Automatic Identification of Individual Nanoplastics by Raman Spectroscopy Based on Machine Learning

Environmental Science & Technology, Год журнала: 2023, Номер 57(46), С. 18203 - 18214

Опубликована: Июль 3, 2023

The increasing prevalence of nanoplastics in the environment underscores need for effective detection and monitoring techniques. Current methods mainly focus on microplastics, while accurate identification is challenging due to their small size complex composition. In this work, we combined highly reflective substrates machine learning accurately identify using Raman spectroscopy. Our approach established spectroscopy data sets nanoplastics, incorporated peak extraction retention processing, constructed a random forest model that achieved an average accuracy 98.8% identifying nanoplastics. We validated our method with tap water spiked samples, achieving over 97% accuracy, demonstrated applicability algorithm real-world environmental samples through experiments rainwater, detecting nanoscale polystyrene (PS) polyvinyl chloride (PVC). Despite challenges processing low-quality nanoplastic spectra study potential forests distinguish from other particles. results suggest combination holds promise developing particle strategies.

Язык: Английский

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Riverine microplastics in the Mount Everest region affected by glacier meltwater

Journal of Hazardous Materials, Год журнала: 2025, Номер 488, С. 137331 - 137331

Опубликована: Янв. 27, 2025

Язык: Английский

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Natural Factors of Microplastics Distribution and Migration in Water: A Review

Water, Год журнала: 2024, Номер 16(11), С. 1595 - 1595

Опубликована: Июнь 3, 2024

Microplastics are widely present worldwide and of great concern to scientists governments due their toxicity ability serve as carriers other environmental pollutants. The abundance microplastics in different water bodies varied significantly, mainly attributed the initial emission concentration pollutants migration process determines abundance, fate, bioavailability water. Previous studies have proved that physicochemical properties themselves important factors affecting migration, but change external conditions is also one main controlling microplastics. In this paper, we focus on effects meteorological (rainfall, light, wind) distribution conclude influence affects inflow microplastics, physical chemical water, dynamics At same time, briefly summarized aquatic organisms, substrates, topography It believed organisms can affect through adsorption vivo transmission plants, feeding behavior, swimming, metabolism animals, extracellular polymers formed by microorganisms, original processes bodies. A full understanding mechanism theoretical significance for law comprehensively assessing pollution load safety risk

Язык: Английский

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Vertical transfer of microplastics in nearshore water by cultured filter-feeding oysters

Journal of Hazardous Materials, Год журнала: 2024, Номер 475, С. 134769 - 134769

Опубликована: Май 29, 2024

Язык: Английский

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Microplastic pollution characteristics and ecological risk assessment in the Wuding River Basin, China

Environmental Pollution, Год журнала: 2024, Номер 356, С. 124228 - 124228

Опубликована: Май 25, 2024

Язык: Английский

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Environmental nanoplastics quantification by pyrolysis-gas chromatography–mass spectrometry in the Pearl River, China: First insights into spatiotemporal distributions, compositions, sources and risks

Journal of Hazardous Materials, Год журнала: 2024, Номер 476, С. 135055 - 135055

Опубликована: Июнь 26, 2024

Язык: Английский

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Analysing micro- and nanoplastics with cutting-edge infrared spectroscopy techniques: a critical review

Analytical Methods, Год журнала: 2024, Номер 16(15), С. 2177 - 2197

Опубликована: Янв. 1, 2024

The escalating prominence of micro- and nanoplastics (MNPs) as emerging anthropogenic pollutants has sparked widespread scientific public interest. These minuscule particles pervade the global environment, permeating drinking water food sources, prompting concerns regarding their environmental impacts potential risks to human health. In recent years, field MNP research witnessed development application cutting-edge infrared (IR) spectroscopic instruments. This review focuses on advanced IR techniques relevant instrumentation analyse MNPs. A comprehensive literature search was conducted, encompassing articles published within past three years. findings revealed that Fourier transform (FTIR) spectroscopy stands most used technique, with focal plane array FTIR (FPA-FTIR) representing cutting edge in spectroscopy. second popular technique is quantum cascade laser (QCL-IR) spectroscopy, which facilitated rapid analysis plastic particles. Following closely optical photothermal (O-PTIR) can furnish submicron spatial resolution. Subsequently, there atomic force microscopy-based (AFM-IR) made it feasible MNPs at nanoscale level. instruments identified covered this were compared. Comparison metrics encompass substrates/filters, data quality, resolution, acquisition speed, processing cost. limitations these identified, recommendations address proposed. offer valuable guidance researchers selecting suitable for experiments, thereby facilitating advancements aimed enhancing our understanding health associated

Язык: Английский

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Microplastic pollution in Pearl River Networks: characteristic, potential sources, and migration pathways

Water Research, Год журнала: 2025, Номер 276, С. 123261 - 123261

Опубликована: Фев. 9, 2025

Язык: Английский

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Microplastics abundance associated with farmland use types and the impact on soil microbial communities: A case study in Southern China

Journal of Hazardous Materials, Год журнала: 2024, Номер 480, С. 136477 - 136477

Опубликована: Ноя. 12, 2024

Язык: Английский

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Spatial distribution and vertical characteristics of microplastics in the urban river: The case of Qinhuai River in Nanjing, China

Marine Pollution Bulletin, Год журнала: 2024, Номер 199, С. 115973 - 115973

Опубликована: Янв. 2, 2024

Язык: Английский

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