環境科学者がマイクロプラスチック汚染における塗料の役割を指摘(U of T environmental scientists highlight role of paint in microplastic pollution)

ad

2025-03-04 トロント大学(U of T)

トロント大学の環境科学者たちは、塗料がマイクロプラスチック汚染の主要な発生源であることを明らかにしました。彼らの研究によれば、塗料の剥離や劣化によって微細なプラスチック粒子が環境中に放出され、これが生態系や人間の健康に悪影響を及ぼす可能性があります。特に、海洋環境ではこれらの粒子が魚類やその他の海洋生物に取り込まれ、食物連鎖を通じて人間にも影響を及ぼすリスクが指摘されています。研究者たちは、塗料の製造や使用における規制強化と、環境への放出を最小限に抑えるための新しい技術の開発が必要であると強調しています。

<関連情報>

塗料:マイクロプラスチックのパズルの、どこにでもあるのに無視されている部分 Paint: a ubiquitous yet disregarded piece of the microplastics puzzle

Zoie T Diana, Yuying Chen, Chelsea M Rochman
Environmental Toxicology and Chemistry  Published:06 January 2025
DOI:https://doi.org/10.1093/etojnl/vgae034

環境科学者がマイクロプラスチック汚染における塗料の役割を指摘(U of T environmental scientists highlight role of paint in microplastic pollution)

Abstract

Microplastics are widespread pollutants. Microplastics generated from the wear and tear of paints and coatings have recently been modeled to be a large source of microplastics to the environment. Yet, studies focused on microplastics broadly frequently overlook paint microplastics. In this article, we systematically reviewed the primary literature (turning up 53 relevant articles) on paint microplastic sources, identification methods, environmental concentrations, and toxicity to model organisms. Examples of sources of paint microplastics include paints from buildings and murals, crafts and hobbies, cars and roads, marine boats and structures, and industrial systems like pipes, sewers, and other infrastructure. Paint microplastics have been quantified in several marine samples from Europe and, to a lesser extent, East Asia. Reported concentrations of paint microplastics are up to 290,000 particles per kilogram of sediments, with the greatest concentration reported near a graffiti wall. Out of the toxicity studies testing paint microplastics, there have been 68 tested effects in total across all endpoints and organisms and 17 quantified lethal concentration 50% doses (ranging from 0.001 to 20 g/L). Of the tested effects, 45 observed endpoint values in the paint treatment were significantly different from the control (66%)—most of which were tests using antifouling paints. Overall, the number of studies on paint microplastics is small, limiting a holistic understanding of microplastics. Based on our synthesis of the state of the science on paint microplastics, we suggest a research agenda moving forward informed by research gaps.

1900環境一般
ad
ad
Follow
ad
タイトルとURLをコピーしました