Host: Abstracts of Annual Meeting of the Geochemical Society of Japan
Name : Abstracts of Annual Meeting of the Geochemical Society of Japan
Number : 72
Date : September 07, 2025 - September 19, 2025
Pages 28-
The ingestion of microplastics(MPs) by various aquatic organisms -ranging from zooplankton to marine mammals across trophic levels-has been widely reported. Among fish species, filter-feeding fish are particularly noteworthy, as they capture phytoplankton and suspended particles in the water through the movement of cilia or bristles, thus posing a risk of simultaneously ingesting MPs.Among MPs, tire and road wear particles (TRWP) are especially notable, with an estimated annual global emission of approximately 6 million tons. It has been suggested that ingestion on TRWPs themselves or their leachates may exert toxic effects on certain aquatic organisms. These TRWPs are believed to primarily enter rivers-and eventually oceans-via urban drainage systems, particularly during rainfall events. However, the actual status of TRWPs in environmental waters remains largely unknown.Therefore, this study was conducted with the aim of elucidating the types and abundance of TRWPs present in aquatic environments.
