Glass bottles found to contain more microplastics than plastic bottles

https://phys.org/news/2025-06-glass-bottles-microplastics-plastic.html

by Upstairs-Bit6897

6 comments

  2. So, the bottlecaps used are contaminating the contents of the bottles…
    Man, these titles…for a science magazine these people should be ashamed of themselves.

  4. What an inflammatory article.

    #Glass isn’t safe, keep using plastic PLEEEAAASEE!!

    *contamination comes from plastic in paint used on cap*

    ***Science***

  6. “The MPs observed in the controls (air and negative controls) were subtracted from the results on the beverages according to their form (fiber or fragment), color and polymer.”

    This line is concerning because they don’t address the rate of breakdown in each liquid.

    If control bottle has high base fiber, but in liquid rate of decay is cause fiber to become fragment you can’t really say much about results. Kinda weird way to normalize using titer counts. Should use mass to normalize instead or some other method.

    Six samples is weak. Study needs to be entirely redone. France is getting robbed lol. No wonder they found non-parametric distributions. Not to say it’s not possible, but it is likely with low sample size and low capture.

    “As data were not normally distributed (p-value < 0.001, Shapiro-Wilks test), a Kruskal-Wallis test (KW) was performed to highlight the significant differences in microplastic levels within the container and brand groups.”

    This sentence gives away the game. You don’t run statical tests to “highlight” you run them to test hypotheses…authors appear to be p-hacking…verifying their own assumptions about data.

    This is a very weak paper and it’s sad to see it being widely circulated. Will inevitably lead to misinformation and bad policy. Authors should retract and cleanup.

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