Environmental Science: Nano最新文献

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Structure-dependent mercury sequestration and microbial methylation mediated by FeS nanoparticles in contaminated groundwater
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2025-04-23 DOI: 10.1039/d5en00212e
Xiaoyu Huang, Luyao Sun, xianjin tang, Yanyan Gong
{"title":"Structure-dependent mercury sequestration and microbial methylation mediated by FeS nanoparticles in contaminated groundwater","authors":"Xiaoyu Huang, Luyao Sun, xianjin tang, Yanyan Gong","doi":"10.1039/d5en00212e","DOIUrl":"https://doi.org/10.1039/d5en00212e","url":null,"abstract":"Iron sulfide nanoparticles (CMC-FeS) have demonstrated great potential for selective and effective in situ mercury (Hg) immobilization in soil and groundwater through sorption, coprecipitation, or precipitation. Yet, the relative contributions of these immobilization mechanisms on Hg removal and their impacts on microbial mercury methylation in groundwater remain unknown. Here, we revealed that the Hg removal efficiency ranked as sorption (82.2%) > coprecipitation (75.2%) > chemical precipitation (22.3%). Conversely, the net MeHg production exhibited an inverse trend: sorption (46.73 nM) < coprecipitation (50.67 nM) < chemical precipitation (59.82 nM). Other than dissolved Hg(II), the particulate Hg species including sorbed (Hg-CMC-FeSsorp), coprecipitated (Hg-CMC-FeScpt), and precipitated (Hg-CMC-FeSpre) were bioavailable to Geobacter sulfurreducens PCA and contributed to MeHg production following the order of dissolved Hg(II) > Hg-CMC-FeScpt > Hg-CMC-FeSsorp > Hg-CMC-FeSpre. Particulate Hg effectively prevented the microbial reduction of Hg(II) and thus, the production of Hg(0) during Hg methylation. Methylation potential of particulate Hg was probably correlated with the Hg-S coordination configuration. Hg-CMC-FeSsorp and Hg-CMC-FeSpre displayed tetrahedral Hg-S4 coordinations whereas Hg-CMC-FeScpt exhibited a linear Hg-S2 coordination. MeHg production correlated linearly with Hg removal efficiency, and the produced MeHg can be predicted based on the known Hg removal performance. The findings highlight the paramount role of Hg speciation and coordination chemistry in controlling microbial methylation and provided a mechanistic basis for developing next-generation Hg sorbents through structural modulation to achieve enhanced Hg immobilization and inhibited bioavailability.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"52 6 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Critical Role of Coexistence Order and Interfacial Forces in the Aggregation of Polystyrene Nanoplastics Induced by Nano-SiO2 and Metal Cations
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2025-04-23 DOI: 10.1039/d5en00392j
Pengju Ren, Yihan Chi, Lijuan Wang, Yuanyuan Tang
{"title":"Critical Role of Coexistence Order and Interfacial Forces in the Aggregation of Polystyrene Nanoplastics Induced by Nano-SiO2 and Metal Cations","authors":"Pengju Ren, Yihan Chi, Lijuan Wang, Yuanyuan Tang","doi":"10.1039/d5en00392j","DOIUrl":"https://doi.org/10.1039/d5en00392j","url":null,"abstract":"This study investigated the aggregation of polystyrene (PS) NPs by kinetics experiments, considering single, simultaneous, and sequential addition of silica (SiO<small><sub>2</sub></small>) nanoparticles and metal cations. Results demonstrated that ion concentration and strength played a crucial role in determining PS stability across all systems. Surface interaction forces, particularly van der Waals forces, were fundamental mechanisms for PS aggregation. In simultaneous addition system, SiO<small><sub>2</sub></small> improved PS stability. The higher the concentration of SiO<small><sub>2</sub></small>, the more significant its stabilizing effect on PS, as SiO<small><sub>2</sub></small> competed with PS for metal cations. DLVO calculations and zeta potential analyses suggested that electric double layer repulsion was primary factor behind PS stabilization by SiO<small><sub>2</sub></small>. Additionally, other non-DLVO forces, such as hydrogen bonding and π-π interactions, might also affect the stabilization. SiO<small><sub>2</sub></small> was found to promote PS aggregation in the sequential addition system, contrasting with its stabilizing effect in the simultaneous addition system. The increase in aggregate size was primarily attributed to the bridging effects, though the enhanced electrostatic repulsion prevented a substantial rise in aggregate size. This study highlights how the presence of non-plastic particles influences the environmental behavior of NPs and deepens our understanding of the interactions between PS NPs and SiO<small><sub>2</sub></small> in complex and realistic aqueous environments.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"12 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of Depolluting and Antimicrobial Properties of Magnetic AgIO3/Fe3O4@SiO2 Photocatalytic Marine Concrete
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2025-04-23 DOI: 10.1039/d5en00321k
Guo Liang Lin, Mengchen Huang, Kun Han, Xueping Liu, Ruijing Liu, Hao Liu, Ruping Deng, Yu Fang, Qing Li, Min Yi Liu
{"title":"Investigation of Depolluting and Antimicrobial Properties of Magnetic AgIO3/Fe3O4@SiO2 Photocatalytic Marine Concrete","authors":"Guo Liang Lin, Mengchen Huang, Kun Han, Xueping Liu, Ruijing Liu, Hao Liu, Ruping Deng, Yu Fang, Qing Li, Min Yi Liu","doi":"10.1039/d5en00321k","DOIUrl":"https://doi.org/10.1039/d5en00321k","url":null,"abstract":"Visible light photocatalytic concrete represents an emerging technology with substantial potential for mitigating environmental challenges in marine ecosystems. This photocatalytic concrete demonstrates multifunctional capabilities including self-cleaning, decontamination, and antibacterial properties essential for sustainable marine environments. In this study, magnetic AgIO3/Fe3O4@SiO2 was first synthesized and in-situ sprayed onto low porosity underwater non-dispersible concrete fabricated by conduit method. The 56-day compressive strength, cubic and prismatic compressive strength, and impermeability grade of the low porosity underwater non-dispersible concrete are 40.60 MPa, 37.28 MPa, 24.89 MPa and P12-grade, indicating that its suitability for marine infrastructure applications. Moreover, the AgIO3/Fe3O4@SiO2 modified concrete demonstrated photocatalytic performance with 85.1% of tetracycline hydrochloride (TC) degradation within 60 minutes, effectively inactivation of Escherichia Coli (E. coli) cultures in seawater within 2 hours, and 75% formaldehyde decomposition within 4 hours under visible light exposure. These excellent properties can be attributed to the high specific surface area of 517.25 m2/g, narrowed band gap of 1.41eV, Z-scheme charge transfer mechanism and efficient reactive oxygen species (ROS) generation of AgIO3/Fe3O4@SiO2 .Moreover, analysis revealed that seawater chloride ions (Cl- ) undergo conversion to hypochlorite ions (ClO⁻) through superoxide radical (•O₂⁻)-mediated pathways, synergistically facilitating TC degradation. This work provides a sustainable approach for the industrial preparation of multifunctional photocatalytic underwater concrete, with prospective applications in offshore structures for biofilm inhibition and interfacial organic pollutant degradation at air-water boundaries.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"3 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nanoparticle-mediated mitigation of salt stress-induced oxidative damage in plants: insights into signaling, gene expression, and antioxidant mechanisms
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2025-04-22 DOI: 10.1039/d5en00174a
Km Madhuri Singh, Ambuj Bhushan Jha, Rama Shanker Dubey, Pallavi Sharma
{"title":"Nanoparticle-mediated mitigation of salt stress-induced oxidative damage in plants: insights into signaling, gene expression, and antioxidant mechanisms","authors":"Km Madhuri Singh, Ambuj Bhushan Jha, Rama Shanker Dubey, Pallavi Sharma","doi":"10.1039/d5en00174a","DOIUrl":"https://doi.org/10.1039/d5en00174a","url":null,"abstract":"Salt stress presents a major challenge to global agriculture, leading to decreased crop yields, diminished food quality, economic losses, and threats to food security. Elevated salinity levels enhance the production of reactive oxygen species (ROS), such as superoxide anions (O₂•−), hydrogen peroxide (H₂O₂), hydroxyl radicals (•OH), and singlet oxygen (¹O₂). These ROS can inflict severe damage on cellular components, including proteins, lipids, carbohydrates, and DNA. Although plants have innate antioxidant defenses to mitigate ROS effects, these defenses often fall short under salinity stress, leading to oxidative damage, stunted growth, and diminished productivity. Recent research highlights the potential of nanoparticles (NPs) to enhance plant resilience against salinity-induced oxidative stress. Various types of NPs, metal oxide nanoparticles (e.g., Fe₂O₃, TiO₂, ZnO, CeO₂, Se NPs), silicon-based nanoparticles (e.g., Si NPs, SiO₂ NPs), noble metal nanoparticles (e.g., Ag, Au-Ag alloy NPs), carbon-based nanoparticles (e.g., graphene oxide, carbon NPs), chitosan NPs, and composite/functionalized NPs (e.g., polyacrylic acid coated nanoceria, calcium-silicon NPs, selenium-chitosan NPs) can enhance plant resilience to salinity-induced oxidative stress. They enter plants through leaves, roots, or seeds. Once within plant cells, these NPs can act as direct scavengers of ROS or modulate antioxidant defense system. They affect signaling ions such as calcium, signaling molecules like nitric oxide (NO) and phytohormones, and regulatory factors like transcription factors (TFs), thereby regulating gene expression and production of antioxidant enzymes. Moreover, NPs can enhance the accumulation of non-enzymatic antioxidant compounds, such as ascorbate (AsA) and glutathione (GSH), further strengthening a plant’s ability to withstand oxidative stress. As research advances, understanding the full potential of NPs to mitigate salt stress and enhance agricultural sustainability is crucial. However, the long-term environmental impacts of NPs must also be carefully evaluated to ensure their safe and sustainable use.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"55 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143858071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The surface charge both influences the penetration and safety of polystyrene nanoparticles despite the protein corona formation
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2025-04-22 DOI: 10.1039/d4en00962b
Giulia Yuri Moscatiello, Carmina Natale, Mariagiovanna Inserra, Annalisa Morelli, Luca Russo, Nora Battajini, Laura Sironi, Davide Panzeri, Alessandro Corbelli, Ada De Luigi, Fabio Fiordaliso, Gabriele Candiani, Paolo Bigini, Luisa Diomede
{"title":"The surface charge both influences the penetration and safety of polystyrene nanoparticles despite the protein corona formation","authors":"Giulia Yuri Moscatiello, Carmina Natale, Mariagiovanna Inserra, Annalisa Morelli, Luca Russo, Nora Battajini, Laura Sironi, Davide Panzeri, Alessandro Corbelli, Ada De Luigi, Fabio Fiordaliso, Gabriele Candiani, Paolo Bigini, Luisa Diomede","doi":"10.1039/d4en00962b","DOIUrl":"https://doi.org/10.1039/d4en00962b","url":null,"abstract":"Micro- and nano-plastics' (MNPs') environmental persistence generates relevant alarm. This concern is amplified for non-biodegradable materials like polystyrene (PS). It is known that MNPs easily penetrate cells and accumulate in vital organs. Despite the great interest, a univocal idea about MNPs' toxicity is still lacking. In this study, PS-nanoparticles (PS-NPs) were employed as prototypic material. We focused our attention on the role played by the external surface in the internalization and toxicity of amine- and carboxylate-modified fluorescent PS-NPs with different z-potentials. Human embryonic kidney (HEK) 293 cells and <em>C. elegans</em> have been employed to model the effects of PS-NPs <em>in vitro</em> and <em>in vivo</em>. Both positive and negative PS-NPs entered cells primarily by clathrin-mediated endocytosis and were rapidly trapped by lysosomes. However, amine-modified positive NPs were more uptaken than negative ones and caused a dose-dependent decrease in cell growth and viability in HEK 293 cells. Internalized NPs and their mean distance from the cell nucleus have also been quantitatively characterized through a dedicated Cell Profiler-Matlab pipeline. The z-potential of PS-NPs also affected their toxic effect <em>in vivo</em>, being only positive NPs able to cause a dose-related decrease of <em>C. elegans</em> viability and defects in motility, pharyngeal function, reproduction, and development. These results underline the crucial role of the surface charge of PS-NPs in their interaction with cell membranes and <em>in vitro</em> and <em>in vivo</em> biological effects.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"108 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143858070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessment of the Toxicity of Bio-Synthesized Silver Nanoparticles on Oreochromis niloticus (nile tilapia)
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2025-04-16 DOI: 10.1039/d4en01125b
Luiz Gustavo Ribeiro, Edison Barbieri, Ana Olívia de Souza
{"title":"Assessment of the Toxicity of Bio-Synthesized Silver Nanoparticles on Oreochromis niloticus (nile tilapia)","authors":"Luiz Gustavo Ribeiro, Edison Barbieri, Ana Olívia de Souza","doi":"10.1039/d4en01125b","DOIUrl":"https://doi.org/10.1039/d4en01125b","url":null,"abstract":"Silver nanoparticles (AgNPs) have garnered significant attention due to their antimicrobial properties. However, their potential environmental impact remains a concern. This study evaluates the acute toxicity and physiological effects of biogenic AgNPs synthesized using Aspergillus tubingensis (AgNP-AT) on Oreochromis niloticus (Nile tilapia), a widely used bioindicator species. AgNP-AT were characterized using UV-Vis spectrophotometry (SPR peak at 420 nm), dynamic light scattering (DLS; 48±5 nm), and transmission electron microscopy (TEM; 35±10 nm). The 96-hours median lethal concentrations (LC50) for AgNP-AT was determined as 8.8 μM, whereas AgNO3 exhibited a significantly lower LC50 of 0.028 μM, indicating its higher toxicity. Exposure to AgNP-AT at 30, 35, and 40 μM resulted in a significant increase in oxygen consumption (from 0.2 to 0.4 mL O2/g/L/h) without affecting ammonia excretion. Swimming activity was reduced in a concentration-dependent manner, with fish exposed to 40 μM showing the most pronounced impairment. Histopathological analysis revealed a reduction in lamellar length (50% decrease) and an increase in lamellar width (60% increase), demonstrating structural alterations in the gills. These findings show that AgNP-AT, although less toxic than AgNO3, still induces physiological and morphological effects in Nile tilapia. This study provides valuable data for assessing the environmental risks of biogenic AgNPs and contributes to the development of safer nanotechnology applications.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"90 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143837591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessing the ecotoxicity of multicomponent nanomaterials using a classification SAR approach
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2025-04-15 DOI: 10.1039/d4en01183j
G. P. Gakis, I. G. Aviziotis, C. A. Charitidis
{"title":"Assessing the ecotoxicity of multicomponent nanomaterials using a classification SAR approach","authors":"G. P. Gakis, I. G. Aviziotis, C. A. Charitidis","doi":"10.1039/d4en01183j","DOIUrl":"https://doi.org/10.1039/d4en01183j","url":null,"abstract":"The emerging applications of nanotechnology have led to the synthesis, production and use of a continuously increasing number of nanomaterials. In recent years, the focus is being shifted to multicomponent nanomaterials (MCNMs), due to the control over their functional properties. At the same time, the increasing exposure of ecosystems to such materials has raised concerns over their environmental hazard, with several <em>in vivo</em> and <em>in vitro</em> studies used to assess the ecotoxicity of MCNMs. The demanding nature of such methods has also led to the increasing development of <em>in silico</em> methods, such as structure–activity relationship (SAR) models. Although such approaches have been developed for single component nanomaterials, models for the ecotoxicity of MCNMs are still sparse in scientific literature. In this paper, we address the case of MCNM ecotoxicity by developing an <em>in silico</em> classification SAR computational framework. The models are built over a dataset of 652 ecotoxicity measurements for 214 metal and metal oxide MCNMs, towards bacteria, eukaryotes, fish, plants and crustaceans. This dataset is, to the best of the authors' knowledge, the largest dataset used for MCNM ecotoxicity. It is found that two descriptors can adequately classify different MCNMs based on their ecotoxicity over the whole heterogeneous dataset. These descriptors are the hydration enthalpy of the metal ion and the energy difference between the MCNM conduction band and the redox potential in biological media. Although the classification does not allow a quantitative ecotoxicity assessment, the heterogeneous nature of the dataset can reveal key MCNM features that induce toxic action, allowing a more holistic understanding of MCNM ecotoxicity, as well as the nature of interaction between the different MCNM components.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"34 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143832034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Towards the Next Decade for Research on the Environmental Impact of Nanoscale Zerovalent Iron on Microorganisms
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2025-04-09 DOI: 10.1039/d4en01226g
Hakwon Yoon, Jaehwan Kim, Eunju Kim, Yoon-Seok Chang
{"title":"Towards the Next Decade for Research on the Environmental Impact of Nanoscale Zerovalent Iron on Microorganisms","authors":"Hakwon Yoon, Jaehwan Kim, Eunju Kim, Yoon-Seok Chang","doi":"10.1039/d4en01226g","DOIUrl":"https://doi.org/10.1039/d4en01226g","url":null,"abstract":"Nanoscale zerovalent iron (NZVI) is among the most widely used nanomaterials in environmental applications. With such an increased use of NZVI, there is a need to understand its potential impact on microorganisms, vital components of various ecosystems. Significant progress has been made in elucidating the molecular mechanisms underlying NZVI toxicity in model bacteria, while recent research has shifted toward evaluating its long-term impacts on environmental microbial systems. Herein, we first revisit a range of studies on NZVI-single microorganism interactions under aerobic and anaerobic conditions in an effort to make general conclusions regarding NZVI toxicity mechanism at the cellular level. Additionally, a comprehensive overview is provided on the effects of NZVI on complex bacterial consortia in natural aquatic and soil environments, as well as in wastewater treatment systems. Finally, we discuss future research directions for sustainable and environmentally friendly application of NZVI.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"245 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143806033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nanoplastic Paradox: Unraveling the Complex Toxicity of Nano-sized Polyethylene
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2025-04-09 DOI: 10.1039/d4en01032a
Katarzyna Roszek, Milena Jankowska, Agnieszka Bielicka, Marek Wiśniewski
{"title":"Nanoplastic Paradox: Unraveling the Complex Toxicity of Nano-sized Polyethylene","authors":"Katarzyna Roszek, Milena Jankowska, Agnieszka Bielicka, Marek Wiśniewski","doi":"10.1039/d4en01032a","DOIUrl":"https://doi.org/10.1039/d4en01032a","url":null,"abstract":"The increasing production of polyethylene has inevitably led to its accumulation in the environment, which gradually created a global environmental problem. Unfortunately, despite the huge attention paid to microplastics and the increasing research interest in nanoplastics in the environment, we are still far from fully understanding their true toxicity. The aim of the present work was to mimic the real oxidation process that forms the nano-sized polyethylene (nPE) particles from the larger waste, and to characterize the obtained nPE in terms of their chemical properties and cytotoxicity. Environmentally relevant nanoplastic was used to avoid the biased interpretations of its impact on cell viability in vitro and on physiology of American cockroach (Periplaneta Americana) as an in vivo model. The results obtained might be at least surprising, as the toxicity of nPE in both in-vitro and in-vivo tests increased with the dilution of the solution. This apparent contradiction is explained by the unique physicochemical properties of the obtained nanomaterial and the increasing contribution of the polar layer of nanoparticles formed during oxidation. Thus, the presence of Lewis acidic sites and the polarity of the surface underlie the observed phenomena: (i) the ability of nanoplastic particles to agglomerate and aggregate, (ii) their influence on cell viability, (iii) decrease in the membrane potential of neurons, and (iv) changes in the behavior of highly resistant organism such as Periplaneta americana.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"39 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143806032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Production, Labeling, and Applications of Micro- and Nanoplastic Reference and Test Materials
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2025-04-09 DOI: 10.1039/d4en00767k
Guillaume Crosset-Perrotin, Angelique Moraz, Raquel Portela, Victor ALCOLEA Alcolea-Rodriguez, David Burrueco-Subirà, Casey Smith, Miguel Bañares, Hosein Foroutan, D. Howard Fairbrother
{"title":"Production, Labeling, and Applications of Micro- and Nanoplastic Reference and Test Materials","authors":"Guillaume Crosset-Perrotin, Angelique Moraz, Raquel Portela, Victor ALCOLEA Alcolea-Rodriguez, David Burrueco-Subirà, Casey Smith, Miguel Bañares, Hosein Foroutan, D. Howard Fairbrother","doi":"10.1039/d4en00767k","DOIUrl":"https://doi.org/10.1039/d4en00767k","url":null,"abstract":"Challenges inherent to the extraction of micro- and nanoplastics (MNPs) from the environment, combined with the limited range of commercially available MNPs, have prompted an increasing number of researchers to generate in-house reference and test MNPs. The first part of this review provides a comprehensive overview of existing MNP production methods, including top-down and bottom-up fabrication techniques. Strengths and weaknesses of different methods are compared and contrasted, and the potential for optimization and control over MNP properties is discussed. Methods to label and to artificially weather MNPs before, during, or after production, as well as appropriate dispersion protocols for introducing MNPs into different media, are also covered. The second part of this review focuses on how reference and test MNPs have been implemented in different types of studies, categorized as toxicity, uptake, fate, and monitoring. Given the wide range of properties needed to fully define MNPs, we propose a set of essential properties that need to be characterized depending on the study type. Looking forward, we suggest future needs, not only in the creation of reference MNPs, but also in experimental protocols that would help to better understand the behavior and impacts of MNPs. Overall, this review aims to provide the necessary information to guide researchers in decision-making regarding which reference MNPs are most appropriate to answer their specific research questions and to serve as a framework that will contribute to obtaining reliable, benchmarked data urgently needed to develop consensus on the fate and risk posed by MNPs.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"31 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143805966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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