東京湾流入河川におけるダイオキシン類の輸送量と発生源 Transportation and Sources of Dioxins and Dioxin-like PCBs in Rivers Flowing into Tokyo Bay

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著者

    • 小林 憲弘 KOBAYASHI Norihiro
    • 横浜国立大学大学院 環境情報研究院 Graduate School of Environment and Information Sciences, Yokohama National University
    • 益永 茂樹 MASUNAGA Shigeki
    • 横浜国立大学大学院 環境情報研究院 Graduate School of Environment and Information Sciences, Yokohama National University
    • 中西 準子 NAKANISHI Junko
    • 独立行政法人 産業技術総合研究所 化学物質リスク管理研究センター Research Center for Chemical Risk Management (CRM), National Institute of Advanced Industrial Science and Technology (AIST)

抄録

The amounts of dioxins (PCDD/Fs) and dioxin-like PCBs transported by rivers from various sources to Tokyo Bay were estimated. River water samples were collected at six stations in six different rivers (Edo River, Naka River, Ara River, Sumida River, Tama River and Tsurumi River) from April 2001 to July 2003, and the concentrations of PCDD/Fs and dioxin-like PCBs in these rivers were determined. On the basis of these results, the annual amounts of PCDD/Fs and dioxin-like PCBs transported by each river to Tokyo Bay were estimated. It was estimated that 10 g-TEQ (particulate phase) and 2.3 g-TEQ (dissolved phase) were transported to Tokyo Bay annually in recent years. Also, the contributions of sources of PCDD/Fs and dioxin-like PCBs in these rivers were estimated by a chemical mass balance (CMB) approach. In Tama and Tsurumi Rivers, it was estimated that more than 85% of total TEQ originated from combustion, while the contribution of combustion was less than 60% in the Ara River. Moreover, the amounts of PCDD/Fs and dioxin-like PCBs transported from each source were estimated, assuming that the contributions of sources in a river are constant in recent years. It was estimated that 8.4 g-TEQ, 1.1 g-TEQ, 0.45 g-TEQ, 1.2 g-TEQ originating from combustion, PCP, CNP and commercial PCBs, respectively, were transported to Tokyo Bay annually.

収録刊行物

  • 水環境学会誌 = Journal of Japan Society on Water Environment

    水環境学会誌 = Journal of Japan Society on Water Environment 27(7), 465-472, 2004-07-10

    公益社団法人 日本水環境学会

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各種コード

  • NII論文ID(NAID)
    10013275057
  • NII書誌ID(NCID)
    AN10372439
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09168958
  • NDL 記事登録ID
    7027789
  • NDL 雑誌分類
    ZN5(科学技術--建設工学・建設業--都市工学・衛生工学)
  • NDL 請求記号
    Z16-1045
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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