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Updated: May 23, 2025

Sampling, Identification and Characterization of Microplastics Release from Polypropylene Baby Feeding Bottle during Daily Use
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MPs Entering Human Circulation through Infusions: A Significant Pathway and Health Concern

Tingting Huang1,2, Yangyang Liu1,2, Licheng Wang1,2

  • 1Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, IRDR International Center of Excellence on Risk Interconnectivity and Governance on Weather, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China.

Environment & Health (Washington, D.C.)
|May 22, 2025
PubMed

Insights

Microplastic particles (MPs) are found in intravenous infusion fluids, posing health risks. This study quantifies polypropylene MPs in filtrates, highlighting potential blood exposure and clinical effects.

Area of Science:

  • Environmental Health
  • Materials Science
  • Medical Technology

Background:

  • Human exposure to microplastic particles (MPs) is a growing health concern.
  • Intravenous infusion is a direct route for MPs to enter the bloodstream, often originating from polypropylene (PP) bottles.
  • Current filtration methods may not fully remove MPs from infusion fluids.

Purpose of the Study:

  • To quantify microplastic particles in intravenous infusion filtrates.
  • To determine the size distribution of these microplastic particles.
  • To discuss the potential health implications of MPs in the bloodstream.

Main Methods:

  • Analysis of microplastic content in infusion filtrates.
  • Utilized surface-enhanced Raman spectroscopy (SERS) and scanning electron microscopy (SEM).

Main Results:

  • Significant levels of polypropylene (PP) microplastic particles detected (approximately 7500 particles/L).
  • MP sizes ranged from 1 to 62 μm, with a median of approximately 8.5 μm.
  • Approximately 90% of particles were between 1 and 20 μm, with 60% between 1 and 10 μm.

Conclusions:

  • Intravenous infusions can introduce a substantial number of MPs into the bloodstream.
  • Potential for MP deposition in organs and associated clinical effects require further investigation.
  • Quantitative data are crucial for risk-benefit assessment of intravenous therapies.

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