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ID 43729
file
creator
Takeuchi, Shin-ya
Kojima, Keisuke
Komatsu, Toshiko
Fukushima, Takehiko
subject
atmospheric particulate matter
PAHs
sea sediment
toxicity
Vibrio fischeri
NDC
Chemistry
abstract
The concentration of polycyclic aromatic hydrocarbons (PAHs) and the toxicity to marine bacteria (Vibrio fischeri) were measured for the organic solvent extracts of sea sediments collected from an urban watershed area (Hiroshima Bay) of Japan and compared with the concentrations and toxicity of atmospheric particulate matters. Among atmospheric particulate matters, the PAHs concentration was highest in FPM collected during cold seasons. The concentrations of sea sediments were 0.01-0.001 times those of atmospheric particulate matters. 1/EC50 was 1-10 L g-1 PM for atmospheric particulate matters and 0.1-1 L g-1 dry solids for sea sediments. These results imply that toxic substances from atmospheric PM are diluted several tens or hundreds times in sea sediments. The ratio of the 1/EC50 to PAHs concentration ((1/EC50)/16PAHs) was stable for all sea sediments (0.1-1 L μg-1 16PAHs) and was the same in the order of the magnitude as that of FPM and CPM. The ratio of sediments collected from the west was more similar to that of CPM while that of the east was to FPM, possibly because of hydraulic differences among water bodies. The PAHs concentration pattern analyses (principal component analysis and isomer ratio analysis) were conducted and from the results. PAHs pattern of sea sediments was fairly different from that of FPM and CPM. Comparison to previously conducted PAHs analyses suggested that biomass burning residues comprised a major portion of these other sources.
description
This work was supported by Kurita Water and Environmental Foundation and Grant-in-Aid for Scientific Research (C)
journal title
Water Science & Technology
volume
Volume 66
issue
Issue 5
start page
983
end page
992
date of issued
2012-07
publisher
IWA Publishing
issn
0273-1223
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
rights
(c) IWA Publishing 2012. The definitive peer-reviewed and edited version of this article is published in Water Science & Technology Vol. 66, No. 5, pp.983–992, 2012. doi:10.2166/wst.2012.268 and is available at www.iwapublishing.com.
relation url
department
Graduate School of Engineering