High temperature depended on the ageing mechanism of microplastics under different environmental conditions and its effect on the distribution of organic pollutants

Ding, Ling; Mao, Ruofan; Ma, Sirui; Guo, Xuetao; Zhu, Lingyan

doi:10.1016/j.watres.2020.115634

Cited by 300 publications

(69 citation statements)

References 49 publications

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“…MPs inevitably undergo aging in aquatic environments with the assistance of environmental factors such as sunlight irradiation and temperature change. 8,75 The aging processes could change the surface structure, hydrophobicity, crystallinity, and SSA of MPs, and increase the numbers of CO, CO, OH, or other oxygen-containing groups on the surface of MPs (Figure 5). 19,75,76,127−129 The carbonyl index (obtained from FTIR) and O/C ratio (obtained from XPS) would increase after aging such as photooxidation, advanced oxidation, and high temperatureinduced changes.…”

Section: Factors Affecting Ats Adsorption On Mpsmentioning

confidence: 99%

Interaction of Microplastics with Antibiotics in Aquatic Environment: Distribution, Adsorption, and Toxicity

Wang

Yang

Liu

et al. 2021

Environ. Sci. Technol.

222

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As two major types of pollutants of emerging concerns, microplastics (MPs) and antibiotics (ATs) coexist in aquatic environments, and their interactions are a source of increasing concern. Therefore, this work examines the interaction mechanisms of MPs and ATs, and the effect of MPs on ATs bioavailability and antibiotic resistance genes (ARGs) abundance in aquatic environments. First, the mechanisms for ATs adsorption on MPs are summarized, mainly including hydrophobic, hydrogen-bonding, and electrostatic interactions. But other possible mechanisms, such as halogen bonding, CH/π interaction, cation−π interaction, and negative charge-assisted hydrogen bonds, are newly proposed to explain the observed ATs adsorption. Additionally, environmental factors (such as pH, ionic strength, dissolved organic matters, minerals, and aging conditions) affecting ATs adsorption by MPs are specifically discussed. Moreover, MPs could change the bioaccumulation and toxicity of ATs to aquatic organisms, and the related mechanisms on the joint effect are reviewed and analyzed. Furthermore, MPs can enrich ARGs from the surrounding environment, and the effect of MPs on ARGs abundance is evaluated. Finally, research challenges and perspectives for MPs−ATs interactions and related environmental implications are presented. This review will facilitate a better understanding of the environmental fate and risk of both MPs and ATs.

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Section: Factors Affecting Ats Adsorption On Mpsmentioning

confidence: 99%

Interaction of Microplastics with Antibiotics in Aquatic Environment: Distribution, Adsorption, and Toxicity

Wang

Yang

Liu

et al. 2021

Environ. Sci. Technol.

222

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“…Napper et al (2015) showed that rough polyethylene (PE) microplastic particles adsorbed more DDT and phenanthrene than smooth ones [29]. The crystallinity of polymers can be measured by X-ray diffraction [101].…”

Section: Strategies Characterizing the Polymer Typementioning

confidence: 99%

“…Investigating aged and unaged microplastic particles, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and FTIR can be used to determine the physical dimensions, morphologies, and chemical compositions [73,78,101,114]. The specific surface area and micropore volume can be studied with an accelerated surface and porosimetry system (ASAP) [83].…”

Section: Strategies Characterizing Weathered/aged Particlesmentioning

confidence: 99%

Organic Contaminants and Interactions with Micro- and Nano-Plastics in the Aqueous Environment: Review of Analytical Methods

et al. 2021

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Micro- and nanoplastic particles are increasingly seen not only as contaminants themselves, but also as potential vectors for trace organic chemicals (TOrCs) that might sorb onto these particles. An analysis of the sorbed TOrCs can either be performed directly from the particle or TOrCs can be extracted from the particle with a solvent. Another possibility is to analyze the remaining concentration in the aqueous phase by a differential approach. In this review, the focus is on analytical methods that are suitable for identifying and quantifying sorbed TOrCs on micro- and nano-plastics. Specific gas chromatography (GC), liquid chromatography (LC) and ultraviolet-visible spectroscopy (UV-VIS) methods are considered. The respective advantages of each method are explained in detail. In addition, influencing factors for sorption in the first place are being discussed including particle size and shape (especially micro and nanoparticles) and the type of polymer, as well as methods for determining sorption kinetics. Since the particles are not present in the environment in a virgin state, the influence of aging on sorption is also considered.

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“…8,9 Therefore, observed microplastics are aged under most conditions, and studies performed using virgin microplastics may underestimate the risk of contaminants adsorbed onto aged microplastics. Previous studies have revealed that the difference between aged microplastics and virgin microplastics is caused by alterations in physicochemical properties, including both structural [10][11][12][13] (e.g., surface area, crystallinity and surface roughness) and surface chemical properties [14][15][16][17] (e.g., functional groups and electrostatic interactions). Liu et al 16 found that the mobility of aged microplastics in the environment is greater than that of virgin microplastics because of the increased surface oxidation of aged microplastics, which enhances the surface charge and hydrophilicity.…”

Section: Introductionmentioning

confidence: 99%

Enhanced sorption of the UV filter 4-methylbenzylidene camphor on aged PET microplastics from both experimental and theoretical perspectives

et al. 2021

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High temperature depended on the ageing mechanism of microplastics under different environmental conditions and its effect on the distribution of organic pollutants

Cited by 300 publications

References 49 publications

Interaction of Microplastics with Antibiotics in Aquatic Environment: Distribution, Adsorption, and Toxicity

Interaction of Microplastics with Antibiotics in Aquatic Environment: Distribution, Adsorption, and Toxicity

Organic Contaminants and Interactions with Micro- and Nano-Plastics in the Aqueous Environment: Review of Analytical Methods

Enhanced sorption of the UV filter 4-methylbenzylidene camphor on aged PET microplastics from both experimental and theoretical perspectives

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