Assessing the release of microplastics from reusable plastic water bottles and their exposure to toddlers.

Microplastics measuring 20-50 μm are consistently released from polypropylene water bottles used by toddlers, with an estimated intake of 1.2 ng/kg/day after 100 sips.

• Why it matters: Understanding microplastic exposure routes in young children is crucial due to potential health risks, yet data on microplastic release from common household items like water bottles are limited.
• What they did: The study simulated typical use and mechanical abrasion of toddler water bottles, analyzed microplastic release using laser direct infrared spectroscopy, and modeled daily polypropylene intake.
• The result: Findings suggest that microplastic ingestion in toddlers may occur routinely through drinking water from plastic bottles, highlighting a potential exposure pathway that warrants further attention.