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NSYSU

1. Chuang, Hsueh-Lung. Spatiotemporal Variation, Chemical Fingerprint, and Source Identification of Atmospheric Fine Particles Long-range Transported toward the Intersectional Region of Taiwan Strait and South China Sea.

Degree: Master, Environmental Engineering, 2016, NSYSU

The deterioration of ambient air quality across the Taiwan strait, including Chinese haze, Asian duststorms and Indochina biomass burning, is highly correlated with industrial emissions, natural soil weathering and swidden agriculture. Under certain meteorological conditions, air pollutants could be blown to the downwind countries/regions and cause poor ambient air quality. Previous literature reported that the northern prevailing winds commonly blow the haze originated from northern China to central and southern China, Taiwan, and even Dongsha Islands. Therefore, the intersectional region of Taiwan Strait and South China Sea is an important air quality monitoring site for long-range transportation. This study selected two PM2.5 sampling sites (i.e. Penghu Islands and Dongsha Islands) located at the intersectional region of Taiwan Strait and South China Sea. Twenty-four hour sampling of PM2.5 was simultaneously collected at Penghu Islands and Dongsha Islands for continuous 14 days in four seasons from summer 2015 to spring 2016. PM2.5 samples were simultaneously collected with BGI-PQ200. After sampling, PM2.5 samples were carried back to the laboratory for conditioning, weighing, and chemical analysis. The chemical composition of PM2.5 including water-soluble ionic species, metallic elements, carbonaceous contents, and anhydrosugar. Moreover, the potential sources of PM2.5 and their contribution were further identified by principal component analysis (PCA) and chemical mass balance (CMB) receptor model. Field sampling results indicated that the spatial distribution of PM2.5 concentration increased from south to north. The lowest seasonal averaged PM2.5 concentrations were observed in summer at both Penghu Islands and Dongsha Islands. PM2.5 concentrations increased gradually since fall, which might be influenced by the northeastern monsoons since air masses could be transported from the north toward Penghu Islands and Dongsha Islands. Air masses blown from South China Sea in summer were much cleaner than those blown from the north in fall, winter, and spring. Chemical analysis results showed that the most abundant water-soluble ionic species of PM2.5 were secondary inorganic aerosols (SIAs) including SO42-, NO3-, and NH4+ which accounted for 50~70% of water-soluble ions (WSIs). The most abundant metallic elements of PM2.5 were crustal elements (Mg, K, Ca, Fe, and Al), while anthropogenic elements (V, Cr, Mn, Ni, As, Cd, and Pb) concentration increased since fall. Organic carbon (OC) was the main species in all seasons, and OC/EC ratios increased during the northeastern monsoon periods. The levoglucosan concentrations in summer and fall were commonly lower than those in winter and spring, showing that PM2.5 concentrations were highly influenced by biomass burning in winter and spring. Correlation analysis results obtained from paired t test showed that the p values of PM2.5 concentration and chemical composition were 0.001 and 0.004, respectively, between two subtropic islands, showing that they had high correlation.… Advisors/Committee Members: Ying-I Tsai (chair), Chung-Shin Yuan (committee member), Wei-Hsiang Chen (chair), Chung-Hsuan Hung (chair).

Subjects/Keywords: correlation analysis; Intersectional region of Taiwan Strait and South China Sea; marine fine particles; cross-boundary transport; chemical fingerprint; source identification

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APA (6th Edition):

Chuang, H. (2016). Spatiotemporal Variation, Chemical Fingerprint, and Source Identification of Atmospheric Fine Particles Long-range Transported toward the Intersectional Region 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-0723116-103737

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):

Chuang, Hsueh-Lung. “Spatiotemporal Variation, Chemical Fingerprint, and Source Identification of Atmospheric Fine Particles Long-range Transported toward the Intersectional Region of Taiwan Strait and South China Sea.” 2016. Thesis, NSYSU. Accessed July 09, 2020. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0723116-103737.

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

MLA Handbook (7th Edition):

Chuang, Hsueh-Lung. “Spatiotemporal Variation, Chemical Fingerprint, and Source Identification of Atmospheric Fine Particles Long-range Transported toward the Intersectional Region of Taiwan Strait and South China Sea.” 2016. Web. 09 Jul 2020.

Vancouver:

Chuang H. Spatiotemporal Variation, Chemical Fingerprint, and Source Identification of Atmospheric Fine Particles Long-range Transported toward the Intersectional Region of Taiwan Strait and South China Sea. [Internet] [Thesis]. NSYSU; 2016. [cited 2020 Jul 09]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0723116-103737.

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

Council of Science Editors:

Chuang H. Spatiotemporal Variation, Chemical Fingerprint, and Source Identification of Atmospheric Fine Particles Long-range Transported toward the Intersectional Region 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-0723116-103737

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

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