書誌事項
- タイトル別名
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- Environmental Behavior of Perfluorinated Surfactants in Tokyo Bay
- トウキョウワン ニ オケル フッソケイ カイメン カッセイザイ ノ カンキョウ キョドウ
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抄録
The perfluorinated surfactants, perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) have been reported to be present in the environment. Their behaviors in the environmental, however, are still unknown. In this study, we measured their concentrations in seawater and sediment from Tokyo Bay and in the waters of six major rivers that run into the bay. Then, their mass balances and behaviors in the bay were estimated. PFOS and PFOA existed mainly in the dissolved phase in water. The estimated annual input of PFOS from the rivers was 74 ∼ 346 kg · year-1, which was similar to the total amount of PFOS outflow to the ocean (20 ∼ 350 kg · year-1) and the amount of PFOS sedimentation to the bottom of the bay (1.3 kg · year-1). On the other hand, the estimated annual input of PFOA from the rivers was 29 ∼ 148 kg · year-1, which was much smaller than the total amount of PFOA outflow to the ocean (140 ∼ 1900 kg · year-1). The amount of PFOA sedimentation was estimated to be negligible. These results suggest that the major source of PFOS in the bay is riverine transport. The results also indicate the existence of unknown PFOA sources around the coast of the bay and/or the possibility of a significant PFOA atmospheric deposition to the bay. The sediment was not a significant sink for the two compounds. Their environmental behaviors, therefore, are quite different from those of persistent organochlorine compounds.
収録刊行物
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- 水環境学会誌
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水環境学会誌 29 (4), 221-228, 2006
公益社団法人 日本水環境学会
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詳細情報 詳細情報について
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- CRID
- 1390282680059265920
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- NII論文ID
- 10018109944
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- NII書誌ID
- AN10372439
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- COI
- 1:CAS:528:DC%2BD28XmtlKltb4%3D
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- ISSN
- 18813690
- 09168958
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- NDL書誌ID
- 7923642
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- 抄録ライセンスフラグ
- 使用不可