Aging of microplastics affects their surface properties, thermal decomposition, additives leaching and interactions in simulated fluids

Luo, Huimin; Zhao, Yaoyao; Li, Yu; Xiang, Yahui; He, Dan; Pan, Xiangliang

doi:10.1016/j.scitotenv.2020.136862

Cited by 204 publications

(58 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Luo et al . [7] found many changes in the characteristics of microplastics during a simulated aging treatment. These included increased carbonyl content, increased specific surface area, and color change.…”

Section: Degradation Of Plastic Materials To Microplasticsmentioning

confidence: 99%

From plastics to microplastics and organisms

Bajt

2021

FEBS Open Bio

View full text Add to dashboard Cite

The amount of plastic waste and microplastics released into marine environments has increased rapidly in recent decades. The durability of plastic materials results in major problems following their release into the environment. This study provides an overview of recent findings on issues related to plastic degradation, the accumulation of microplastics in mussels and fishes, and the toxicological effects associated with the ingestion of microplastics. These findings confirm the serious problem of slowly degrading plastics (which rarely degrade fully) in natural marine environments. Microplastics have become widespread pollutants and have been detected in mussels and fish around the world. Microplastic particles, whether virgin or with adsorbed pollutants on their surfaces, pose a health problem after being ingested by marine organisms. This paper ends by highlighting the need for certain improvements in studies of these phenomena.

show abstract

Section: Degradation Of Plastic Materials To Microplasticsmentioning

confidence: 99%

From plastics to microplastics and organisms

Bajt

2021

FEBS Open Bio

View full text Add to dashboard Cite

show abstract

“…For example, polyvinyl chloride nanoplastics with a density of 1.4 g/cm 3 have been found to disperse in a water column, rather than settle out of solution like their macro counterparts (Ter Halle et al 2017 ). However, the fate of the agglomerates remains uncertain because detection over time is required to determine whether they sink or float, particularly because the physical and chemical properties of plastics also change with aging (Luo et al 2020 ).…”

Section: Discussionmentioning

confidence: 99%

Effect of Nanoplastic Type and Surface Chemistry on Particle Agglomeration over a Salinity Gradient

Shupe

Boenisch

Harper

et al. 2021

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

Agglomeration of nanoplastics in waters can alter their transport and fate in the environment. Agglomeration behavior of 4 nanoplastics differing in core composition (red-or blue-dyed polystyrene) and surface chemistry (plain or carboxylated poly[methyl methacrylate] [PMMA]) was investigated across a salinity gradient. No agglomeration was observed for carboxylated PMMA at any salinity, whereas the plain PMMA agglomerated at only 1 g/L. Both the red and the blue polystyrene agglomerated at 25 g/L. Results indicate that both composition and surface chemistry can impact how environmental salinity affects plastic nanoparticle agglomeration.

show abstract

“…When released into the environment, plastics are subject to slow photo- and thermo-oxidative degradation and a small amount of biodegradation, in addition to undergoing mechanical fragmentation with the formation of secondary MPs and NPs [ 18 , 19 , 20 ]. The oxygen-containing functional groups generated in the aging processes (shown by the increased carbonyl content and the presence of the hydroxyl group) modifies the physicochemical characteristics of the particle surface, making the polymers more reactive and enhancing their ability to interact with cells [ 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Acute and Sub-Chronic Effects of Microplastics (3 and 10 µm) on the Human Intestinal Cells HT-29

Visalli

Facciolà

Ciarello

et al. 2021

IJERPH

View full text Add to dashboard Cite

Due to ingestion of contaminated foods, the human gastrointestinal tract is the most likely site of exposure to microplastics (MPs) with gut barrier dysfunction and intestinal inflammation. Aimed to assess the effects induced by MPs with different granulometry (polystyrene (PS) 3 and 10 µm), we performed an in vitro study by using the human intestinal cell line HT29. As a novelty, we assessed the sub-chronic exposure extending the treatment up to 48 days simulating the in vivo situation. In the range of 100–1600 particles mL−1, both the PS suspensions had moderate cytotoxicity after 24 h with percentages of mortality between 6.7 and 21.6 for the 10 µm and 6.1 and 29.6 for the 3 µm PS. Microscopic observation highlighted a more pronounced lysosomal membrane permeabilization in HT29 exposed to PS 3µm. Reactive oxygen species production was higher in cells exposed to PS 10 µm, but sub-chronic exposure highlighted the ability of the cells to partially neutralize this effect. Comet-assay confirmed the temporary oxidative damage that was PS-induced. Overall, considering the very fast turnover of intestinal cells, the increase in cell mortality, equal to 25% and 11% for 3 and 10 µm PS-MPs for each time point, could trigger intestinal disorders due to prolonged exposure.

show abstract

Aging of microplastics affects their surface properties, thermal decomposition, additives leaching and interactions in simulated fluids

Cited by 204 publications

References 69 publications

From plastics to microplastics and organisms

From plastics to microplastics and organisms

Effect of Nanoplastic Type and Surface Chemistry on Particle Agglomeration over a Salinity Gradient

Acute and Sub-Chronic Effects of Microplastics (3 and 10 µm) on the Human Intestinal Cells HT-29

Contact Info

Product

Resources

About