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Investigate the presence of plastic particles in bottled and reused water bottles for several times and medical feeder bottles
Summary
Researchers detected microplastics in bottled water, particularly in bottles that were reused multiple times or exposed to direct sunlight. PET bottles leached more microplastic particles under heat and UV stress, and particle counts increased with reuse cycles. This study highlights sunlight and mechanical wear as key factors increasing microplastic contamination in drinking water.
The research results revealed the presence of microplastics in bottled water exposed to the sun. The effect of direct sunlight on standard plastic bottle samples was studied and reused to estimate microplastic particles. Samples of standard plastic bottles made of water-packed polyethylene terephthalate (bottled water) were collected and compared with plastic bottle samples packed with wastewater. The number of microplastics was estimated through the sample filtration process, and then the number of particles was calculated using a microscope. The average number of microplastics measured in standard samples of bottled bottles exposed to sunlight was 180.7 microplastics/L. While the average number of particles for water-packed plastic bottles that have been reused several times and exposed under direct sunlight and the effect of the same conditions for standard samples was 326.2 microplastics/liter, and the results proved that there were obvious differences in the number of plastic particles as the research results showed that there were clear differences in the number of plastic particles between the water bottled in the standard polyethylene terephthalate bottles exposed to sunlight and the bottles reused several times. After their laboratory observation, the results of verifying the presence of plastic particles revealed the degradation of those particles in the nutrient liquid. This may be due, among other things, to the manufacture and packaging of these canals and the bottle from which they may be produced.
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