Distributions of polycyclic aromatic hydrocarbons and alkylated polycyclic aromatic hydrocarbons in Osaka Bay,Japan |
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| Authors: | Shizuho Miki Seiichi Uno Kazuki Ito Jiro Koyama Hiroyuki Tanaka |
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| Institution: | 1. Education and Research Center for Marine Resources and Environment, Fisheries, Kagoshima University, 50-20 Shimoarata 4-Chome, Kagoshima 890-0056, Japan;2. Laboratory of Marine Environmental Science, Division of Marine Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Hakozaki 6-10-1, Higashi-ku, Fukuoka 812-8581, Japan;3. Environment Conservation Division, National Research Institute of Fisheries and Environment of Inland Sea, Hiroshima 739-0452, Japan |
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| Abstract: | Contaminations in sediments by polycyclic aromatic hydrocarbons (PAHs) and alkylated PAHs were investigated at 44 sites in Osaka Bay, Japan. Concentrations of total PAHs and alkylated PAHs were in the range 6.40–7800 ng/g dry weights and 13.7–1700 ng/g dry weights, respectively. The PAH concentrations tended to be higher along the shoreline in the vicinities of big ports, industrialized areas, and densely populated regions such as the cities of Osaka and Kobe. The major sources appeared to be pyrogenic or both pyrogenic and petrogenic at most of the sites. PAH concentrations were remarkably high at a site near Kobe, where the concentrations of dibenzo(a,h)anthracene and benzo(g,h,i)perylene exceeded the effects-range-medium concentration and eight PAHs were above the corresponding effects-range-low concentrations. Those PAHs may have been derived from the great fire associated with the large earthquake in 1995. |
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| Keywords: | Alkylated polycyclic aromatic hydrocarbons Osaka Bay Polycyclic aromatic hydrocarbons Source recognition |
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