First Evidence of Microplastic Ingestion by Riverine Fish From the Freshwater of Northwest Peninsular Malaysia

作者：Siti Norabiatulaiffa Mohd Yamen, Mohd Saiful Samsudin, Azman Azid, Mohd Nurazzi Norizan, Aidee Putera Kamal Suradee, Muhammad Izzul Fahmi Mohd Rosli · 发表于：Environmental Toxicology and Chemistry · 年份：2024 · DOI：10.1002/etc.5971 · 被引用次数：3 · 研究领域：Microplastics and Plastic Pollution、Recycling and Waste Management Techniques、Nanoparticles: synthesis and applications

In a baseline study, we investigated microplastic contamination in fish from the Pinang and Kerian Rivers in Northwest Peninsular Malaysia. In recognition of the growing concern over microplastic pollution in aquatic environments, we aimed to assess the abundance and characteristics of microplastics ingested by various fish species. Fish samples were collected from local fishermen, followed by a digestion process using 10% potassium hydroxide (KOH). Microplastics were isolated and analyzed through visual examination and attenuated total reflectance Fourier transform infrared spectroscopy. The results revealed a high prevalence of microplastics, with Johnius borneensis and Oreochromis sp. exhibiting the highest abundance, averaging 48.6 and 42.8 microplastics/g, respectively. The predominant shapes were fibers (55.6%) and fragments (25.9%), with colors primarily transparent (48.19%) and black (30.12%). Our results indicate significant contamination levels in freshwater fish, emphasizing the need for further research and effective mitigation strategies. These findings provide crucial baseline data on microplastics in Malaysian freshwater ecosystems. Environ Toxicol Chem 2024;43:2189-2198. © 2024 SETAC.