| Citation: | ZHENG H Y,WU Z X,LI Q W,et al.Study on the occurrence of microplastics in bottled drinking water[J].Journal of Environmental Engineering Technology，2024，14（3）：758-763 doi: 10.12153/j.issn.1674-991X.20240110
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Focusing on the source characteristics (including water source and packaging materials) of microplastic pollution in bottled water and the bottleneck problem restricting the detection of small-particle microplastics, different brands and different types of bottled water commonly available on the market were selected as research objects, and the concentrations of microplastics (PP, PE, PS, PVC, PET) in the water samples were detected by automatic thermal desorption-gas chromatography-mass spectrometry (ATD-GCMS). The results showed that the main components of microplastics in bottled water were PVC [(2.95±2.03)μg/L], PET [(1.84±2.14)μg/L] and PE [(1.86±1.84)μg/L]. There were significant differences in PVC (P<0.05) and PET (P<0.05) contents in the bottled mineral water, but no significant differences in PE contents. By contrast, there was no statistical significance of PVC and PET contents in different brands of purified water, but there were significant differences in PE contents (P<0.05). The occurrence of microplastics in bottled water was affected by microplastic pollution in source water and the release of microplastics in packaging materials. By comparing and analyzing the occurrence characteristics of microplastics in bottled drinking water, data support should be provided for the future development of management measures to reduce the risk of microplastic intake by drinking water and to prevent and control the health risks.
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