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Student BIOS

LEE Berto Paul Yok Long

PhD in Environmental Science, Policy and Management - 2016

MPhil in Atmospheric Environmental Science, HKUST
B.Sc. in Chemistry, HKUST

Supervisor:  Prof. CHAN Chak Keung       Co-Supervisor: Prof. CHAN Chi Ming

Research Topic  
Real-time characterization of urban aerosol at a roadside environment in Hong Kong using Aerosol Mass Spectrometry
Keywords  
AMS, urban pollution, aerosol, particulate matter
Abstract  

To date, studies on particulate matter in Hong Kong have been vastly based on filter sampling and off-line analysis, with coarse time resolution (24 to 48 h per sample) and the need for time- and material-consuming post-sampling laboratory analyses. The main objective of this work is a comprehensive real-time assessment of particulate matter composition, temporal trends in concentration on different scales (diurnal, weekly, monthly, seasonally), size distributions and source apportionment at the roadside in a typical urban city environment in Hong Kong, using an Aerodyne high-resolution time of flight aerosol mass spectrometer (HR-ToF-AMS) and additional data from collocated instruments measuring gas-phase and particle-phase species as well as metereological parameters. The results of this study will serve to better characterize important primary aerosol sources in the urban environment (particularly traffic and residential/commercial emissions) and to identify contributions of long-range transport (i.e. non-local emissions) on road-side pollution and to ultimately provide a basis for the establishment of appropriate  regulation and mitigation strategies.   

Journal Publication
Berto P. Lee,Yong Jie Li, Jian Zhen Yu, Peter K. K. Louie, Chak K. Chan (2013) Physical and chemical characterization of ambient aerosol by HR-ToF-AMS at a suburban site in Hong Kong during springtime 2011. JOURNAL OF GEOPHYSICAL RESEARCH: ATMOSPHERES, 118, 1-15, doi:10.1002/jgrd.50658.
Berto P. Lee, Yong Jie Li, Richard C. Flagan, Charles Lo, Chak K. Chan (2013) Sizing Characterization of the Fast-Mobility Particle Sizer (FMPS) Against SMPS and HR-ToF-AMS. Aerosol Science and Technology, 47, 1030-1037, DOI: 10.1080/02786826.2013.810809.
Y. J. Li, B. Y. L. Lee, J. Z. Yu, N. L. Ng, C. K. Chan (2013) Evaluating the degree of oxygenation of organic aerosol during foggy and hazy days in Hong Kong using high-resolution time-of-flight aerosol mass spectrometry (HR-ToF-AMS). Atmos. Chem. Phys., 13, 8739-8753.
Ming Chee Yeung, Berto P. Lee, Yong Jie Li, Chak K. Chan (2014) Simultaneous HTDMA and HR-ToF-AMS measurements at the HKUST Supersite in Hong Kong in 2011. JOURNAL OF GEOPHYSICAL RESEARCH: ATMOSPHERES, 119, 9864–9883, DOI: 10.1002/2013JD021146.
Meng, J. W., Yeung, M. C., Li, Y. J., Lee, B. Y. L., Chan, C. K (2014) Size-resolved cloud condensation nuclei (CCN) activity and closure analysis at the HKUST Supersite in Hong Kong. Atmos. Chem. Phys., 14, 10267-10282, doi:10.5194/acp-14-10267-2014.
Berto P. Lee,Yong Jie Li, Jian Zhen Yu, Peter K. K. Louie, Chak K. Chan (2015) Characteristics of submicron particulate matter at the urban roadside in downtown Hong Kong—Overview of 4 months of continuous high-resolution aerosol mass spectrometer measurements. JOURNAL OF GEOPHYSICAL RESEARCH: ATMOSPHERES, 120, 7040-7058, DOI: 10.1002/2015JD023311.
K. Cheung, Z.H. Ling, D.W. Wang, Y. Wang, H. Guo, B. Lee, Y.J. Li, C.K. Chan (2015) Characterization and source identification of sub-micron particles at the HKUST Supersite in Hong Kong. Science of The Total Environment, 527-528, 10.1016/j.scitotenv.2015.04.087.
Hanyang Man, Yujiao Zhu, Fei Ji, xiaohong yao, Ngai-Ting Lau, Yong Jie Li, Berto P. Lee, Chak Keung Chan (2015) Comparison of daytime and nighttime new particle growth at the HKUST Supersite in Hong Kong. Environmental Science & Technology, 49, 10.1021/acs.est.5b02143 .
Huang, D. D., Li, Y. J., Lee, B. P., Chan, C. K. (2015) Analysis of Organic Sulfur Compounds in Atmospheric Aerosols at the HKUST Supersite in Hong Kong Using HR-ToF-AMS. Environmental Science & Technology, 49, 3672-3679.
Y. J. Li, B. P. Lee, L. Su, J. C. H. Fung, C.K. Chan (2015) Seasonal characteristics of fine particulate matter (PM) based on HR-ToF-AMS measurements at the HKUST Supersite in Hong Kong. Atmos. Chem. Phys., 15, 37-53, 10.5194/acp-15-37-2015.
H.Y. Cheung, M.C. Yeung, Y.J. Li, B. P. Lee, C.K. Chan (2015) Relative Humidity-Dependent HTDMA Measurements of Ambient Aerosols at the HKUST Supersite in Hong Kong, China . Aerosol science and technology, 49, 643-654, DOI: 10.1080/02786826.2015.1058482.
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