An overview of nanoplastics present in the environment
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2018
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WORKSHOP ON ENVIRONMENTAL NANOTECHNOLOGY, 3rd
Resumo
Plastic pollution is an internationally recognized problem and an understanding of the behavior of plastic
particles in the environment is still under development [1]. In the environment, plastics degrade into
microplastics, i.e. fragments and fibers, then fragmented to nanoplastics (NPs) eventually. These microplastic
particles range between 1 mm to 5 mm [2], while the definition of NPs is still under debate; different studies
have set the upper size limit from 1 nm to 1 mm [3]. Daily discharges of microplastics are estimated in the range
of 50,000 up to 15 million particles, whereas no information on NPs discharges is available yet [4]. The present
overview highlights the importance of NPs as a contributor to environmental pollution, which are considered
emerging pollutants nowadays. NPs are homo- and/or heteroaggregates conformed with colloidal behavior [3].
The presence of these particles has been evidenced in the atmosphere [5], soil and marine environment, that
represents an ultimate sink for contamination [6]. According to the International Standard Organization (ISO),
a manufactured nanomaterial is intentionally produced for commercial purposes to have specific properties or
specific composition, therefore, the NPs cannot be considered as such [3]. Moreover, release and impact on the
environment of these particles is still not evident. Though several studies with engineered plastic nanomaterials
showed toxicity and sub-lethal effects with consequences not only at organism and population level but on the
overall ecosystem [6], are not representatives results [8]. However, current difficulties in sampling, identifying
and characterizating nano-sized debris make it hard to assess their occurrence in the environment. Thus, NPs
is a recent issue in the scientific community and deserves further attention to establish new remediation
technologies.
Como referenciar
GIMILIANI, G.T. An overview of nanoplastics present in the environment: a new group of nanomaterials?. In: WORKSHOP ON ENVIRONMENTAL NANOTECHNOLOGY, 3rd, October 5-8, 2018, Sorocaba, SP. Abstract... p. 47-47. Disponível em: http://repositorio.ipen.br/handle/123456789/30126. Acesso em: 29 Mar 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.