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Análise da presença de microplásticos em diferentes marcas de água engarrafada na região 6 - Equador
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Researchers analyzed 72 bottled water samples from four brands in Ecuador's Region 6 for microplastic contamination using FTIR spectroscopy, finding fibers and fragments in all brands with sizes from 4.4–840 µm. Polyethylene was the dominant polymer and one brand had significantly higher MP concentrations, averaging 233.1 particles per liter.
Due to the excessive use of plastics in the human food chain, the aim of this investigation was to evaluate the presence of microplastics in bottled water in region 6 of Ecuador. For this purpose, 72 samples from four different brands of bottled water were analyzed, various plastic particles (fibers and fragments) were found, which were subsequently confirmed through FTIR (Fourier-transform infrared spectroscopy). A full range of fragment sizes, from 4.4 to 248.29 µm, and fiber sizes, from 102.64 to 840.20 µm, were identified, which were classified as secondary microplastics. A statistical analysis was conducted to determine the means of fibers and fragments found in each brand and it was established that brand B had the highest quantity of microplastics, with an average of 233.1 particles per liter. Finally, polyethylene was identified as the most recurrent type of particle detected by FTIR, suggesting that the bottles themselves may be a source of contamination.
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Analysis of the presence of microplastics in different brands of bottled water in Regional 6 - Ecuador
AI summary Read the abstract
Researchers analyzed 72 water samples from four brands of bottled water in Ecuador's Region 6 for microplastic content using FTIR spectroscopy. Microplastic fibers and fragments were found in all brands, with one brand averaging 233.1 particles per liter and polyethylene as the most frequently identified polymer type.
Microplastics in Spanish bottled water
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Researchers analyzed 22 bottled water samples sold in Spain -- packaged in plastic, glass, and cans -- by filtering entire bottle volumes and characterizing particles via micro-FTIR, finding microplastic concentrations of 0-27 particles/L (median 6.67 particles/L) with cellulosic fibers, polyamide, and PET as the dominant polymer types.
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Researchers investigated microplastic contamination in five brands of bottled drinking water from South Tangerang, Indonesia, using digital microscopy and micro-FTIR analysis. All samples were contaminated, predominantly with cellulose-based fibres ranging 0.042-3.668 mm in length, while neither polypropylene from packaging nor polyethylene from bottle caps was detected.
FTIR-Based Identification of Microplastics in Commercial Bottled Drinking Water
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Scientists found tiny plastic particles in all 10 brands of bottled water they tested, using a special technique to identify the plastic types. These microplastics likely come from the plastic bottles and packaging process itself. While we don't yet know the full health effects of drinking these plastic particles, this study shows that even bottled water isn't free from plastic pollution.
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