Nanoplastics in aquatic systems - are they more hazardous than microplastics?

Gaylarde, Christine C.; Neto, José Antônio Baptista; Fonseca, Estefan Monteiro da

doi:10.1016/j.envpol.2020.115950

Cited by 160 publications

(72 citation statements)

References 110 publications

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“…There are several mechanisms by which NPs can bind to metals: i) direct adsorption of cation complexes onto charged sites or neutral regions of the surface of the particulate plastic, ii) adsorption onto hydrous oxides, or iii) co-precipitation [21]. In this sense, particle size played an important role in metal adsorption: larger particles presented lower values of bound metals [56], which made NPs particularly good contaminant vectors because of their high surface-volume ratio [57]. This was consistent with our results since PS-Plain, which showed the highest aggregation, reached sizes >500 nm and had no effect on MeHg toxicity compared to functionalized NPs that stayed nanosized.…”

Section: The Presence Of Nanoplastics Increases the Toxicity Of Metalsmentioning

confidence: 99%

Functionalized Nanoplastics (NPs) Increase the Toxicity of Metals in Fish Cell Lines

González-Fernández

Baños

Esteban

2021

IJMS

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Nanoplastics (NPs) are one of the most abundant environment-threatening nanomaterials on the market. The objective of this study was to determine in vitro if functionalized NPs are cytotoxic by themselves or increase the toxicity of metals. For that, we used 50 nm polystyrene nanoparticles with distinct surface functionalization (pristine, PS-Plain; carboxylic, PS-COOH; and amino PS-NH2) alone or combined with the metals arsenic (As) and methylmercury (MeHg), which possess an environmental risk to marine life. As test model, we chose a brain-derived cell line (SaB-1) from gilthead seabream (Sparus aurata), one of the most commercial fish species in the Mediterranean. First, only the PS-NH2 NPs were toxic to SaB-1 cells. NPs seem to be internalized into the cells but they showed little alteration in the transcription of genes related to oxidative stress (nrf2, cat, gr, gsta), cellular protection against metals (mta) or apoptosis (bcl2, bax). However, NPs, mainly PS-COOH and PS-NH2, significantly increased the toxicity of both metals. Since the coexistence of NPs and other pollutants in the aquatic environment is inevitable, our results reveal that the combined effect of NPs with the rest of pollutants deserves more attention.

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Section: The Presence Of Nanoplastics Increases the Toxicity Of Metalsmentioning

confidence: 99%

Functionalized Nanoplastics (NPs) Increase the Toxicity of Metals in Fish Cell Lines

González-Fernández

Baños

Esteban

2021

IJMS

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“…Nanoparticles are grouped into two classes, namely, engineered nanoparticles, which are made for specific purposes, and secondary nanoparticles, which are produced by the abrasion of plastic contaminants [ 157 ]. With advances in technology, engineered nanoparticles are used in various industries, including the medical, health, and electronics fields.…”

Section: Exposure On Emerging Environmental Pollutantmentioning

confidence: 99%

Metabolomic Studies for the Evaluation of Toxicity Induced by Environmental Toxicants on Model Organisms

Kim

Kang

2021

Metabolites

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Environmental pollution causes significant toxicity to ecosystems. Thus, acquiring a deeper understanding of the concentration of environmental pollutants in ecosystems and, clarifying their potential toxicities is of great significance. Environmental metabolomics is a powerful technique in investigating the effects of pollutants on living organisms in the environment. In this review, we cover the different aspects of the environmental metabolomics approach, which allows the acquisition of reliable data. A step-by-step procedure from sample preparation to data interpretation is also discussed. Additionally, other factors, including model organisms and various types of emerging environmental toxicants are discussed. Moreover, we cover the considerations for successful environmental metabolomics as well as the identification of toxic effects based on data interpretation in combination with phenotype assays. Finally, the effects induced by various types of environmental toxicants in model organisms based on the application of environmental metabolomics are also discussed.

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“…The floating plastics in our seas are dominated by microfibres (Green et al, 2018;Mishra et al, 2019;Xu et al, 2021a), which are defined as fibers that are 1 μm-5 mm in length, with a length to diameter ratio greater than 100 (Liu et al, 2019a, b). Such microfibres have a huge surface area:volume ratio, which increases their adverse environmental effects considerably (see later in this review, and Gaylarde et al, 2021;Liu et al, 2021;Rebelein et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Sub-surface waters along a latitudinal gradient in the Atlantic Ocean were found to contain 1.15 microplastic particles m À3 , predominantly microfilaments and mainly polyethylene and polyamide (Kanhai et al, 2017). Ryan et al (2019) suggest that microfibres should be treated as a separate category of pollutants, containing both natural and synthetic fibres and, in view of the relative difficulty in determining the exact nature of microfibres (Gong and Xie, 2020;Gaylarde et al, 2021;Ivar do Sul, 2021;Lu et al, 2021), this is a reasonable suggestion, although future improvements in analytical techniques (Castelvetro et al, 2021;Lin et al, 2021;Lu et al, 2021;Monteleone et al, 2021;Liu et al, 2020;Munno et al, 2020) may make it unnecessary. Synthetic textile fibres can be very varied and include the plastics polyamide, polyvinyl chloride, polyurethane/elastane, modacrylic, polyacrylonitrile, polyethylene terephthalate (PET), and other polyesters.…”

Section: Introductionmentioning

confidence: 99%

Plastic microfibre pollution: how important is clothes’ laundering?

Gaylarde

Baptista-Neto

Fonseca

2021

Heliyon

Self Cite

101

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Microfibres from clothes laundering are the main source of primary microplastics in oceans. Fibres are frequently the most common plastics found in aquatic animals. The main plastic in polluting microplastics is PET. Various toxic substances are incorporated in textile microfibres. Fibres contribute up to 90% total plastic mass in wastewater treatment plants. A Standard Test is required to allow the development of microfibre release control actions.

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Nanoplastics in aquatic systems - are they more hazardous than microplastics?

Cited by 160 publications

References 110 publications

Functionalized Nanoplastics (NPs) Increase the Toxicity of Metals in Fish Cell Lines

Functionalized Nanoplastics (NPs) Increase the Toxicity of Metals in Fish Cell Lines

Metabolomic Studies for the Evaluation of Toxicity Induced by Environmental Toxicants on Model Organisms

Plastic microfibre pollution: how important is clothes’ laundering?

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