A5091851545- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Heavy metals in environment
- Atmospheric aerosols and clouds
- Toxic Organic Pollutants Impact
- Geochemistry and Geologic Mapping
- Adsorption and biosorption for pollutant removal
- Vehicle emissions and performance
- Geochemistry and Elemental Analysis
- Mercury impact and mitigation studies
- Coastal wetland ecosystem dynamics
- Archaeology and ancient environmental studies
- Spectroscopy and Laser Applications
- Water Quality Monitoring and Analysis
- Peatlands and Wetlands Ecology
- Radioactive contamination and transfer
- Geology and Paleoclimatology Research
- Chromium effects and bioremediation
- Gas Sensing Nanomaterials and Sensors
- Statistical Methods and Applications
- Automated Road and Building Extraction
- Transportation Planning and Optimization
- Atmospheric Ozone and Climate
- Air Quality Monitoring and Forecasting
- Ecology and biodiversity studies
Hong Kong Chu Hai College
2020-2022
Research Center for Environmental Changes, Academia Sinica
2018-2019
National Taiwan University
2004-2016
Institute of Earth Sciences, Academia Sinica
2013-2014
Hong Kong Polytechnic University
2003-2010
Guangzhou Institute of Geochemistry
2008
Chinese Academy of Sciences
2008
China University of Geosciences
2008
National Cheng Kung University
2006
Serdang Hospital
1991
Abstract. In this study, 121 daily PM2.5 (aerosol particle with aerodynamic diameter less than 2.5 μm) samples were collected from an urban site in Beijing four months between April 2009 and January 2010 representing the seasons. The determined for various compositions, including elements, ions, organic/elemental carbon. Various approaches, such as chemical mass balance, positive matrix factorization (PMF), trajectory clustering, potential source contribution function (PSCF), employed...
A 268 cm section of sediment core from Liangzhi Lake in Hubei province central China was used to assess the use and accumulation metals lake past 7,000 years. The concentrations trace metals, including Cu, Pb, Ni, Zn, major elements, Ca, Fe, Mg, a 14C- dated segment were analyzed. Historical trends on input around 5000 BC present recorded sediments, representing about years history mining utilization China. Zn increased gradually 3000 ± 328 BC, indicating start Bronze Age ancient During...
The Pearl River Delta (PRD) is one of the largest fast-developing economic zones in China. Hong Kong and mainland part PRD differed socio-economic development history chemical management policies. Polyurethane foam (PUF)-passive air sampling (PAS) was deployed at 21 regional quality monitoring stations across summer winter, respectively. Dichloro-diphenyl-trichloroethane (DDT), chlordane hexachlorobenzene (HCB) were analyzed with GC-MS. High total DDT (240-3700 pg m(-3)) (100-2600...
Abstract. The chemical composition of fine particulate matter (PM2.5), the size distribution and number concentration aerosol particles (NCN), cloud condensation nuclei (NCCN) were measured at northern tip Taiwan during an intensive observation experiment from April 2017 to March 2018. parameters hygroscopicity (i.e., activation ratio, diameter kappa CCN) retrieved measurements. Significant variations found in aerosols (kappa – κ 0.18–0.56, for water vapor supersaturation SS 0.12 %–0.80 %),...
The historical application/usage and management of chemicals in Hong Kong have been distinctively different from mainland China. In the present study, polybrominated diphenyl ethers (PBDEs) were measured year-round atmospheric particle samples collected urban Guangzhou for comparison. concentrations BDE-209 Σ9PBDEs (defined as sum BDE-28, -47, -66, -100, -99, -154, -153, -138 -183) ranged 758 to 21 900 pg m−3 31.8 3320 m−3, respectively, 8.5 895 1.0 386 respectively. Elevated PBDEs observed...
Abstract Mineral dust particles exert profound impacts on air quality, visibility, and ocean biogeochemistry. Interactions between other anthropogenic pollutants modify not only the size spectrum morphology but also physicochemical properties of particles, thereby affecting their radiative ability to act as cloud condensation nuclei in turn impact climate. Here we report field observations surface chemical transformations a super Asian plume captured coastal areas China adjacent marginal...
Abstract. The aim of this study is to investigate the seasonal variations in physicochemical properties atmospheric ultra-fine particles (UFPs, d ≤ 100 nm) and submicron (PM1, 1 µm) an east Asian urban area, which are hypothesized be affected by interchange summer winter monsoons. An observation experiment was conducted at TARO (Taipei Aerosol Radiation Observatory), aerosol station Taipei, Taiwan, from October 2012 August 2013. measurements included mass concentration chemical composition...
Abstract. The chemical composition of fine particulate matters (PM2.5), the size distribution and number concentration aerosol particles (NCN) cloud condensation nuclei (NCCN) were measured at northern tip Taiwan Island during a campaign from April 2017 to March 2018. parameters hygroscopicity (i.e. activation ratio, diameter kappa) retrieved measurements. Significant variations found in aerosols, which suggested be subject various pollution sources, including aged air pollutants originating...