Morphological description of microplastic particles for environmental fate studies

Rosal, Roberto

doi:10.1016/j.marpolbul.2021.112716

Cited by 68 publications

(23 citation statements)

References 56 publications

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“…Images of all RPs are shown in Figure 2. As proposed before, particle shape strongly influences the behavior of plastic particles in fluid media [16]. It…”

Section: Particle Shapementioning

confidence: 79%

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Do We Speak the Same Language for Reference Particles in Microplastic Research?

Senfter

Walter

Dür³

et al. 2022

Microplastics

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Despite the high number of scientific publications on related topics, such as sustainability, pollution control, etc., research on microplastic (MP) is still in its infancy. To advance the quality of future MP investigations, scientists have recently called for harmonization regarding the definition and categorization of MP, as well as for consensus in sampling and investigations methodologies. The application of standardized and fully characterized MP particles, which are commercially available on a large scale but rarely characterized by manufacturers, could add another piece to that mosaic. This publication aims to introduce ten low-priced MP powders that can be used as reference particles in future MP studies. The physical parameters shape, particle density and particle size distribution were examined, and results compared to technical information reports and data sheets, available. Particle densities were almost in line with the manufacturer’s information. However, significant leaks could be revealed for particle size specifications, thus underlining the demand for an accurate description of the particle size distribution, e.g., D50 or D90.

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“…Images of all RPs are shown in Figure 2. As proposed before, particle shape strongly influences the behavior of plastic particles in fluid media [16]. It…”

Section: Particle Shapementioning

confidence: 79%

“…Images of all RPs are shown in Figure 2. As proposed before, particle shape strongly influences the behavior of plastic particles in fluid media [16]. It can have an effect on how particles are processed in the separation apparatus.…”

Section: Particle Shapementioning

confidence: 83%

Do We Speak the Same Language for Reference Particles in Microplastic Research?

Senfter

Walter

Dür³

et al. 2022

Microplastics

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“…Its interaction with environmental elements, accumulation, and association with other plastic and pollutive particles, given by its physical properties, define its effects on the ecosystem [ 77 ]. Microplastic particles have a variety of shapes, including spheres, fibers, fragments, and films, each related to their source and composition with a varying pollutive potential through their macroscopic and microscopic biological effects [ 78 ].…”

Section: Environmental Impact and Health Effects Of Synthetic Plastic...mentioning

confidence: 99%

Towards a Circular Economy of Plastics: An Evaluation of the Systematic Transition to a New Generation of Bioplastics

et al. 2022

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Plastics have become an essential part of the modern world thanks to their appealing physical and chemical properties as well as their low production cost. The most common type of polymers used for plastic account for 90% of the total production and are made from petroleum-based nonrenewable resources. Concerns over the sustainability of the current production model and the environmental implications of traditional plastics have fueled the demand for greener formulations and alternatives. In the last decade, new plastics manufactured from renewable sources and biological processes have emerged from research and have been established as a commercially viable solution with less adverse effects. Nevertheless, economic and legislative challenges for biobased plastics hinder their widespread implementation. This review summarizes the history of plastics over the last century, including the most relevant bioplastics and production methods, the environmental impact and mitigation of the adverse effects of conventional and emerging plastics, and the regulatory landscape that renewable and recyclable bioplastics face to reach a sustainable future.

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“…Dentro dessas categorias, ainda é possível identificar partículas com diferentes graus de irregularidades, provavelmente em decorrência do tempo em que a partícula está no ambiente e dos processos de degradação e abrasão a que elas foram submetidas (ROSAL, 2021).…”

Section: Controle De Qualidadeunclassified

“…Ainda, a etapa de separação por densidade poderia implicar em uma redução de exatidão do método. As taxas variáveis, à vista disso, ainda não há na literatura uma padronização para a classificação morfológica, o que dificulta a comparação entre os estudos(ROSAL, 2021). Para a harmonização dos dados, GESAMP (2019) recomenda a classificação das partículas em 5 A categorização das partículas é importante tanto para facilitar a etapa subsequente de identificação química, quanto para determinar as principais características dos MPs coletados.De acordo com Fahrenfeld et al ( 2019), aspectos como morfologia e cor dos MPs podem fornecer evidências acerca de sua origem no ambiente.…”

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Análise de microplásticos no Rio Tietê SP: Identificação, caracterização e quantificação de poluentes orgânicos adsorvidos

Moraes¹

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Microplastic (MP) is a class of compounds that includes different polymeric synthetic materials in the size range between 5mm and 1µm. These materials have already been found in all environmental matrices and have great polluting potential. In addition to presenting physical, chemical and biological risks to organisms at the base of the food chain, they compromise water quality. In Brazil, the occurrence, distribution, characterization and impacts of this new class of pollutants is still poorly studied, especially in freshwater. The main objective of this study was to investigate the occurrence of MPs at four points in the Tietê-SP river and to evaluate the presence and concentration of polychlorinated biphenyls (PCBs) sorbed to these particles and to macroplastics. The sampling points in the Tietê River include: Biritiba-Mirim (P1), Santana do Parnaíba (P2), Tietê (P3) and the Barra Bonita reservoir located in Anhembi, SP (P4). To determine the occurrence of MPs, about 200 liters of surface water were collected with an aluminum bucket and poured into a 0.106 and 5.6 mm granulometric sieves scheme. MPs were quantified and classified by color, size and morphology. The chemical identity of the polymers was determined by vibrational midinfrared spectroscopy with Fourier transform (FTIR). MPs concentrations ranged from 6.67 to 1530 particles m -3 , being higher in P2 and P3. For the analysis of sorbed PCBs, the MPs were collected through nets of plankton fixed at each sampling point, for 30 minutes or until clog. Macroplastics were collected in a similar way in P2 and P3, however, in P1 and P4, they were collected from the river banks. All extracts were analyzed by gas chromatography coupled with mass spectrometry. The parameters used for validation proved to be adequate for the proposed objective, being them linearity, sensitivity, precision, accuracy, robustness and limits of detection and quantification. The total concentrations of PCBs in MPs and macroplastics ranged from 20.53 to 133.12 ng g -1 and from 24.98 to 40.99 ng g -1 , respectively. We expect that the results found can elucidate the relationship between MPs and organic pollutants in freshwater and provide relevant information about the current scenario of MPs in the Tietê River and the possible chemical risks associated with the transport of PCBs through these particles.

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Morphological description of microplastic particles for environmental fate studies

Cited by 68 publications

References 56 publications

Do We Speak the Same Language for Reference Particles in Microplastic Research?

Do We Speak the Same Language for Reference Particles in Microplastic Research?

Towards a Circular Economy of Plastics: An Evaluation of the Systematic Transition to a New Generation of Bioplastics

Análise de microplásticos no Rio Tietê SP: Identificação, caracterização e quantificação de poluentes orgânicos adsorvidos

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