Microplastic sources, formation, toxicity and remediation: a review.

Area of Science:

• Environmental Science
• Toxicology
• Public Health

Background:

• Microplastic pollution is a pervasive global issue, with microplastics detected in diverse ecosystems and biological samples.
• Human health is increasingly threatened by microplastics, which are linked to various diseases including cancer and cardiovascular conditions.
• Understanding the sources, formation, and occurrence of microplastics is critical for addressing their environmental and health impacts.

Purpose of the Study:

• To comprehensively review the sources, formation, occurrence, toxicity, and remediation methods of microplastics.
• To discuss the implications of microplastic exposure on human health, including during pregnancy.
• To evaluate current and potential control strategies for mitigating microplastic pollution.

Main Methods:

• Literature review synthesizing data on microplastic pollution.
• Analysis of microplastic sources (ocean-based and land-based) and their contribution to pollution.
• Examination of toxicological effects on humans and animals, and environmental impacts.

Main Results:

• Microplastics have been identified in human biological samples (faeces, blood, placenta) and linked to diseases.
• Land-based sources contribute 80-90% of microplastic pollution, with significant global production and waste generation.
• Microplastics induce adverse toxic effects, including cytotoxicity, oxidative stress, and genotoxicity, even at low concentrations.

Conclusions:

• Microplastic pollution presents a serious threat to environmental and human health, necessitating urgent action.
• A multi-faceted approach involving reduced plastic consumption, behavioural change, and biodegradable alternatives is essential.
• Effective remediation technologies and global strategies are required to combat the growing microplastic crisis.