Establishment of predict model of chronic metal toxicity and its applicability

2016 Fiscal Year Final Research Report

• Project/Area Number: 26340086
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental risk control and evaluation
• Research Institution: Toyama Prefectural University
• Principal Investigator: Kusui Takashi 富山県立大学, 工学部, 教授 (60153293)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 生態影響 / 重金属 / 甲殻類 / 藻類

Outline of Final Research Achievements

The effect of water quality on the chronic toxicity to crustacean and algae was studied and the model of this effect was established. The chronic toxicity of nickel to crustaceans was affected by hardness (calcium, magnesium) and pH. A model was constructed and the result of actual industrial effluents was predicted. EC 50 could be predicted with an error within 3 times, but EC 20 had a large error. Chronic toxicity of nickel to algae was also modified by hardness (magnesium) and pH in the same way as crustacean. Changes in the chemical form of Ni during exposure and the relationship between accumulated Ni in crustacean and algae and chronic effect were discussed.

Free Research Field

環境工学