Characteristics and Receptor Modeling of Atmospheric PM2.5 at Urban and Rural Sites in Pingtung, Taiwan

Chao

et al. 2010

Aerosol Air Qual. Res.

The characteristics and distribution of metal contents emitted from a power plant fueled by heavy oil and its impact to the ambient atmosphere near the power plant was investigated. The current investigation measured toxic (As, Cd, Cr, Hg, Ni and Pb), anthropogenic (Ba, Cu, Mn, Sb, Se, Sr, Ti, V and Zn) and crust (Al, Ca, Fe, K and Mg) elements from a 2,000 MW heavy oil-fired power plant. Results showed the emission concentration from the power plant contributed to 17,976 kg/yr annual emission of anthropogenic elements, which was significantly higher than those from some electrical arc furnaces and coke ovens in Taiwan. ). This study also applies nonparametric statistical analyses for evaluating the relationship between metal concentrations and operational parameters (including emitted CO 2 , O 2 , flue gas emission temperature, flue gas velocity, moisture, heavy oil consumption rate, boiler steam temperature, boiler operational pressure, and electricity). Findings show negative correlations between most toxic metals (As, Cd, Cr and Hg) and operational parameters, though some pairs were not statistically significant. The current study provides only preliminary statistical results between metal concentrations and operational parameters due to small sample sizes. Further investigation requires larger sample sizes.

Section: Introductionmentioning

confidence: 99%

Characteristics of Heavy Metals Emitted from a Heavy Oil-Fueled Power Plant in Northern Taiwan

Chao

et al. 2010

Aerosol Air Qual. Res.

“…This study further applied a receptor model (CMB8) on the basis of chemical mass balance (CMB) to assess the types of potential sources and their contributions to PM 10 (Ke et al 2007;Kothai et al 2008;Wang et al 2008;Yatkin and Bayram 2008). The types of prominent sources and their contributions to PM 10 sampled at the coastal and island sites in the Minjiang estuary are illustrated in Fig.…”

Section: Source Apportionment Of Pm 10 In the Minjiang Estuarymentioning

confidence: 99%

“…The source apportionment of atmospheric PM 10 was further assessed using a receptor model based on chemical mass balance (CMB) (Ke et al 2007;Kothai et al 2008;Yatkin and Bayram 2008;Wang et al 2008). Since the detailed descriptions of CMB receptor model are available elsewhere, only a brief summary is presented below.…”

Section: Chemical Mass Balanced (Cmb) Receptor Modelmentioning

confidence: 99%

Inter-comparison of Chemical Composition and Originality of Atmospheric PM10 at Coastal Regions and Offshore Islands in the Subtropical East Asia

Liao

Yuan

et al. 2018

Aerosol Sci Eng

Inter-comparison on the chemical characteristics, spatiotemporal variation, and source originality of atmosphere PM 10 at the coastal regions and offshore islands of subtropical region in East Asia was investigated. A total of six sampling sites including three coastal and three island sites over the Minjiang estuary were selected for simultaneously manually sampling PM 10 to investigate the differences of coastal and island PM 10 concentration, chemical properties, and emission sources. After sampling, an ion chromatographer (IC) was used to analyze the concentration of major anions (F − , Cl − , SO 4 2− , and NO 3 − ) and cations (NH 4 + , K + , Na + , Ca 2+ and Mg 2+ ). The metallic elements (Na, Ca, Al, Fe, Mg, K, Zn, Cr, Ti, Mn, Ni, Pb, and Cd) of PM 10 were measured with an inductively coupled plasma-atomic emission spectrometer (ICP-AES). The carbonaceous contents, including elemental, organic, and total carbons (OC, EC, and TC), of PM 10 were analyzed with an elemental analyzer (EA). The source apportionment of PM 10 was further resolved by a receptor model based on chemical mass balance (CMB). Field measurement results showed that high concentrations of PM 10 (102 ± 25 μg/m 3 ) were commonly observed from late fall to early winter. The PM 10 concentration showed a consistently descending trend from the west coastline to the far east islands, with the highest PM 10 concentration at the coastal site (Site HQ) and the lowest at the far east island site (Site DY) in all seasons. Secondary inorganic aerosols (SIAs) and crustal materials were two most abundant compounds in PM 10 . Increasing anthropogenic trace elements was commonly observed in spring and winter, while northern monsoons were blown. High OC/EC ratios showed that secondary organic aerosols (SOAs) could be formed in the atmosphere of Minjiang estuary. Results from CMB receptor modeling indicated that the major sources of atmospheric PM 10 at the coastal and offshore island regions of the Minjiang estuary were soil dusts (13-33%), secondary aerosols (15-30%), transport emissions (11-17%), sea salts (8-27%), and agricultural debris burning (2-8%). Particularly, during the poor air quality periods, a rising contribution of industrial emissions (1-16%) was resolved, suggesting that atmospheric PM 10 over the Minjiang estuary was mainly attributed to cross-boundary transport rather than local emissions.

“…In urban and industrial environments, however, particles not only contain metals, but also include toxic organic compounds, such as PAHs, whose concentrations are greater in fine and ultrafine particles. This fact has caused concern about various pollution sources close residential habitations (Wang et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

The Size Distributions of Ambient Air Metallic Pollutants by Using a Multi-Stage MOUDI Sampler

Fang

Chang

Tsai

et al. 2014

Aerosol Air Qual. Res.