底質データベースとその統計解析  [in Japanese] Sediment Database and Its Statistical Analysis  [in Japanese]

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Abstract

The Database, namely “the Second Sediment Survey Database” in this paper is constructed as a continuation database of the sediment survey by the Japan Environment Agency, and the monitoring/surveying original data published by research centers and administrative organs in Japan are summarized in this database. Its period is eleven years from 1984 to 1994. It is able to refer to the data, which is in the first period for 14 years from 1970 to 1983, from the Second Database. The monitoring items are more than 225, and numbers of sediment samples in the second database are 9,594 in rivers, 713 in lakes and reservoirs, 7,199 in sea areas, respectively.<br>Monitoring condition, actual distribution, and trends of sediment pollution that data are modified in each prefecture and in time series for 25 years from 1970 to 1994, are discussed with the statistical analysis. Results are as follows: The mean concentrations of sediment for 25 years are 15.7mg·g<sup>-1</sup> as COD, 2.4<i>μ</i>g·g<sup>-1</sup> as Cd, 41.9<i>μ</i>g·g<sup>-1</sup> as Pb, 10.8<i>μ</i>g·g<sup>-1</sup> as As, 1.82<i>μ</i>g·g<sup>-1</sup> as total-Hg and 0.74<i>μ</i>g·g<sup>-1</sup> as PCB. The mean values in 1994 are 15.3mg·g<sup>-1</sup> as COD, 0.59<i>μ</i>g·g<sup>-1</sup> as Cd, 33.3<i>μ</i>g·g<sup>-1</sup> as Pb, 7.1<i>μ</i>g·g<sup>-1</sup> as As, 0.44<i>μ</i>g·g<sup>-1</sup> as total-Hg and 0.056<i>μ</i>g·g<sup>-1</sup> as PCB. Thus it is able to consider that the sediment concentration of COD is almost unchanged during in recent 25 years, and other items are gradually decreasing. In addition, the COD contaminant in sediment is noticed the dispersion phenomena of pollution as the remaining concentration in urban area, and as the increasing concentration in local area.

Journal

  • Journal of Japan Society on Water Environment

    Journal of Japan Society on Water Environment 24(11), 785-794, 2001-11-10

    Japan Society on Water Environment

References:  6

  • <no title>

    環境庁

    底質汚濁改善対策調査-底質データベース解析報告書-(昭和61年度環境庁委託業務結果報告書), 1987

    Cited by (1)

  • <no title>

    環境庁

    底質汚濁の現況及びその対策に関する調査-現況調査報告書-(平成8年度環境庁委託業務結果報告, 1996

    Cited by (1)

  • <no title>

    株式会社環境研究センター編

    底質データベースシステム取扱説明書, 1997

    Cited by (1)

  • <no title>

    国立公害研究所(現国立環境研究所)

    全国公共用水域水質測定地点地図, 1990

    Cited by (1)

  • <no title>

    環境庁環境保健部

    化学物質と環境(昭和60年版〜平成6年版), 1994

    Cited by (1)

  • 底質データベースと底質汚染の評価

    瀧和夫

    水環境学会誌 16, 85-90, 1993

    Cited by (3)

Cited by:  2

Codes

  • NII Article ID (NAID)
    10008006103
  • NII NACSIS-CAT ID (NCID)
    AN10372439
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    09168958
  • NDL Article ID
    5975898
  • NDL Source Classification
    ZN5(科学技術--建設工学・建設業--都市工学・衛生工学)
  • NDL Call No.
    Z16-1045
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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