Identification of microplastics in wastewater samples by means of polarized light optical microscopy

Sierra, Ignacio; Chialanza, Mauricio Rodríguez; Faccio, Ricardo; Carrizo, Daniel; Fornaro, L.; Pérez-Parada, Andrés

doi:10.1007/s11356-019-07011-y

Cited by 80 publications

(26 citation statements)

References 53 publications

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“…Polarized light allows us to identify polymers such as polyethylene, polypropylene and polyethylene terephthalate, because they are anisotropic materials. These materials appear bright while other materials appear completely dark [46]. In the case of particles that were not optically active under polarized light, the 'hot needle' technique was also used to evaluate their response [46,47].…”

Section: Plastics Consumptionmentioning

confidence: 99%

“…These materials appear bright while other materials appear completely dark [46]. In the case of particles that were not optically active under polarized light, the 'hot needle' technique was also used to evaluate their response [46,47]. Once confirmed asa plastic item, the particles were classified into fibers or fragments, and were also measured based on their maximum length and separated according to their size and color.…”

Section: Plastics Consumptionmentioning

confidence: 99%

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Incidence of Watershed Land Use on the Consumption of Meso and Microplastics by Fish Communities in Uruguayan Lowland Streams

Vidal

Lozoya²,

Tesitore

et al. 2021

Water

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Physical-chemical and biologicaldiversity of streams are influenced by the land use in their watersheds. Plastics currently make up the most important waste asset, representing an important part of the transported and accumulated material in water courses. This work analyzes the consumption of plastics debris by the fish communities in streams with two contrasting types of land use. We worked with threestreams impacted by urbanization and threeby extensive ranching. The stomach and intestinal contents of 309 individuals of 29 species were analyzed, by a modified alkaline digestion, and observed under a stereo microscope with polarized light. A total of 373 plastic itemswere found, of which the majority corresponded to fibers (318). A significant difference was found between the percentage of individuals that consumed plastic debrisbetween both systems (51.6% in ranchers and 76.6% in urban, p = 0.014 Mood’s Median), but no difference was found in the average ingested per individual. This study establishes the first baseline on plastic debris consumption by fish in Uruguayan streams, showing the extent of the plastic and microplastic pollution problem. Although there are differences between the analyzed sites, we also observed significant contamination in streams far from urbanization.

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Section: Plastics Consumptionmentioning

confidence: 99%

Section: Plastics Consumptionmentioning

confidence: 99%

Incidence of Watershed Land Use on the Consumption of Meso and Microplastics by Fish Communities in Uruguayan Lowland Streams

Vidal

Lozoya²,

Tesitore

et al. 2021

Water

View full text Add to dashboard Cite

show abstract

“…As a result, polarized light passes through the plastics, while the crystallinity of plastic influences this passing light and is used to detect microplastic. However, PLM cannot detect opaque and thick MPs (Sierra et al 2020). Thus, a further review could be carried out to confirm the standard distribution of the size and color of MPs to minimize the process error of PLM.…”

Section: Methods Of Detectionmentioning

confidence: 99%

Detection and removal of microplastics in wastewater: evolution and impact

Dey

Uddin

Jamal

2021

Environ Sci Pollut Res

157

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The pervasiveness of microplastics in aquatic ecosystems has become a major environmental issue in recent years. The gradual dumping of plastic wastes, inadequate standard detection methods with specific removal techniques, and slow disposal rate of microplastics make it ubiquitous in the environment. Evidence shows that microplastics act as a potential vector by adsorbing different heavy metals, pathogens, and other chemical additives widely used in different raw plastic production. Microplastics are ingested by aquatic creatures such as fish and different crustaceans, and finally, people ingest them at the tertiary level of the food chain. This phenomenon is responsible for blocking the digestion tracts, disturbing the digestive behavior, finally decreasing the reproductive growth of entire living organisms. Because of these consequences, microplastics have become an increasing concern as a newly emerging potential threat, and therefore, the control of microplastics in aquatic media is required. This paper provides a critical analysis of existing and newly developed methods for detecting and separating microplastics from discharged wastewater, which are the ultimate challenges in the microplastic treatment systems. A critical study on the effect of microplastics on aquatic organisms and human health is also discussed. Thus, this analysis provides a complete understanding of entire strategies for detecting and removing microplastics and their associated issues to ensure a waste discharge standard to minimize the ultimate potential impact in aquatic environments.

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“…A USB endoscope camera was used to observe the beam path for the confirmation of spectra corresponding to only individual particles which were passing through the laser beam. The flashes of elastically scattered light were used to determine the number of particles within the path of the beam for each spectrum during the integration time [12][13][14]. The complete spectral range of the spectrometer was continuously recorded.…”

Section: Microplastics Detection In Streamingmentioning

confidence: 99%

Methods for the Detection and Quantification of Micro and Nanoplastics- A Review

Priyanka¹,

Pallavi²,

Swathi³

et al. 2021

AJB2T

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Over the past 35 years, synthetic or semi-synthetic polymers called “plastics” have been widely used across multiple fields due to their low cost, versatility, durability. Plastics have proved to be a boon to mankind. However, overuse of non- biodegradable plastics comes with its own downsides. Despite constant efforts to reuse and recycle plastics, these polymers substantially contribute towards the accumulation of debris hazardous to the environment. Plastic materials are slowly broken into fragments of micro- and nano plastics due to aging and weathering. Micro- and nano plastics were found capable of entering the food chain and hence are viewed as threats. This review paper revolves around methods used for the detection and quantification of micro- and nano plastics. Detection of micro- and nano plastics using methods like Raman spectroscopy, Infrared Spectroscopy, SERS, MALDI-TOF, and machine learning approaches are discussed here. The research efforts carried out in this article aims to further facilitate the R&D initiatives of Jozbiz Technologies.

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Identification of microplastics in wastewater samples by means of polarized light optical microscopy

Cited by 80 publications

References 53 publications

Incidence of Watershed Land Use on the Consumption of Meso and Microplastics by Fish Communities in Uruguayan Lowland Streams

Incidence of Watershed Land Use on the Consumption of Meso and Microplastics by Fish Communities in Uruguayan Lowland Streams

Detection and removal of microplastics in wastewater: evolution and impact

Methods for the Detection and Quantification of Micro and Nanoplastics- A Review

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