Facemasks: A Looming Microplastic Crisis.

Area of Science:

• Environmental Science
• Materials Science
• Ecotoxicology

Background:

• Single-use disposable facemasks are prevalent COVID-19 preventive tools.
• Improper disposal leads to environmental contamination in aquatic and terrestrial ecosystems.
• Facemasks can release microplastic fibers, posing a poorly understood ecological threat.

Purpose of the Study:

• To quantify microplastic fiber release from common facemask types (KF-AD, KF94, surgical, FFP1).
• To assess the impact of mechanical agitation duration on fiber release.
• To estimate the potential scale of microplastic pollution from facemasks in South Korea.

Main Methods:

• Mechanical agitation of facemask samples in water for 24, 48, and 72 hours.
• Identification of mask material composition, primarily polypropylene.
• Quantification of released microplastic fibers using microscopy.

Main Results:

• Polypropylene is the main component of the tested facemasks.
• Surgical and KF94 masks exhibited the highest microplastic fiber release rates.
• A single KF-AD mask can release approximately 47 fibers/day, potentially leading to over 1.3 billion fibers daily in South Korea.
• Fiber release increased significantly with extended agitation time (24 to 48 hours).

Conclusions:

• Disposable facemasks are a significant source of microplastic pollution in aquatic environments.
• The rate of microplastic fiber release escalates with increased environmental exposure and agitation.
• Urgent measures are needed to mitigate microplastic pollution from widespread facemask usage.