Seasonal Deposition Fluxes of Polycyclic Aromatic Hydrocarbons (PAHs) in Lake Biwa, Japan

• Tamamura, Shuji

• Sato, Tsutomu

• Ota, Yukie

• Aota, Yasuaki

• Kashiwaya, Kenji

• Kumagai, Michio

Abstract

金沢大学大学院自然科学研究科

金沢大学環日本海域環境研究センター地球環境計測研究部門

北海道大学大学院地球環境科学研究院

Seasonal deposition fluxes of polycyclic aromatic hydrocarbons (PAHs) in the North Basin of Lake Biwa were investigated by monthly collecting sediment trap samples through a year from July 2003. Average deposition flux of total PAHs was 75 ng cm-2 year-1, similar to those for other rural area. Deposition fluxes of PAHs did varied seasonally. In the vertical mixing period of the lake, late autumn to early spring, the fluxes of less volatile PAHs were enhanced while those for volatile PAHs were not. The size difference of particles associated with volatile and less volatile PAHs caused the seasonal variation of the fluxes. Oil discharge from water delivery equipments may contribute the fluxes of volatile PAHs in summer to autumn. © 2008 Springer Science+Business Media B.V.

Journal

• Water, Air, and Soil Pollution

  Water, Air, and Soil Pollution 198 (1-4), 297-306, 2009-03-01

  Springer Science+Business Media B.V.

Keywords

• Deposition flux
• Lake Biwa
• PAH
• Seasonal variation
• Sediment trap

Details

• CRID: 1050845760872641280
• NII Article ID: 120000997249
• NII Book ID: AA00886303
• ISSN: 00496979
• Web Site: http://hdl.handle.net/2297/12471
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • CiNii Articles
  • KAKEN