Concentration Variation of Atmospheric Sulfate Observed at Sakai, Osaka from 1986 to 1995

DOI Web Site 3 Citations 21 References
  • ITO Norio
    Research Institute for Advanced Science and Technology, Osaka Prefecture University
  • MIZOHATA Akira
    Research Institute for Advanced Science and Technology, Osaka Prefecture University

Bibliographic Information

Other Title
  • 大阪における硫酸塩濃度の経年変化　－ 1986年から1995年の連続観測結果について －
  • オオサカ ニ オケル リュウサンエン ノウド ノ ケイネン ヘンカ 1986ネ

Search this article

Abstract

In this paper we describe the results of a long-term observation on the particulate sulfate in the atmosphere over Sakai, Osaka, Japan. Since 1986 an atmospheric particulate sample has been collected daily on the quartz fiber filter in the urban area of Sakai. After extracting ultrasonically water soluble materials from the obtained sample into deionized distilled water, concentrations of sulfate and so on were determined by applying ion chromatography method. Monthly mean concentrations of non-sea salt (nss-) and sea salt (ss-) sulfate for a period of ten years from January 1986 to December 1995 were estimated from the observed concentrations. Using the least squares method, we determined the coefficient values of the linear function expressing concentration variation of nss-sulfate for the period of ten years. Although the rate is considerably different with the month, the concentration of nss-sulfate for each month has an increasing tendency. Consequently the concentration of nss-sulfate was increasing annually at the rate of 0.22 ± 0.05 μg/m3, and its annual mean varied from 3.5 to 5.7 μg/m3 for these ten years. It can be considered that this cause is the remarkably increasing emission of sulfur dioxide in China.

Journal

  • Earozoru Kenkyu

    Earozoru Kenkyu 13 (4), 343-353, 1998

    Japan Association of Aerosol Science and Technology

Citations (3)*help

See more

References(21)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top