2011 Fiscal Year Final Research Report
Study on the behavior of polycyclic aromatic hydrocarbons(PAHs) in the sediment of a tidal flat after a fire breaking out nearby
Project/Area Number |
23850014
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Research Category |
Grant-in-Aid for Research Activity Start-up
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Allocation Type | Single-year Grants |
Research Field |
Environmental chemistry
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Research Institution | Toho University |
Principal Investigator |
ONOZATO Mayu 東邦大学, 理学部, 博士研究員 (50610094)
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Project Period (FY) |
2011
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Keywords | 環境分析 / 多環芳香族炭化水素 / 干潟 / 環形動物 / 底質 |
Research Abstract |
To research the environmental contamination of a tidal flat, caused by a fire in a neighboring refinery on March 11, 2011, we measured the concentration of eight polycyclic aromatic hydrocarbons(PAHs) including benzo [a] pyrene in the sediment of the tidal flat and investigated the change in the PAH concentrations with the lapse of time. After a month from the fire, we collected for the sediment and measured the PAH concentrations, which ranged from 1.7 to 28.4 ug/kg-dry. The concentrations were about 3 times as high as those before the outbreak of the fire. After one year from the accident, we repeated the sampling and measurement : the concentrations ranged from 1.0 to 5.1 ug/kg-dry. Therefore it was confirmed that the PAH concentrations in the tidal flat increased once, but then gradually decreased down to a level similar to that before the fire over about a year.
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Research Products
(3 results)