Microplastic-mediated exposure of chemicals to fish and shellfish : modeling and prediction

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K12604
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Risk sciences of radiation and chemicals
• Research Institution: Tokyo University of Agriculture and Technology
• Principal Investigator: Takada Hideshige 東京農工大学, (連合)農学研究科(研究院), 教授 (70187970)
• Co-Investigator(Kenkyū-buntansha): 水川 薫子 東京農工大学, (連合)農学研究科(研究院), 助教 (50636868) ; 井上 広滋 東京大学, 大気海洋研究所, 教授 (60323630) ; 遠藤 智司 大阪市立大学, 都市研究プラザ, 特任准教授(テニュアトラック) (30748934)
• Research Collaborator: KAKUMURA Azusa
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: マイクロプラスチック / 二枚貝 / PCBs / 添加剤 / 曝露 / 滞留時間 / 飼育実験 / モデル化

Outline of Final Research Achievements

In mussels from Tokyo Bay, on average, 5 pieces of microplastics were detected in their digestive tract. Fragments were dominant over fibers. Polyethylene and ethylene-propylene co-polymers were dominant. MP with size range from 20 to 80 micrometer was majority. Incubation experiments indicate 4 days to 8 days of residence time of MP in the digestive tract. If concentrations of persistent organic pollutants (POPs) would reach to equilibrium, MP-mediated exposure of POPs would be negligible. On the other hand, concentrations of some chemicals such as additives with high hydrophobicity would be far beyond the equilibrium, MP-mediated exposure of the chemicals could be important.

Free Research Field

環境化学