Mechanical formation of micro- and nano-plastic materials for environmental studies in agricultural ecosystems

The Science of the Total Environment
A F AstnerT M Young

Abstract

Release of microplastics (MPs) and nanoplastics (NPs) into agricultural fields is of great concern due to their reported ecotoxicity to organisms that provide beneficial service to the soil such as earthworms, and the potential ability of MPs and NPs to enter the food chain. Most fundamental studies of the fate and transport of plastic particulates in terrestrial environments employ idealized MP materials as models, such as monodisperse polystyrene spheres. In contrast, plastics that reside in agricultural soils consist of polydisperse fragments resulting from degraded films employed in agriculture. There exists a need for more representative materials in fundamental studies of the fate, transport, and ecotoxicity of MPs and NPs in soil ecosystems. The objective of this study was therefore to develop a procedure to produce MPs and NPs from agricultural plastics (a mulch film prepared biodegradable polymer polybutyrate adipate-co-terephthalate (PBAT) and low-density PE [LDPE]), and to characterize the resultant materials. Soaking of PBAT films under cryogenic conditions promoted embrittlement, similar to what occurs through environmental weathering. LDPE and cryogenically-treated PBAT underwent mechanical milling followed by sie...Continue Reading

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Citations

Mar 16, 2021·Analytical Methods : Advancing Methods and Applications·Fazel Abdolahpur MonikhWillie J G M Peijnenburg
Mar 21, 2021·Environmental Pollution·Vadim V AnnenkovViktor A Pal'shin
Mar 27, 2021·The Science of the Total Environment·Ling YangChenxi Wu
Apr 13, 2021·Environmental Science & Technology·Liuwei WangDeyi Hou
Jul 11, 2021·Journal of Environmental Quality·Raza UllahAyalew Ligaba-Osena

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