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Freshwater microplastics pollution: Detecting and visualizing emerging trends based on Citespace II
Liming Yao1, Li Hui2, Zhuang Yang2
1Business School, Sichuan University, Chengdu, 610065, China; State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, China.
Chemosphere
|December 22, 2019
Summary
Microplastic pollution is found in human waste and freshwater, posing risks to health. Research on freshwater microplastics lags behind marine studies, with limited data from developing nations and understudied water sources.
Area of Science:
- Environmental Science
- Ecotoxicology
- Public Health
Background:
- Microplastic particles (<5 mm) are detected in human feces and freshwater systems.
- Microplastics pose physical and chemical risks to humans and aquatic organisms.
- Existing research predominantly focuses on marine environments, neglecting freshwater systems.
Purpose of the Study:
- To systematically analyze the research landscape of freshwater microplastics using Citespace II.
- To identify research gaps and trends in freshwater microplastic studies.
- To explore challenges and opportunities for future research and policy development.
Main Methods:
- Bibliometric analysis using Citespace II software.
- Systematic literature review of freshwater microplastic research.
- Identification of key research areas, countries, and water bodies.
Main Results:
- Significant disparity exists between research on freshwater and marine microplastics.
- Freshwater microplastic research is concentrated in developed countries (e.g., US, Germany).
- Rivers and lakes are primary study sites; groundwater and reservoirs receive less attention.
Conclusions:
- There is a critical need to expand freshwater microplastic research, especially in developing countries.
- Addressing understudied freshwater sources is crucial for comprehensive pollution assessment.
- Developing targeted policies and mitigation strategies is essential to combat emerging freshwater microplastic pollution.
