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You searched for subject:(gas particulate partition). Showing records 1 – 2 of 2 total matches.

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NSYSU

1. Jen, Yi-Hsiu. Tempospatical Distribution, Gas-solid Partition, and Long-range Transportation of Atmospheric Mercury at an Industrial City and Offshore Islands.

Degree: PhD, Environmental Engineering, 2013, NSYSU

The issues of atmospheric mercury have been discussed more popularly in the world. This study measured atmospheric mercury by using the modified sampling and analytical methods from four cases of small-scale regions to large-scale regions, and further investigated the tempospatial variation of atmospheric mercury, gas-particulate partition, the correlation analysis of mercury concentration with meteorological parameters and criteria air pollutants, the transportation routes of mercury, and the comparison of mercury concentration in urban areas and other stationary sources. First of all, an one-year field measurement results at a semi-conductor manufacturing complex showed that the seasonal averaged concentrations of TGM and Hgp were in the range of 3.30-6.89 and 0.06-0.14 ng/m3, respectively, while the highest 24-hr TGM and Hgp concentrations were 10.33 and 0.26 ng/m3, respectively. Atmospheric mercury apportioned as 92.59-99.01% TGM and 0.99-7.41% Hgp. As a whole, the highest and lowest concentrations of TGM were observed in the winter and summer sampling periods, respectively, while the concentration of Hgp did not vary much seasonally. The highest TGM concentrations were always observed at the downwind sites, indicating that the semi-conductor manufacturing complex was a hot spot of mercury emission source, which caused severe atmospheric mercury contamination over the investigation region. In an unique mercury-contaminated remediation site, an one-year field measurement results showed that the seasonal averaged concentrations of TGM and Hgp were in the range of 5.56-12.60 and 0.06-0.22 ng/m3, respectively, while the seasonal averaged deposition fluxes of dust-fall mercury were in the range of 27.0 to 56.8 g/km2-month. The maximum concentrations of TGM and Hgp were 38.95 and 0.58 ng/m3, respectively. The atmospheric mercury apportioned as 97.42-99.87% TGM and 0.13-2.58% Hgp. As a whole, the concentrations of mercury species were higher in the spring and summer than those in the winter and fall. The southern prevailing winds generally brought higher mercury concentrations, while the northern winds brought relatively lower mercury concentrations, to the nearby fishing villages. The hot spot of mercury emissions was allocated at the southern tip of the abandoned chlor-alkali manufacturing plant. On-site continuous monitoring of TGM at the mercury-contaminated remediation site observed that TGM concentrations during the open excavation period were 2 to 3 times higher than those during the non-excavation period. In a heavily polluted industrial city, Kaohsiung, field measurement results showed that TGM and Hgp concentrations were in the range of 2.38-9.41 and 0.02-0.59 ng/m3 with the highest concentrations of 9.41 and 0.59 ng/m3, respectively. Moreover, the partition of atmospheric mercury was apportioned as 92.71-99.17% TGM and 0.83-7.29% Hgp. As a whole, the concentrations of mercury species in the dry season were higher than those in the wet season, no matter of TGM or Hgp concentration. The TGM and Hgp… Advisors/Committee Members: Guor-Cheng Fang (chair), Chung-Shin Yuan (committee member), Yuan-Chung Lin (chair), Ying-I Tsai (chair), Chung-Gai Lee (chair), Shui-Jen Chen (chair).

Subjects/Keywords: backward trajectory simulation; long-range transportation; correlation analysis; gas-particulate partition; tempospatial variation; Atmospheric mercury

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Jen, Y. (2013). Tempospatical Distribution, Gas-solid Partition, and Long-range Transportation of Atmospheric Mercury at an Industrial City and Offshore Islands. (Doctoral Dissertation). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726113-142609

Chicago Manual of Style (16th Edition):

Jen, Yi-Hsiu. “Tempospatical Distribution, Gas-solid Partition, and Long-range Transportation of Atmospheric Mercury at an Industrial City and Offshore Islands.” 2013. Doctoral Dissertation, NSYSU. Accessed November 21, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726113-142609.

MLA Handbook (7th Edition):

Jen, Yi-Hsiu. “Tempospatical Distribution, Gas-solid Partition, and Long-range Transportation of Atmospheric Mercury at an Industrial City and Offshore Islands.” 2013. Web. 21 Nov 2019.

Vancouver:

Jen Y. Tempospatical Distribution, Gas-solid Partition, and Long-range Transportation of Atmospheric Mercury at an Industrial City and Offshore Islands. [Internet] [Doctoral dissertation]. NSYSU; 2013. [cited 2019 Nov 21]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726113-142609.

Council of Science Editors:

Jen Y. Tempospatical Distribution, Gas-solid Partition, and Long-range Transportation of Atmospheric Mercury at an Industrial City and Offshore Islands. [Doctoral Dissertation]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726113-142609


NSYSU

2. Tsai, Meng-yen. Spatiotemporal Variation and Clustered Transportation Routes of Atmospheric Speciated Mercury in the Intersection of Taiwan Strait and South China Sea.

Degree: Master, Environmental Engineering, 2016, NSYSU

Taiwan Strait and South China Sea are located at the downwind sites of East Asian Continent where air pollutants can be transported toward the target region. Particularly, South China Sea is the largest marginal sea in the world that influenced the ambient air quality and ecosystem of islands by inland pollution sources. This study investigated the variation of atmospheric mercury with clustered transportation routes in the intersectional region of Taiwan Strait and South China Sea. This study measured the seasonal variation of the concentrations of speciated atmospheric mercury, and further investigated their spatiotemporal distribution. The concentrations of total gaseous mercury (TGM), gaseous oxidized mercury (GOM), and particulate mercury (PHg) were sampled and analyzed at three sampling sites in the intersectional region of Taiwan Strait and South China Sea. A standard method for sampling and analyzing mercury in air (NIEA Method A304.10C) promulgated by National Institute of Environmental Analysis (NIEA), mostly adopted from USEPA Method IO-5. Moreover, this study applied NOAA-HYSPLIT simulation and Global Fire Map to figure out the transportation routes of polluted air mass by a backward trajectory, a fire spot map, and the correlation analysis of mercury concentration with meteorological parameters and criteria air pollutants. Furthermore, this study also analyzed and compared the concentrations of atmospheric mercury with several islands in East Asian. Field measurement results showed that the seasonal concentrations of GEM, GOM, and PHg were ordered as: spring> fall> winter> summer, spring> summer> fall> winter, and spring> winter> fall> summer, respectively. The average concentration of GEM, GOM and PHg were 2.57±0.67 ng m-3, 19.60±7.87 pg m-3 and 0.16±0.04 ng m-3, respectively. The highest GEM, GOM, and PHg concentrations were commonly observed at Penghu Islands. The results showed that TGM was the main mercury species in the gas-particulate partition, and atmospheric mercury apportioned as 92.54~96.17% TGM and 3.83~7.45% PHg. The emission of PHg came mainly from metropolitan areas and very few were emitted from either anthropogenic or mobile sources. Results obtained from backward trajectories, global fire maps, and meteorological data showed that air masses were mainly came from Pacific Ocean, northern China, and the eastern coast of China during the sampling periods, with the frequencies of 27.50%, 22.50%, and 13.75%, respectively, while the concentrations of GEM were 2.55±1.07 ng m-3, 2.79±0.75 ng m-3, and 3.16±0.79 ng m-3, respectively. Air masses were blown mainly from southeastern Asia and the Pacific Ocean during the sampling periods in summer, while the fire maps showed that there were no combustion emissions, thus the concentrations of atmospheric mercury in summer were much lower than those in other seasons. Air masses came mainly from northern China and the eastern coast of China during the sampling periods in fall and winter, from which large amounts of mercury emitted from industrial… Advisors/Committee Members: Wei-Hsiang Chen (chair), Chang-Tang Chang (chair), Chung-Shin Yuan (committee member), Chung-Hseun Hung (chair).

Subjects/Keywords: gas-particulate partition; clustered transportation routes; speciated atmospheric mercury; spatiotemporal distribution; Taiwan Strait and South China Sea

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Tsai, M. (2016). Spatiotemporal Variation and Clustered Transportation Routes of Atmospheric Speciated Mercury in the Intersection of Taiwan Strait and South China Sea. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722116-092058

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Tsai, Meng-yen. “Spatiotemporal Variation and Clustered Transportation Routes of Atmospheric Speciated Mercury in the Intersection of Taiwan Strait and South China Sea.” 2016. Thesis, NSYSU. Accessed November 21, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722116-092058.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Tsai, Meng-yen. “Spatiotemporal Variation and Clustered Transportation Routes of Atmospheric Speciated Mercury in the Intersection of Taiwan Strait and South China Sea.” 2016. Web. 21 Nov 2019.

Vancouver:

Tsai M. Spatiotemporal Variation and Clustered Transportation Routes of Atmospheric Speciated Mercury in the Intersection of Taiwan Strait and South China Sea. [Internet] [Thesis]. NSYSU; 2016. [cited 2019 Nov 21]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722116-092058.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tsai M. Spatiotemporal Variation and Clustered Transportation Routes of Atmospheric Speciated Mercury in the Intersection of Taiwan Strait and South China Sea. [Thesis]. NSYSU; 2016. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722116-092058

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.