“por un medio ambiente en equilibrio…”

Los microplásticos son pequeñas piezas de plástico que contaminan el medio ambiente.​ Aunque aún se debate a partir de qué tamaño puede considerárseles microplásticos, la Administración Nacional Oceánica y Atmosférica utiliza el parámetro de menos de 5 mm de diámetro para clasificarlos.​ Wikipedia

02/01/2021

Microplastics in sediments from rivers

Two classifications of microplastics currently exist. Primary microplastics are any plastic fragments or particles that are already 5.0 mm in size or less before entering the environment. These include microfibers from clothing, microbeads, and plastic pellets (also known as nurdles).[5][6][7] Secondary microplastics are microplastics that are created from the degradation of larger plastic products once they enter the environment through natural weathering processes. Such sources of secondary microplastics include water and soda bottles, fishing nets, and plastic bags.[7][8] Both types are recognized to persist in the environment at high levels, particularly in aquatic and marine ecosystems.[9] The term macroplastics is used to differentiate larger plastic waste, such as plastic bottles.

Microplastic samples

Additionally, plastics degrade slowly, often over hundreds if not thousands of years.[citation needed] This increases the probability of microplastics being ingested and incorporated into, and accumulated in, the bodies and tissues of many organisms. The toxic chemicals that come from both the ocean and runoff can also biomagnify up the food chain. [10][11] The entire cycle and movement of microplastics in the environment is not yet known, but research is currently underway to investigate this issue.

Microplastic fibers identified in the marine environment

Photodegraded plastic bag adjacent to hiking trail. Appx 2,000 pieces 1 to 25 mm. 3 months exposure outdoors.

0 comentarios

Otros artículos…

No se encontraron resultados

La página solicitada no pudo encontrarse. Trate de perfeccionar su búsqueda o utilice la navegación para localizar la entrada.