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Student BIOS

LIU Qianyun

PhD Candidate in Environmental Science, Policy and Management

Bachelor of Science, College of Chemistry, Beijing Normal University

Email: qliuae@ust.hk

Supervisor:  Prof. YU Jianzhen       Co-Supervisor: Prof. CHAN Chak Keung

Research Topic  
Secondary Organic Aerosol Study Using Potential Aerosol Mass (PAM)
Keywords  
SOA, photo-oxidation, PAM chamber
Abstract  

Potential Aerosol Mass (PAM) can be defined as the maximum aerosol mass that the oxidation of precursor gases produces. In the measurement, all precursor gases are rapidly oxidized with extreme amounts of oxidants to low volatility compounds, resulting in the aerosol formation. Oxidation occurs in a small, simple, flow-through chamber that has a short residence time and is irradiated with ultraviolet light. The amount of the oxidants ozone (O3), hydroxyl (OH), and hydroperoxyl (HO2) were measured directly and can be controlled by varying the UV light and the relative humidity. This PAM method is being developed for measuring potential aerosol mass in the atmosphere, but is also useful for examining SOA processes in the laboratory and in environmental chambers.

Presentations/Talks
Title Date Length Type and Location
Climate change, ice and sea level rise. 2015-05-04 20 min Class Presentation
On the Regulation of Geoengineering 2015-06-01 20 min Class Presentation
Do People Respond to Haze Alerts? 2015-08-01 15 min Department Seminar
From Rubbish Hill to "Phoenix Flat" 2015-09-01 10 min Department Seminar
Teaching Assistant
Semester Course Code Course Title Class Size
2014-15 Fall ENVR3220 Energy Resources and Usage 38
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