanh, N.T.K., Olaguer, E.P., Permadi, D.A., Pongkiatkul, P., Salam, A., Shao, M., Sun, X., Wakamatsu, S., Wang, H., and Zawar-Reza, P. (2012). WMO/IGAC Impacts of Megacities on Air Pollution and Climate. Chapter 3 – Asia. p. 59~140
  • Cayetano, M.G., Kim, Y.J., Jung, J.S., Batmunkh, T., Lee, K.Y., Kim, S.Y., Kim, K.C., Kim, D.G., Lee, S.J., Kim, J.S., and Chang, L.S. 2011. Observed chemical characteristics of long range transported particles at a marine background site in Korea. J. Air & Waste Manage. Assoc. 61:1–12 DOI:
  • Batmunkh, Y.J.Kim, K.Y.Lee, Cayetano M. G., J.S.Jung, S.Y. Kim, D.G.Kim, K.C.Kim, S.J. Lee, J.S. Kim, L.S. Chang, and J.Y. An. 2011. Time-resolved measurements of PM2.5carbonaceous aerosols at Gosan, Korea. J. Air & Waste Manage. Assoc. 61:1–10. DOI:10.1080/10473289.2011.609761
  • Santiago, E. C., and Cayetano M. G., 2010. Organochlorine Pesticides in Ambient Air in Selected Urban and Rural Residential Areas in the Philippines Derived from Passive Samplers with Polyurethane Disks, Bulletin of Environmental Contamination and Toxicology, 1-6.
  • Jung, J., Y. J. Kim, K. Y. Lee, Cayetano M. G., T. Batmunkh, J. H. Koo, and J. Kim.. Spectral optical properties of long-range transport Asian dust and pollution aerosols over Northeast Asia in 2007. Atmos. Chem. Phys. Discuss., 10(2), 2397-2444.
  • Santiago, E. C., and Cayetano M. G. 2007. Polycyclic aromatic hydrocarbons in ambient air in the Philippines derived from passive sampler with polyurethane foam disk. Atmospheric Environment, 41(19), 4138-4147