scholarly journals Apply Woods Model in the Predictions of Ambient Air Particles and Metallic Elements (Mn, Fe, Zn, Cr, and Cu) at Industrial, Suburban/Coastal, and Residential Sampling Sites

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Guor-Cheng Fang ◽  
Ci-Song Huang
Keyword(s):  
Particle Size ◽  
Dry Deposition ◽  
Thermal Power ◽  
Sampling Site ◽  
Ambient Air ◽  
Deposition Flux ◽  
Metallic Elements ◽  
Suspended Particulates ◽  
Total Suspended Particulates ◽  
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.

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

2003 ◽  
Vol 19 (1) ◽  
pp. 25-35 ◽  
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.

Optimum particle size for prediction of ambient air arsenic dry deposition in central Taiwan

2012 ◽  
Vol 104-105 ◽  
pp. 255-263 ◽  
Author(s):  
Guor-Cheng Fang ◽  
Yi-Liang Huang ◽  
Jun-Han Huang ◽  
Chia-Kuan Liu
Keyword(s):  
Particle Size ◽  
Dry Deposition ◽  
Ambient Air ◽  
Central Taiwan

Concentrations of nano and related ambient air pollutants at a traffic sampling site

2005 ◽  
Vol 21 (9) ◽  
pp. 259-271 ◽  
Author(s):  
Guor-Cheng Fang ◽  
Yuh-Shen Wu ◽  
Chih-Chung Wen ◽  
Chi-Kwong Lin ◽  
Shih-Han Huang ◽  
...  
Keyword(s):  
Air Pollutants ◽  
Size Range ◽  
Sampling Site ◽  
Ambient Air ◽  
Size Distributions ◽  
Metallic Elements ◽  
Bimodal Size Distribution ◽  
Ambient Air Pollutants ◽  
Central Taiwan ◽  
Nano Size

A micro-orifice uniform deposit impactor (MOUDI) and a nano-MOUDI were used to measure the atmospheric coarse (PM2.5- 10), fine (PM2.5), ultrafine (PM0.056 - 1) and nano (< 0.056 μm) particle concentrations and size distributions at a traffic sampling site in winter in central Taiwan, from November 2004 to January 2005. Concentrations of metallic elements (Fe, Mg, Cr, Zn, Pb, Cu) and major ion (SO2-4; NO-3; NH+4) in particles of various sizes (nano, ultrafine, fine and coarse) were measured. Ambient air particulates generally exhibited a bimodal size distribution in the range 0.056-10 mm. The results show that the concentrations followed the order, Fe-Mg-Cr-Zn-Pb-Cu in PM10, fine, ultrafine and nano-sized particles. Moreover, the data showed that the average metallic elements Fe and Zn have similar concentration distributions: the concentration decreased as the particle size fell in the nano size range.

Seasonal variation in concentration and metallic constituents of atmospheric particulates near the western coast of central Taiwan

2006 ◽  
Vol 22 (5) ◽  
pp. 193-201 ◽  
Author(s):  
Guor-Cheng Fang ◽  
Yuh-Shen Wu ◽  
Wen-Jhy Lee ◽  
Te-Yen Chou ◽  
I-Chen Lin
Keyword(s):  
Fine Particles ◽  
Western Coast ◽  
Metallic Elements ◽  
High Concentration ◽  
Fine Particulates ◽  
Atmospheric Particulates ◽  
Suspended Particulates ◽  
Total Suspended Particulates ◽  
Coarse Particulates ◽  
Central Taiwan

In addition to determining the concentration and metallic constituents of particulate matter at Taichung Harbor in central Taiwan, this study attempts to characterize the mass, metallic elements, composition and concentrations of total suspended particulates (TSP), fine particles and coarse particles. Statistical approaches, such as the Spearman tests, were also adopted to determine the seasonal variations of concentrations of these pollutants. Experimental results indicate that the mean TSP, fine particulate and coarse particulate concentrations in spring and winter are higher than in summer and autumn on the western coast of central Taiwan. Spearman statistical analysis of metallic elements Mn and Pb showed high concentration coefficients for fine and coarse particulates on the western coast of central Taiwan. The order of mean metallic concentrations in TSP, coarse particulates and fine particles was Fe-Zn-Mg-Cu-Cr-Mn-Pb in TSP, Fe-Cu-Zn-Mg-Mn-Pb-Cr in coarse particulates and Fe-Cu-Mg-Pb-Zn-Mn-Cr in fine particulates.

Ambient air metallic elements compositions study in total suspended particulates and dry depositions at Taichung Harbor

2015 ◽  
Vol 74 (5) ◽  
pp. 4163-4170 ◽  
Author(s):  
Guor-Cheng Fang ◽  
Winn-Jung Huang ◽  
Hung-Che Chiang ◽  
Yu-Cheng Chen ◽  
Yuan-Jie Zhuang
Keyword(s):  
Ambient Air ◽  
Metallic Elements ◽  
Suspended Particulates ◽  
Total Suspended Particulates

scholarly journals Measurement of Ambient Air Arsenic (As) Pollutant Concentration and Dry Deposition Fluxes in Central Taiwan

2011 ◽  
Vol 11 (3) ◽  
pp. 218-229 ◽  
Author(s):  
Guor-Cheng Fang ◽  
Chia-Ching Lin ◽  
Jun-Han Huang ◽  
Yi-Liang Huang
Keyword(s):  
Dry Deposition ◽  
Ambient Air ◽  
Pollutant Concentration ◽  
Deposition Fluxes ◽  
Central Taiwan
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