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Título del libro: Meso And Microplastic Risk Assessment In Marine Environments: New Threats And Challenges
Título del capítulo: Meso- and microplastics in marine environments: An overview

Autores UNAM:
PRIYADARSI DEBAJYOTI ROY;
Autores externos:

Idioma:

Año de publicación:
2024
Palabras clave:

Biological impact; Ecological impact; Ecosystem; Marine debris; Plastic pollution; Sustainable development goals


Resumen:

Global plastic production has increased from 1.5 million tonnes in 1950 to 311 million tonnes in 2014. Because of the increasing production of synthetic polymers and their low biodegradability, plastic pollution has become a serious environmental problem. It has been estimated that every year 4.8?12.7 million tonnes of plastic debris enter the marine environment, and this amount will likely increase by an order of magnitude before 2025. Microplastics have several definitions; for example, they have been defined as barely visible particles that pass through a 500 µm sieve but are retained by a 67 µm sieve and classified as particles smaller than 1 mm. Nowadays, it is widely accepted that microplastics are plastic items smaller than 5 mm. Microplastics can enter the marine environment as primary or secondary pollution. Primary microplastics are polymers manufactured at micro scale, e.g., components for cosmetics or medicine or raw materials used in plastic production. Secondary microplastics are products resulting from the physical (mechanical) and photochemical degradation of larger plastic fragments. © 2024 by Elsevier Inc. All rights reserved, including those for text and data mining, AI training, and similar technologies.


Entidades citadas de la UNAM: