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Estimated exposure to microplastics through national and local brands of bottled water in Central India. | LitMetric

AI Article Synopsis

Article Abstract

Microplastics (MPs) are ubiquitous pollutants that affect various environmental matrices, including air, water, soil, food, and beverages. In India, there is limited research on microplastics in bottled drinking water, which is a significant route of MP exposure to the human body. To date, the data on the occurrence of MPs in national and local bottled water brands have not been studied and compared. Therefore, the current study focuses on the contamination of MPs in bottled water from different national and local brands procured from the market of Nagpur, India. The MPs were observed in all the analyzed samples. It was observed that the local bottled water showed higher MP contamination compared to national bottled water, with MP concentrations of 212 ± 100 MPs/L and 72 ± 36 MPs/L, respectively. The MPs were identified and characterized using microscopic and attenuated total reflectance-fourier transform infrared spectroscopy (ATR-FTIR) analysis, revealing that the dominant MP particles were fragments (71%), followed by fibers (23%), and others (6%). Among the observed particles, 50% of particles were black colored, followed by transparent (16%), red (13%), orange (8%), green (3%), blue (5%), and yellow (5%). The predominant polymer types were polyethylene (PE) and polyethylene terephthalate (PET). Overall, the pollution load indices suggested a moderate level of contamination in bottled water samples. Furthermore, the estimated annual human exposure to MPs was calculated as 5186 ± 3751 p/kg-bw/year for children and 1482 ± 1072 p/kg-bw/year for adults, making it a significant route of human exposure to MPs.

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Source
http://dx.doi.org/10.1007/s10661-024-12387-7DOI Listing

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