Elucidation and analysis of contamination of various hexavalent chromium in Japan

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K00517
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Tokyo University of Agriculture and Technology
• Principal Investigator: WATANABE Izumi 東京農工大学, (連合)農学研究科(研究院), 教授 (30302912)
• Co-Investigator(Renkei-kenkyūsha): OZAKI HIROKAZU 東京農工大学, 大学教育センター, 特任助教 (40396924)
• Research Collaborator: OHNO YUKO 東京農工大学, 大学院農学府 ; IKEDA MOMOE 東京農工大学, 大学院農学府 ; HARA YUTA 東京農工大学, 大学院農学府 ; GOMI AYANO 東京農工大学, 大学院農学府
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 重金属 / クロム / 六価クロム / 生態系汚染 / 土壌汚染

Outline of Final Research Achievements

Chrome is the third largest pollution in our country. The first and second are lead and arsenic, respectively. Therefore, this study clarified the actual condition of contamination, environmental dynamics, ecological effects of chromium and hexavalent chromium. Especially hexavalent chromium is extremely biotoxic, it is a serious pollutant which easily moves in the environment.
In a serious pollution site existing in Tokyo, it identified the source of pollution. In addition to various chemical parameters, we also used meteorological data to clarify the dynamics. As a result, we clarified long-term concentration fluctuation related to precipitation over the past two months. It was also revealed that hexavalent chromium is reduced to trivalent chromium of low toxicity during the movement of groundwater.

Free Research Field

環境化学