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Single Nanoplastics Detection and Nano-Chemical Analysis of Surface Degradation in Commercial Bottled Water
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Researchers developed a novel analytical approach that can detect and characterize individual nanoplastic particles as small as 30 nanometers in commercial bottled water. The method combines fluorescence-guided nanoscale imaging with infrared nanospectroscopy to identify particle size, shape, chemical identity, and surface degradation. The study represents a significant advance in the ability to analyze nanoplastic contamination in real food and beverage samples at the single-particle level.
Abstract Nanoplastics (NPs) are emerging as widespread environmental and food contaminants, posing significant concerns because of their potential to penetrate biological membranes, accumulate in tissues, and induce toxic effects. For understanding the impact of NPs on human health, a detailed characterization of their complex physicochemical properties is required. Yet, current analytical methods either lack single-particle spatial resolution, sensitivity, or specificity to detect and analyse NPs contaminating real samples. Here, for the first time, we detect and perform a nano-analytical characterisation of single NPs isolated from commercial drinking water as small as 30 nm; combining spatially confined hyper-concentration, fluorescence-guided nano-imaging, and chemical analysis via infrared nanospectroscopy. Our novel approach offers high-throughput single-particle analysis in real samples, enabling a multimodal characterisation of their 3D morphology, size, chemical identity, and surface degradation. This work paves the way to detect and analyse NPs in complex food matrices and biological systems, to study their interactions, fate, and toxicity.
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Researchers developed a novel method to detect both micro- and nanoplastics in drinking water using scanning electron microscopy and advanced infrared spectroscopy capable of identifying particles as small as 300 nanometers. The study found that bottled water had significantly higher concentrations of plastic particles than treated tap water, particularly for smaller micro- and nanoplastics, with polyamide, PET, and polyethylene being the most common polymers.
Characteristics of nano-plastics in bottled drinking water.
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Researchers detected nanoplastics in commercially bottled drinking water using novel nanoparticle analysis techniques, finding particles in the nanometer size range in multiple brands. These findings are concerning because nanoplastics are thought to be more biologically active than larger microplastics and can more easily cross biological barriers in the body.
Identification of Poly(ethylene terephthalate) Nanoplastics in Commercially Bottled Drinking Water Using Surface-Enhanced Raman Spectroscopy
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Scientists developed a new detection method using enhanced Raman spectroscopy to identify nanoplastics in commercially bottled drinking water. They found PET nanoplastics averaging about 88 nanometers in size in the bottled water samples tested. This study provides concrete evidence that people are consuming nanoplastics through a common daily source, and offers a tool that could help monitor plastic contamination in beverages.
Rapid single-particle chemical imaging of nanoplastics by SRS microscopy
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Using a new high-speed imaging technique, researchers detected and identified nanoplastics in bottled water at the single-particle level, finding roughly 240,000 plastic particles per liter. This is far more than previously estimated and includes particles smaller than 100 nanometers made from common plastics, suggesting our exposure to nanoplastics from bottled water may be much higher than thought.
Identification of microplastics and nanoplastics in environmental water by AFM-IR
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Scientists used a new technique called AFM-IR, which combines atomic force microscopy with infrared spectroscopy, to identify individual nanoplastic particles in environmental water for the first time. This method can detect particles as small as 100 nanometers, far beyond the limits of traditional microscopy. They found several types of nanoplastics in a water sample, including an epoxy and a biodegradable plastic, demonstrating that this tool could improve our ability to track nanoplastic pollution.
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