Terrestrial plants as a potential temporary sink of atmospheric microplastics during transport

Liu, Kai; Wang, Xiaohui; Song, Zhangyu; Wei, Nian; Li, Daoji

doi:10.1016/j.scitotenv.2020.140523

Cited by 130 publications

(46 citation statements)

References 22 publications

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“…Zhang et al, 2020a;Y. Zhang et al, 2020b), which was significantly higher than MP deposition in an associated outdoor environment (0.7 × 10 3 -1.9 × 10 3 n/m 2 /day) (Liu et al, 2020). Many factors are posited to explain the spatial variation of indoor airborne MPs, such as the materials comprising clothing, bedding, carpets and furniture, cleaning mode/frequency and airflow turbulence/filtering caused by human activities and ventilation systems (Dris et al, 2017;Q.…”

Section: Spatial Variation Of Airborne Mps In Different Environmentsmentioning

confidence: 95%

“…In addition to MPs from textile products, MPs originating from weathering and fragmentation of plastic products, such as plastic bags, packaging materials and bottles, contribute to contrasting polymer composition of the airborne MPs in outdoor environments (Cai et al, 2017;Zeng, 2018). As a result, MPs reported in outdoor atmospheric deposition have a greater diversity of sizes, shapes and polymer composition (Liu et al, 2019;Liu et al, 2020). The predominance of PE, PS and PET in the outdoor airborne MPs of Wenzhou differs considerably in composition to indoor MPs, implying the origin of MPs in the outdoor atmosphere may be closer to the typical plastic debris littering the urban environment.…”

Section: Spatial Variation Of Airborne Mps In Different Environmentsmentioning

confidence: 99%

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Airborne microplastics in indoor and outdoor environments of a coastal city in Eastern China

Liao

et al. 2021

Journal of Hazardous Materials

225

105

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Microplastics (MPs) in marine and terrestrial environments have been intensively studied, but the dynamics of airborne MPs remains limited. Existing studies on atmospheric MPs are mostly derived from collection of atmospheric deposition, whereas direct measurements of airborne MPs are scarce. However, the abundance of airborne MPs is more relevant for evaluating human inhalation exposure risk. Herein, airborne MPs in indoor and outdoor environments from urban and rural areas of a coastal city in eastern China were investigated. MP concentrations (mean±SD) in indoor air (1583 ± 1180 n/m 3 ) were an order of magnitude higher than outdoor air (189 ± 85 n/m 3 ), and airborne MP concentrations in urban areas (224 ± 70 n/m 3 ) were higher than rural areas (101 ± 47 n/m 3 ). MPs smaller than 100 µm dominated airborne MPs, and the predominant shape of airborne MPs was fragments, as opposed to fibers. The larger MP size fractions contained a higher proportion of fibers, whereas the smaller size fractions were nearly exclusively composed of fragments. The health risk caused by ubiquitous airborne MPs should not be discounted as the maximum annual outdoor exposure of airborne MPs can reach 1 million/year, while indoor exposure may be even higher due to higher indoor airborne MP concentrations.

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Section: Spatial Variation Of Airborne Mps In Different Environmentsmentioning

confidence: 95%

Section: Spatial Variation Of Airborne Mps In Different Environmentsmentioning

confidence: 99%

Airborne microplastics in indoor and outdoor environments of a coastal city in Eastern China

Liao

et al. 2021

Journal of Hazardous Materials

225

105

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“…Acrylate copolymers; i.e., ethylene/ethyl acrylate copolymer and poly (t-butyl acrylate) (Fig. 5d) were also identi ed, previously reported by Liu et al (2020) in atmospheric microplastics deposited on terrestrial plants, and used in commercial shower gels, peelings, waterproof sunscreen or as a gallant for lipstick (Liebezeit and Dubaish 2012).…”

Section: Resultsmentioning

confidence: 54%

Assessment of Microplastics in a Municipal Wastewater Treatment Plant With Tertiary Treatment: Removal Efficiencies and Loading Per Day Into the Environment

Bayo

Olmos

López-Castellanos

2021

Preprint

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This study investigates the removal of microplastics from wastewater in an urban wastewater treatment plant located in Southeast Spain, including an oxidation ditch, rapid sand filtration, and ultraviolet disinfection. A total of 146.73 L of wastewater samples from influent and effluent were processed, following a density separation methodology, visual classification under a stereomicroscope, and FTIR analysis for polymer identification. Microplastics proved to be 72.41% of total microparticles collected, with a global removal rate of 64.26% after the tertiary treatment and within the average retention for European WWTPs. Three different shapes were identified: i.e., microfiber (79.65%), film (11.26%), and fragment (9.09%), without the identification of microbeads despite the proximity to a plastic compounding factory. Fibers were less efficiently removed (56.16%) than particulate microplastics (90.03%), suggesting that tertiary treatments clearly discriminate among forms, and reporting a daily emission of 1.6 x 107 microplastics to the environment. Year variability in microplastic burden was cushioned at the effluent, reporting a stable performance of the sewage plant. Eight different polymer families were identified, LDPE film being the most abundant form. Future efforts should be carried on source control, plastic waste management, improvement of legislation, and specific microplastic-targeted treatment units, especially for microfiber removal.

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“…In the last two decades, both microplastics (MPs, 1 µm to 5 mm) and nanoplastic (NPs, <1 µm) in marine, freshwater, and terrestrial ecosystems have attracted widespread attention all over the world 3,4,5,6 . Compared with the welldocumented reports of plastic debris in aquatic ecosystems, there is a marked lack of knowledge about the impact of MPs/NPs on terrestrial ecosystems (especially agroecosystems), which has become a eld of interest for scientists 3, 7, 8 . As reported, MPs/NPs can enter the agricultural environment through sewage irrigation 9,10,11 , sludge and fertilizer application 12,13,14 , plastic-lm mulch degradation 15,16 , and even atmospheric deposition 17,18 . Consequently, the mass input loadings of plastic debris in agroecosystems have led to the frequent occurrence of MPs/NPs in agricultural soil like arable soil of southwestern China 19 , Swiss oodplain soils 20 , and farmland of southeast Germany 21 .…”

Section: Introductionmentioning

confidence: 91%

Transcriptome mechanisms underlying interaction of polystyrene nanoplastics and wheat Triticum aestivum L.

Zhou¹,

Lian²,

Liu³

et al. 2020

Preprint

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Microplastics (MPs) and nanoplastics (NPs) have inevitably entered and accumulated in terrestrial ecosystems. Recently, the report on MPs/NPs taken-up by crop plants has raised particular concerns. However, molecular mechanisms underlying the interaction of MPs/NPs and crop plant are still vague and elusive. To address this scientific gap, we identified differentially expressed genes (DEGs) and performed co-expression network analyses in hydroponically grown wheat (Triticum aestivum L.) with ambient polystyrene NPs (PSNPs) concentration (0-10 mg/L). PSNPs could significantly shape the gene expression pattern in wheat with a tissue-specific mode. Four regulatory modules associated with the plant performance and nutrient capture were identified using WGCNA analysis. In addition, carbon metabolism, amino acid biosynthesis, MAPK signaling pathway-plant, plant hormone signal transduction, and plant-pathogen interaction were the most enriched KEGG pathways for all DEGs and target module eigengenes. These results confirm that NPs-induced genetic changes are the dominating driven forces for the observed plant growth or defense responses, shedding new light on the molecular mechanism and environmental implication behind the interaction of NPs and crop plants.

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Terrestrial plants as a potential temporary sink of atmospheric microplastics during transport

Cited by 130 publications

References 22 publications

Airborne microplastics in indoor and outdoor environments of a coastal city in Eastern China

Airborne microplastics in indoor and outdoor environments of a coastal city in Eastern China

Assessment of Microplastics in a Municipal Wastewater Treatment Plant With Tertiary Treatment: Removal Efficiencies and Loading Per Day Into the Environment

Transcriptome mechanisms underlying interaction of polystyrene nanoplastics and wheat Triticum aestivum L.

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