The Effect of Sorption and Biodegradation of Humic Acids on Toxicity of Benzo[a]pyrene

• Project/Area Number: 24710014
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Environmental dynamic analysis
• Research Institution: Yamaguchi University (2013-2014); Minami Kyusyu University (2012)
• Principal Investigator: YANAGI Yukiko 山口大学, 農学部, 助教 (20412819)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2012: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
• Keywords: 腐植酸 / ベンゾ[a]ピレン / 急性毒性 / 収着 / 生分解 / 腐植物質 / 緑藻 / ベンゾピレン / 多環式芳香族炭化水素 / 生育阻害

Outline of Final Research Achievements

The effect of several soil humic acids on the sorption affinity and the acute toxicity to algae of benzo[a]pyrene (BaP) were examined. The sorption amount increased and the acute toxicity decreased with increasing concentration of the humic acids. It was suggested that the decreasing in the acute toxicity of BaP depended on the sorption of the BaP to humic acids. After the BaP adsorbing to the humic acid had been degraded by laccase, the acute toxicity of it was significantly lower value than that of BaP alone degraded by laccase. It was suggested that the BaP interacting with humic acid showed the different toxicity dynamics between BaP alone during biodegradation.

Research Products

• [Journal Article] Effect of humic acids on the acute toxicity of bento[a]pyrene to algae, Pseudokirchneriella subcapitata (2014)
  • Author(s): Y. Yanagi, Y. Okuyama, Y. Ochi, N. Fujitake, T. Kobayashi
  • Journal Title: Book of Abstracts, The 17th Meeting of the International Humid Substances Society Volume: 1 Pages: 214-215
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] ピレンの親和性に及ぼす腐植酸の化学構造特性の影響 (2014)
  • Author(s): 小林孝行，柳由貴子，隅田裕明
  • Organizer: 日本土壌肥料学会
  • Place of Presentation: 東京都小金井市，東京農工大学
  • Year and Date: 2014-09-09 – 2014-09-11
• [Presentation] Effect of humic acids on the acute toxicity of bento[a]pyrene to algae, Pseudokirchneriella subcapitata (2014)
  • Author(s): Y. Yanagi, Y. Okuyama, Y. Ochi, N. Fujitake, T. Kobayashi
  • Organizer: International Humic Substances Society
  • Place of Presentation: イオアニア，ギリシャ
  • Year and Date: 2014-09-01 – 2014-09-05
• [Presentation] ベンゾ[a]ピレンの生物毒性に対する腐植酸の影響ー緑藻に対する生育阻害軽減効果ー (2013)
  • Author(s): 柳由貴子，奥山裕佳，藤嶽暢英，小林孝行
  • Organizer: 日本腐植物質学会
  • Place of Presentation: 佐賀大学（佐賀市）
• [Presentation] 腐植酸寒天培地を用いいた有機汚染物質のバイオアッセイ
  • Author(s): 小林孝行，柳由貴子，藤嶽暢英，隅田裕明
  • Organizer: 日本土壌肥料学会
  • Place of Presentation: 名古屋大学（名古屋市）
• [Remarks] 土壌化学研究室/研究内容
  • URL: http://ds0n.cc.yamaguchi-u.ac.jp/~yyanagi/research.html