Chemical Characteristics of Atmospheric Aerosol Particles on a High Mountain and an Urban Area in Sapporo, Japan
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概要
- 論文の詳細を見る
To determine characteristics of the source of air pollution in relation to the pressure patterns as well as the difference in total amount of the atmospheric aerosol particles by wind direction classified four quadrants, samplings of aerosol particles at the top of MtTeine (1,024 m a.s.l.) and on the campus of Hokkaido University in Sapporo City, Hokkaido, Japan were carried out. They were performed under two pressure patterns of Bai-u front pressure ( June 30-July 5,1987 ) and Pacific Ocean high pressure (August 10-17,1987) in summer period. To accomplish them, the levels of Carbon, SO^<2->_4, NO^-_3, NH^+_4 and Cl^-, and metal element concentrations of Al, Na, Cu, Ni, K, Zn, Ca, Mn, Mg and Cd were measured. In the urban site, Hokkaido University, the total concentration showed relatively high values under westerly winds, and especially, the concentrations of marine aerosols and of soil particles were higher than those of anthropogenic aerosols. In addition to these analyses, the aerosol particles collected on millipore filter papers using a continuous aerosol sampler were analyzed by a scanning electron microscope (SEM) and an energy dispersive X-ray microanalyzer (EMAX) during January and August, 1987. Soil particles which were rich in Al, Si etc. showed the highest frequency (%) in the aerosol particles at both sites. The frequency of the element Na was higher under the winter monsoon pressure pattern characterized by northwesterly winds as compared with other pressure patterns in the urban site. Especially, the element Fe rich in studded tire metal particles from vehicles was outstanding at the end of March. The component of S based on a comparison between Si : Na : S ratios was relatively higher in the urban site as compared with the mountain site under a travelling high pressure pattern in which the highest particle concentrations were recorded in the winter period. The anthropogenic aerosol particles observed under a travelling high pressure pattern may have a remarkable influence on the air pollution in Sapporo City, Hokkaido, Japan.
- 北海道大学の論文
著者
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Lee Dong-in
Division Of Environmental Structure Graduate School Of Environmental Science Hokkaido University:(pr
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Kikuchi Katsuhiro
Department of Geophysics, Faculty of Science, Hokkaido University
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Taniguchi Takashi
Department of Geophysics, Faculty of Science, Hokkaido University
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Lee Dong-in
College Of Environmental And Marine Science And Technology Pukyong National University
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Taniguchi T
Hokkaido Univ. Sapporo Jpn
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Kikuchi K
Department Of Geophysics Faculty Of Science Hokkaido University
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Kikuchi Katsuhiro
Department Of Biological Environment Akita Prefectural University
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Taniguchi T
Kek Ibaraki‐ken Jpn
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Taniguchi Takashi
Department Of Geophysics Faculty Of Science Hokkaido University
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Taniguchi Takashi
Department Of Dermatology Faculty Of Medicine University Of Tokyo
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TANIGUCHI Takashi
Department of Computational Science and Engineering, Nagoya University
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Taniguchi Takashi
Department of Biology, Kyoto Pharmaceutical University
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