Role of Sulfur as Dominant Element to Regulate Behavior of Metals in Freshwater Environment

2016 Fiscal Year Final Research Report

• Project/Area Number: 26340008
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: The University of Shiga Prefecture
• Principal Investigator: MARUO MASAHIRO 滋賀県立大学, 環境科学部, 教授 (80275156)
• Co-Investigator(Renkei-kenkyūsha): MITAMURA Osamu 滋賀大学, 教育学部, 特任教授 (50030458)
• Research Collaborator: SEIKE Yasushi 島根大学, 大学院・総合理工学研究科, 教授 ; SUGAHARA Shogo 島根大学, 大学院・総合理工学研究科, 助教 ; Md. Rasheduzzaman 滋賀県立大学, 大学院・環境科学研究科 ; OYAMA Waka 滋賀県立大学, 大学院・環境科学研究科 ; KAWAGUCHI Mai 滋賀県立大学, 環境科学部
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 淡水域 / 硫黄 / 錯生成 / スペシエーション / 配位子

Outline of Final Research Achievements

Existence of sulfur containing compounds as ligands for essential trace metals (Fe, Cu) was investigated. Existence of ligands which form highly stable complexes with copper was assured by pseudopolarography for all sampled waters including Lake Biwa (freshwater lake) and Lake Shinji (brackish lake). Determination of sulfur containing compounds in suspended fraction of the samples of Lake Biwa showed the concentration of cysteine in the order of some micromole per liter and that of glutathione in the order of some hundreds nanomole per liter. In the concentration of these two compounds in the samples of Lake Shinji, the order was reversed. From this result, detection of these compounds in dissolved fraction of lake water was expected.

Free Research Field

水圏化学