An Assessment of Source Contributions to Ambient Aerosols in Central Taiwan.
作者： Wan-Ching Chen , Chiu-Sen Wang , Chih-Chung Wei
DOI: 10.1080/10473289.1997.10464436
关键词:
摘要: Ambient aerosols were sampled at three selected sites in the coastal region of central Taiwan to obtain composition data for use receptor modeling. All samples analyzed 20 elements with an x-ray fluorescence spectrometer. The mass percentage sulfates particle was determined by ion chromatography, and percentages elemental carbon (EC) organic (OC) analyzer. Because sampling located within 25 km each other, average chemical compositions similar taken on same day. However, variation from day significantly influenced wind direction change local sources, such as burning agricultural wastes. abundant species coarse fraction (2.5-10 µm) Al (0.5-4.0 µg/m3), Cl (0.1-4.8 Ca (0.2-3.4 Fe (0.2-2.8 µg/ m3), K (0.1-1.4 while fine (<2.5 S (0.3-3.5 (0.01-1.9 (0.04-0.98 (0.01-10.5 (0-10.7 (1.2-15.7 µg/m3). Calculations source apportionment carried out using CMB7 software developed U.S. Environmental Protection Agency (EPA). main sources ambient found be marine aerosol, coal fuel oil combustion, wastes, paved road dust. diesel exhaust, sulfates. Source relatively sensitive types calculations sources. problem can ameliorated careful examination possible profiles.
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