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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/35324

Title: 大氣懸浮微粒中水溶性無機氮物種之相關性研究:以台灣北部地區為例
Correlations of the water-soluble inorganic nitrogen species in Atmospheric Suspended Particles: A case study of Northern Taiwan
Authors: 林世昌
Contributors: NTOU:Department of Marine Environmental Informatics
國立臺灣海洋大學:海洋環境資訊學系
Keywords: 水溶性無機氮物種;台灣北部
water-soluble inorganic nitrogen species;Northern Taiwan
Date: 2012
Issue Date: 2013-10-07T02:53:47Z
Abstract: 本研究之採樣站鄰近海岸位於台灣北部基隆市,於2008年9月至2010年8月期間,採集145個大氣微粒樣品進行水溶性無機氮物種之分析,並以氣團軌跡回推資料,探討所採集大氣懸浮微粒之來源。 研究結果顯示,總懸浮微粒平均濃度為0.102±0.063 mg m-3,銨鹽平均濃度為83.7 ±41.2 nmol m-3,硝酸鹽為104±54.5 nmol m-3,水溶性無機氮為188 ±87.2 nmol m-3。總懸浮微粒質量濃度及水溶性無機氮物種濃度由於大氣懸浮微粒之來源,有明顯之季節變化。 在特殊事件-沙塵暴時期,銨鹽平均濃度為105±97.7 nmol m-3、硝酸鹽平均濃度為131±48.4 nmol m-3、水溶性無機氮平均濃度為237 ±119nmol m-3,比非採樣時期之平均值高出許多。 在採樣來源區域上,大陸性來源時銨鹽、硝酸鹽及水溶性無機氮之濃度分別為95.4±126nmol m-3、131±130 nmol m-3及227± 232nmol m-3,均比區域性及海洋性來源時高。另外,在大陸性來源及海洋性來源時,水溶性無機氮以硝酸鹽為主,所佔比例分別為58%及56%,區域性來源時則是以銨鹽為主,所佔比例為54%。 在相關性分析及主成份分析上,沙塵暴與水溶性無機氮物種有著高相關性,而研究地區之水溶性無機氮物種濃度受大陸性來源影響最大,區域性來源次之,海洋性來原則是影響最小。
This study analyzed 145 aerosol samples collected from September 2008 to August 2010 at a coastal site at Keelung city, Northern Taiwan, for water-soluble nitrogen species. In addition, 4-d back trajectories of air masses arriving daily at the sampling site were calculated to determine the potential aerosol source regions. The results show that concentrations of total suspended particles (TSP), ammonium, nitrate and water-soulable inorganic nitrogen (WSIN) were respectively 0.102 ± 0.063 mg m-3, 83.7 ± 41.2 nmol m-3, 104 ± 54.5 nmol m-3 and 188 ± 87.2 nmol m-3. The measured atmospheric concentrations of TSP and water-soulable inorganic nitrogen species show clear seasonal variations and correspond to the source regions. During the dust storm period concentrations of ammonium, nitrate and WSIN are 0.105 ± 97.7 nmol m-3, 131 ± 48.4 nmol m-3 and 237 ± 119 nmol m-3 respectively, are higher than the non-dust-storm period and the sampling period. Concentrations of ammonium, nitrate and WSIN of aerosol from continent are 95.4 ± 126nmol m-3, 131 ± 130 nmol m-3 and 227 ± 232 nmol m-3 are higher than S.E region and sea. In addition, aeresol from continent and sea, nitrate provide 58% and 56% of WSIN, respectively; from S.E. region, ammonium provide 54% of WSIN. The results of correlations and factor analysis of water-soulable inorganic nitrogen speicies, dust storm and potential aerosol source regions indicate a strong correlation was found between dust storm and water-soulable inorganic nitrogen specie and aerosol from continent is the most important factor in terms of the distribution of water-soulable inorganic nitrogen species in study area.
URI: http://ethesys.lib.ntou.edu.tw/cdrfb3/record/#G004994E015
http://ntour.ntou.edu.tw/handle/987654321/35324
Appears in Collections:[海洋環境資訊系] 博碩士論文

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