Microplastics and attached microorganisms in sediments of the Vitória bay estuarine system in SE Brazil

Neto, José Antônio Baptista; Gaylarde, Christine C.; Beech, Iwona B.; Bastos, Alex Cardoso; Quaresma, Valéria da Silva; Carvalho, Diego Gomes de

doi:10.1016/j.ocecoaman.2018.12.030

Cited by 105 publications

(32 citation statements)

References 54 publications

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“…The negative implications of microplastics have been reported by many researchers [20][21][22][23]. Microplastics are carriers of pathogenic microorganisms and develop biofilms on their surface [24].…”

Section: Discussionmentioning

confidence: 99%

Facemasks: A Looming Microplastic Crisis

Dissanayake

Torres-Quiroz

Mahato

et al. 2021

IJERPH

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Single-use disposable facemasks have been used as a preventive measure against the ongoing COVID-19 pandemic. However, many researchers have found evidence that these facemasks are being dumped into lakes, rivers, and open garbage dumps. Facemasks have the potential of releasing microplastic fibers into the environment; a phenomenon that has been poorly investigated. Moreover, microplastic fibers composed of plastics have the potential of affecting the flora and fauna of many ecosystems. In this preliminary study, we investigate how many microplastic fibers had been released to the water by KF-AD, KF94, surgical, and FFP1 standard facemasks, which are the most widely available facemask standards in South Korea. The waterbody in our research was mechanically agitated for 24, 48, and 72 h. Findings showed that most of the layers of facemasks are composed of polypropylene. The surgical and KF94 standard facemasks released the highest number of microplastic fibers. Furthermore, under our research conditions, a single facemask can release at least 47 microplastic fibers per day (e.g., KF-AD standard mask), which can lead to the release of at least 1381 million microplastic fibers per day in total in South Korea if 70% of the urban population uses a single mask every day. Moreover, the released microplastic fibers significantly increased when the agitation time extended from 24 to 48 h. This finding suggests that the number of released microplastic fibers is likely to increase drastically.

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Section: Discussionmentioning

confidence: 99%

Facemasks: A Looming Microplastic Crisis

Dissanayake

Torres-Quiroz

Mahato

et al. 2021

IJERPH

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“…Different kinds of grabs and corers are suggested to be suitable for deeper sediment sampling. Ekman and Van Veen grab samplers are deployed to study benthic sediment (Merga et al 2020;Neto et al 2019;Sruthy and Ramasamy 2017). Deep sediment sampler can provide a look at the changing abundance and microplastic debris in lake sediments that span a century to present day.…”

Section: Deep Sediment Samplersmentioning

confidence: 99%

Microplastic sampling techniques in freshwaters and sediments: a review

Razeghi

Hamidian

et al. 2021

Environ Chem Lett

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Pollution by microplastics is of increasing concern due to their ubiquitous presence in most biological and environmental media, their potential toxicity and their ability to carry other contaminants. Knowledge on microplastics in freshwaters is still in its infancy. Here we reviewed 150 investigations to identify the common methods and tools for sampling microplastics, waters and sediments in freshwater ecosystems. Manta trawls are the main sampling tool for microplastic separation from surface water, whereas shovel, trowel, spade, scoop and spatula are the most frequently used devices in microplastic studies of sediments. Van Veen grab is common for deep sediment sampling. There is a need to develop optimal methods for reducing identification time and effort and to detect smaller-sized plastic particles.

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“…On the other hand, the microplastics average concentration determined for the mangrove soil of the Ciénaga Grande de Santa Martha, Colombian Caribbean, was 2,745 ± 1,978 particles/kg (Garcés et al, 2019), an amount greater than the one found in this research. This research's results and the other results obtained, confirm that in subtidal areas of bays and estuaries and intertidal areas such as beaches, located near to urban cerca de entornos urbanos, se concentran en mayor cantidad los microplásticos (Baptista et al, 2019). La cuenca alta del río Dagua concentra una alta proporción de los centros poblados municipales, por lo que aporta la mayor cantidad de aguas domésticas y residuos sólidos de actividades residenciales y productivas al cauce principal del río; adicionalmente, la concentración de población en la cuenca baja ha generado el aumento de residuos sólidos dispuestos directamente en ríos y quebradas (Universidad del Valle, 2016;Aguirre et al, 2017).…”

Section: Discussionunclassified

“…Adicionalmente, las fibras, son el mayor aportante de los efluentes de lavadoras domésticas, ya que una sola prenda de ropa puede producir más de 1 900 fibras por lavado (Dodson et al, 2020). La relación entre la presencia de microplásticos y las aguas residuales puede explicar su mayor acumulación en la parte interna de la bahía, zona más cercana al centro urbano, el puerto y la environments, microplastics concentrate in greater amounts (Baptista et al, 2019). The upper basin of the Dagua River concentrates a high proportion of the populated municipal centers, so it contributes with the largest amount of domestic waters and solid waste from residential and productive activities into the main channel of the river; in addition, the population concentration in the lower basin has generated an increase of solid waste directly disposed into rivers and streams (Universidad del Valle, 2016;Aguirre et al, 2017).…”

Section: Ubicación / Locationunclassified

Spatial distribution and increase of microplastics over time in sediments of Buenaventura Bay, Colombian Pacific

Vásquez-Molano

Molina

Duque

2021

Bol. Investig. Mar. Costeras

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The increase in production, consumption and inadequate disposition of plastics has generated an accumulation of these elements in marine ecosystems, which have become important microplastics sinks (< 5 mm). The objective of this research was to determine the temporal and spatial differences in the density, distribution, and type of microplastics in the sediments of Buenaventura Bay. For this purpose, sediment samples were collected in the internal estuary (close to the rivers) and in the external estuary (with a greater marine influence). Samples were obtained in the dry, transition, and rainy season for the years 2015 and 2019. Microplastics were extracted by density separation method, each particle was classified and measured by optical microscopy. Density ranged from 11 to 1,354 particles/kg, with averages of 194.9 ± 51.3 and 359.6 ± 88.0 particles/kg for the years 2015 and 2019, respectively, reporting an increase of 84.4 %. The internal estuary presented a higher density in both years and the fibers constituted the most common form of microplastic particles, with 63.7 % for 2015 and 56.03 % for 2019. The presence and increasing accumulation of microplastics generates risks and adverse effects for the marine communities; additionally it coul compromise the food safety for coastal human populations.

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Microplastics and attached microorganisms in sediments of the Vitória bay estuarine system in SE Brazil

Cited by 105 publications

References 54 publications

Facemasks: A Looming Microplastic Crisis

Facemasks: A Looming Microplastic Crisis

Microplastic sampling techniques in freshwaters and sediments: a review

Spatial distribution and increase of microplastics over time in sediments of Buenaventura Bay, Colombian Pacific

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