An Environmental Assessment of Coastal Sediments in Osaka Bay, Japan, by Organometal Analyses
スポンサーリンク
概要
- 論文の詳細を見る
The bottom environment of Osaka Bay was assessed by comparing organometal composition of sediments from inner part of the bay (along shore from Kobe City to Osaka City) with those in coasts along Awaji Island. The organometals designated in this study are those extracted by toluene-methanol mixed solvent. The result showed that human effects seem to be stronger in the inner bay than in the area along Awaji Island; the former shows higher concentrations of Mg, Cr, As, Ni, Se, Sn, Hg, Pb, Co, Cu and Zn. The main results obtained in this study are;<BR>1. The concentration of organomagnesium is apparently higher by 2-3 orders of magnitude in comparison with other organometals, suggesting the large contribution of chlorophyll contained in phytoplankton. The higher concentration of organomagnesium in sediments from the inner bay suggests that human-supplied nutrients may cause higher production of phytoplankton. The positive correlation of organomagnesium with organoarsenic and organolead suggests the possibility that arsenic and lead are also concentrated by phytoplankton.<BR>2. Sediments from the mouth of Shin-Yodo River are enriched in organic forms of Co, Cu, Hg, Ni, Zn, Sn, Se, and Pb and those from the mouth of Muko River are enriched in organic forms of Co, Cu, Zn, Sn, As, Se, and Pb. Those metals may orginate as pollutants from the river. However, all these organometals are not necessarily human-derived, because some may originate from other processes such as absorption of inorganic metals onto terrigenous highmolecular weight organic matter and from biological activity.
- 日本環境化学会の論文
日本環境化学会 | 論文
- 廃棄物埋立地浸出水および処理水中の無機成分、ジオキサン、フェノール類およびフタル酸エステル類の濃度
- 有機スズ代替船底防汚剤による広島湾北部海域の底質汚染状況
- 広島湾北部における有機スズ代替船底防汚剤による海域の汚染状況について
- 難燃処理済スチレンポリマー中のポリ臭素化ジフェニルエーテルの溶媒抽出及び熱脱着 GC/MS 分析
- プレカラム分離導入システムを用いたダイオキシン類の測定