Micro- and nano-plastics (MNPs) as emerging pollutant in ground water: Environmental impact, potential risks, limitations and way forward towards sustainable management

Chemical Engineering Journal, Год журнала: 2023, Номер 459, С. 141568 - 141568

Опубликована: Янв. 27, 2023

Язык: Английский

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Emergence of nanoplastics in the aquatic environment and possible impacts on aquatic organisms

The Science of The Total Environment, Год журнала: 2023, Номер 906, С. 167404 - 167404

Опубликована: Сен. 26, 2023

Язык: Английский

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Strategies and Challenges of Identifying Nanoplastics in Environment by Surface-Enhanced Raman Spectroscopy

Environmental Science & Technology, Год журнала: 2022, Номер 57(1), С. 25 - 43

Опубликована: Дек. 28, 2022

Nanoplastics (<1000 nm) have been evidenced to be universal in a variety of environmental media. They pose potential cytotoxicity and health risk due their tiny size, which allows them easily penetrate biological barriers enter cells. Here, we briefly review the various prevalent analytical techniques or tools for identifying nanoplastics, further move focus on advantages disadvantages. Surface-enhanced Raman spectroscopy (SERS) has implemented identification individual nanoparticles because its high sensitivity molecules ease rapid characterization. Therefore, introduce SERS technique following aspects, (1) principles SERS; (2) strategies advances detection nanoplastics; (3) applying real samples. We put our effort into summarization efficient substrates that essentially enable better extend discuss how reported nanoplastics pretreatment methodologies can bring analysis practical applications. A step moving forward is investigate problems challenges currently applied methods look at future research needs employing analysis.

Язык: Английский

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Assessing the Mass Concentration of Microplastics and Nanoplastics in Wastewater Treatment Plants by Pyrolysis Gas Chromatography–Mass Spectrometry

Environmental Science & Technology, Год журнала: 2023, Номер 57(8), С. 3114 - 3123

Опубликована: Фев. 14, 2023

The level of microplastics (MPs) in wastewater treatment plants (WWTPs) has been well evaluated by the particle number, while mass concentration MPs and especially nanoplastics (NPs) remains unclear. In this study, pyrolysis gas chromatography–mass spectrometry was used to determine concentrations NPs with different size ranges (0.01–1, 1–50, 50–1000 μm) across whole schemes two WWTPs. total decreased from 26.23 11.28 μg/L influent 1.75 0.71 effluent, removal rates 93.3 93.7% A B, respectively. proportions (0.01–1 were 12.0–17.9 5.6–19.5% respectively, efficiency lower than that (>1 μm). Based on annual effluent discharge, it is estimated about 0.321 0.052 tons released into river each year. Overall, study investigated a wide range 0.01–1000 μm wastewater, which provided valuable information regarding pollution distribution characteristics MPs, NPs,

Язык: Английский

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Quantitative analysis of nanoplastics in environmental and potable waters by pyrolysis-gas chromatography–mass spectrometry

Journal of Hazardous Materials, Год журнала: 2023, Номер 464, С. 133013 - 133013

Опубликована: Ноя. 16, 2023

Nanoplastics are emerging environmental contaminants, but their presence in and potable water remains largely understudied due to the absence of quantitative analytical methods. In this study, we developed validated a pretreatment method that combines hydrogen peroxide digestion Amicon® Stirred Cell ultrafiltration (at 100 kDa, approximately 10 nm) with subsequent detection by pyrolysis gas chromatography-mass spectrometry (Pyr-GC/MS). This allows for simultaneous identification quantification nine selected nanoplastic types, including poly(ethylene terephthalate) (PET), polyethylene (PE), polycarbonate (PC), polypropylene (PP), poly(methyl methacrylate) (PMMA), polystyrene (PS), polyvinylchloride (PVC), nylon 6, 66, samples based on polymer-specific mass concentration. Limits ranged from 0.01 0.44 µg/L, demonstrating method's ability quantitatively detect nanoplastics samples. Most were detected at concentrations between 0.04 1.17 except PC, which was consistently below limit (<0.44 µg/L). The prevalent polymer components PE (0.10 - µg/L), PET (0.06 0.91 PP (0.04 0.79 PS 0.53 µg/L) nanoplastics. presented offers an accurate means identify, quantify, monitor complex It fills gaps our understanding pollution levels, providing valuable methodology crucial reference data future studies.

Язык: Английский

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Photo-oxidation of Micro- and Nanoplastics: Physical, Chemical, and Biological Effects in Environments

Environmental Science & Technology, Год журнала: 2024, Номер 58(2), С. 991 - 1009

Опубликована: Янв. 3, 2024

Micro- and nanoplastics (MNPs) are attracting increasing attention due to their persistence potential ecological risks. This review critically summarizes the effects of photo-oxidation on physical, chemical, biological behaviors MNPs in aquatic terrestrial environments. The core this paper explores how photo-oxidation-induced surface property changes affect adsorption toward contaminants, stability mobility water porous media, as well transport pollutants such organic (OPs) heavy metals (HMs). It then reviews photochemical processes with coexisting constituents, highlighting critical factors affecting MNPs, contribution phototransformation other contaminants. distinct mechanism aged pointed out, terms toxicity organisms, biofilm formation, planktonic microbial growth, soil sediment community function. Furthermore, research gaps perspectives put forward, regarding underlying interaction mechanisms natural constituents under conditions, combined fate microbiological effect photoaged especially biotransformation pollutants.

Язык: Английский

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Analysis of aged microplastics: a review

Environmental Chemistry Letters, Год журнала: 2024, Номер 22(4), С. 1861 - 1888

Опубликована: Апрель 4, 2024

Abstract Microplastics are emerging contaminants that undergo progressive aging under environmental conditions such as sunlight irradiation, mechanical forces, temperature variations, and the presence of biological organisms. Since modifies microplastic properties, their own toxicity trapped pollutants, advanced methods to analyze microplastics required. Here we review with focus on process, qualitative identification, quantitative characterization, chemometrics. Qualitative identification is done by techniques, thermal e.g., degradation gas chromatography–mass spectrometry, spectral infrared, Raman, fluorescent, laser techniques. Quantitative characterization microscopy mass spectrometry. Microplastic results in a series surface physical changes, biofilm formation, chemical oxidation, alternation, deterioration. Changes properties allow differentiate aged microplastics. Infrared Raman spectroscopy rapid sensitive for complex samples. Combining two techniques preferable accurate detection categorization.

Язык: Английский

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Microplastic pollution in groundwater: a systematic review

Environmental Pollutants and Bioavailability, Год журнала: 2024, Номер 36(1)

Опубликована: Янв. 4, 2024

Groundwater, a crucial freshwater source faces increasing pollution from microplastics (MPs). This study aims to comprehensively review the aquifers, sampling and analysis methods, levels, polymer types, sizes of MPs in groundwater worldwide between 2017 2023. Very few reports exist on abundance, type, size, other characteristics field. The tools, sample collection quantities used for field varied considerably among studies. However, efforts enhance our understanding MP results through level measurements, on-site water quality parameters, ion analysis, blanks have been limited. mostly indicated higher concentrations urban industrial areas landfill sites, whereas lower were observed with minimal human influence. are predominantly polypropylene polyethylene. Standardized methods needed further promote research facilitate cross-comparisons.

Язык: Английский

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Polyethylene nanoparticles at environmentally relevant concentrations enhances neurotoxicity and accumulation of 6-PPD quinone in Caenorhabditis elegans

The Science of The Total Environment, Год журнала: 2024, Номер 918, С. 170760 - 170760

Опубликована: Фев. 6, 2024

Язык: Английский

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CRISPR/Cas12a-based biosensors for environmental monitoring and diagnostics

Environmental Technology & Innovation, Год журнала: 2024, Номер 34, С. 103625 - 103625

Опубликована: Апрель 4, 2024

Contaminants, such as nucleic acids or toxic small molecules, threaten both human health and ecosystems when they infiltrate the environment. The precise highly sensitive identification of contaminants holds paramount importance across diverse domains, including safeguarding food integrity, facilitating clinical diagnostics, monitoring environmental conditions. Traditional methodologies, encompassing spectroscopy, chromatography, sequencing, metagenomics, have conventionally served pivotal roles in detection processes. Nevertheless, these methods encountered recurring challenges related to sensitivity, specificity, portability. This review focuses on groundbreaking CRISPR/Cas12-based biosensors. These biosensors leverage incredible precision programmability CRISPR/Cas system recognize specific targets. Here, we comprehensively assess fundamental mechanisms that enable detection, ranging from guide RNA design collateral cleavage. versatility CRISPR/Cas12 becomes evident through their applications. applications encompass medical safety, monitoring. transition conventional ultimately represents a significant milestone contaminant detection. By incorporating molecular biology, nanotechnology, bioinformatics, potential reshape landscape water CRIPSR-Cas diagnostics is transformative technology paves way for safer healthier future environment life.

Язык: Английский

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