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長崎県千々石湾の底質に含まれる有機物


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Title: 長崎県千々石湾の底質に含まれる有機物
Other Titles: Organic Matter in the Sediments in the Chijiwa Bay, Nagasaki Prefecture, Northwestern Kyushu, Japan
Authors: 近藤, 寛
Authors (alternative): Kondo, Hiroshi
Issue Date: 28-Feb-1987
Publisher: 長崎大学教育学部
Citation: 長崎大学教育学部自然科学研究報告. vol.38, p.23-36; 1987
Abstract: The present study is based on 45 sediment samples collected in the Chijiwa bay, Nagasaki prefecture. The samples were analyzed for grain size distribution, loss on ignition (550℃, 1 hr.), elementary composition, sulfid-S and humic acid. The central part of the bay, water depths about 29-41 meter is covered with clayey silt. Sandy sediments occure near the present coast line in water depths about 16-34 meter. The clayey silt of the central bay smell slightly of H2S, suggesting that the fine sediments might be anoxic. The loss on ignition range from 1.98% to 14.16% and the mean value is 11.38%. The ratio of loss on ignition/organic carbon is about 5. The C/N ratio range from 6.67 to 11.48 and the mean value is 8.17. The C/N ratio is slightly higher in the sandy sediments. Organic carbon, total hidrogen, total nitrogen may be correlated with the mud contend and clay content. There is a good correlation between the sulfid-S and organic carbon, between the humic acid and orgacin carbon. The humic acid has a absorption band near 405mμ.
URI: http://hdl.handle.net/10069/32490
ISSN: 0386443X
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:No. 38

Citable URI : http://hdl.handle.net/10069/32490

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