Measurement and modeling of concentrations of ambient air particles, chromium, copper and lead pollutants concentrations, as well as dry deposition in central Taiwan

The main purpose for this study was to monitor ambient air particles and metallic elements (Mn, Fe, Zn, Cr, and Cu) in total suspended particulates (TSPs) concentration, dry deposition at three characteristic sampling sites of central Taiwan. Additionally, the calculated/measured dry deposition flux ratios of ambient air particles and metallic elements were calculated with Woods models at these three characteristic sampling sites during years of 2009-2010. As for ambient air particles, the results indicated that the Woods model generated the most accurate dry deposition prediction results when particle size was 18 μm in this study. The results also indicated that the Woods model exhibited better dry deposition prediction performance when the particle size was greater than 10 μm for the ambient air metallic elements in this study. Finally, as for Quan-xing sampling site, the main sources were many industrial factories under process around these regions and were severely polluted areas. In addition, the highest average dry deposition for Mn, Fe, Zn, and Cu species occurred at Bei-shi sampling site, and the main sources were the nearby science park, fossil fuel combustion, and Taichung thermal power plant (TTPP). Additionally, as for He-mei sampling site, the main sources were subjected to traffic mobile emissions.

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Monitoring and modeling concentration and dry deposition of ambient air particulates and metallic elements Mn, Fe, Zn, Cr and Cu in central Taiwan

Environmental Earth Sciences ◽

10.1007/s12665-012-1960-0 ◽

2012 ◽

Vol 69 (3) ◽

pp. 773-782 ◽

Cited By ~ 2

Author(s):

Guor-Cheng Fang ◽

Ci-Song Huang

Keyword(s):

Dry Deposition ◽

Ambient Air ◽

Metallic Elements ◽

Central Taiwan

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The concentration, dry deposition, composition study of ambient air particulate and metallic pollutants at a traffic sampling site

Toxicology and Industrial Health ◽

10.1191/0748233703th170oa ◽

2003 ◽

Vol 19 (1) ◽

pp. 25-35 ◽

Cited By ~ 3

Author(s):

Guor-Cheng Fang ◽

Yuh-Shen Wu ◽

Chia-Chium Chu ◽

Shih-Han Huang ◽

Jui-Yeh Rau

Keyword(s):

Dry Deposition ◽

Deposition Velocity ◽

Sampling Site ◽

Ambient Air ◽

Metallic Elements ◽

Night Time ◽

Deposition Fluxes ◽

Air Particulate ◽

Time Period ◽

Central Taiwan

Aerosol samples were collected by total suspended particulate (TSP) and dry deposition plate (downward, upward) from August to November in 2003 in central Taiwan. The particulate metallic elements (Fe, Pb, Zn, Cu, Mg and Mn) were also measured in this study during the summer and autumn periods of 2003. The results obtained in this study indicated that the ambient air particulate mass concentrations in the daytime period (averaged 975.4 mg/m3) were higher than the night-time period (averaged 542.1 mg/m3). And the downward dry deposition fluxes (averaged 58.12 mg/m2-sec) were about 2.2 times that of upward dry deposition fluxes (averaged 26.37 mg/m2-sec) in the daytime period. Furthermore, the average downward dry deposition fluxes (averaged 26.54 mg/m2-sec) were also about 2.3 times that of upward dry deposition fluxes (averaged 11.52 mg/m2-sec) in the nighttime period. Moreover, the average downward dry deposition fluxes are greater than the upward dry deposition fluxes for all the heavy metals in either daytime or night-time period. In addition, the deposition velocity for mass, metallic elements (Fe, Pb, Zn, Cu, Mg and Mn) during daytime and night-time period were also calculated. In addition, the average TSP composition (mg/g) in the daytime period of the metallic elements (Fe, Pb, Zn, Cu, Mg and Mn) is 1.73, 0.26, 1.16, 0.28, 0.43 and 0.12 mg/g, respectively. And the average TSP composition in the night-time period of the metallic elements (Fe, Pb, Zn, Cu, Mg and Mn) is 3.02, 0.33, 1.57, 0.41, 0.58 and 0.13 mg/g, respectively at traffic sampling site of central Taiwan.

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