2011 Fiscal Year Final Research Report

Evaluation of the utility of canal with sediment characteristics and its toxicity potential

Research Project

Project/Area Number	22860018
Research Category	Grant-in-Aid for Research Activity Start-up
Allocation Type	Single-year Grants
Research Field	Civil and environmental engineering
Research Institution	The University of Tokyo
Principal Investigator	KOJIMA Keisuke 東京大学, 大学院・工学系研究科, 特任研究員 (60584399)
Project Period (FY)	2010 – 2011
Keywords	底質汚染 / 沈降粒子 / 堆積粒子 / 重金属 / 形態評価 / 逐次抽出法
Research Abstract	To comprehend the situations of sediment contaminations in Tokyo bay canal zoon, sediment survey were conducted at multiple point. Compare the sediment in canal zoon with bay sediment, sediment in canal zoon indicated higher values of ignition loss, Cu, Zn, Sb and Pb. This result suggested that sediment in canal zoon is more deteriorating. Regarding Cu and Zn, their speciations were different between sediment in canal zoon and bay sediment. Since speciation patterns in canal zoon were similar to those in combined sewer sediment, it was suggested that there are some contaminants from combined sewer overflow in canal zoon.