Microplastics and their environmental effects

Area of Science:

• Environmental Science
• Ecotoxicology
• Polymer Science

Background:

• Microplastics (MPs) are recognized as significant environmental contaminants with widespread ecological impacts.
• MP pollution affects marine, freshwater, and terrestrial ecosystems globally.
• Predicting MP exposure hotspots and scenarios remains challenging despite advancements in understanding MP behavior.

Purpose of the Study:

• To consolidate recent research on microplastic occurrence, effects, and associated chemical additives.
• To identify knowledge gaps in experimental data regarding MP uptake, accumulation, and ecotoxicological effects.
• To categorize and synthesize findings from a Virtual Special Issue on microplastic pollution.

Main Methods:

• Compilation and categorization of 19 contributions from 11 countries for a Virtual Special Issue.
• Thematic analysis of contributions focusing on MP occurrence and effects, chemical additives, and reviews.
• Synthesis of existing data on microplastic environmental presence and biological impacts.

Main Results:

• A significant portion of the research originated from Italy, India, Spain, and China.
• Contributions covered MP effects on aquatic and terrestrial organisms.
• The issue also addressed chemical additives in plastics and provided comprehensive review articles.

Conclusions:

• Despite increased data on MP occurrence, experimental data on uptake, accumulation, and effects are scarce.
• Further research is needed to fully understand the ecotoxicological impacts of microplastics.
• Addressing microplastic pollution requires a multi-faceted approach, including understanding chemical additives and biological effects.