Advanced tools and methodologies for identification, characterization, and quantification of micro/nano plastics in...

Area of Science:

• Environmental Science
• Analytical Chemistry
• Materials Science

Background:

• Plastic pollution, particularly microplastics (MPs) and nanoplastics (NPs), poses significant risks to ecosystems and human health.
• Current methods for isolating, identifying, and quantifying MPs/NPs in the environment are not well-established, creating a critical research gap.

Purpose of the Study:

• To provide a comprehensive overview of current separation, identification, and quantification methods for MPs/NPs.
• To discuss recent advancements, challenges, and limitations in analytical techniques for MP/NP analysis.
• To highlight the need for continuous innovation in this field.

Main Methods:

• Separation techniques: density separation, oil separation, electrostatic separation, magnetic separation, elutriation, membrane filtration, enzymatic treatments, and sieving.
• Identification and characterization techniques: FTIR, Raman spectroscopy, SEM, LDIR, PFE, thermal analysis, electrochemical sensing, optical sensing, chromatography, and visual inspection.

Main Results:

• The review outlines various effective methods for separating MPs from environmental matrices.
• It details techniques for analyzing MP/NP polymer composition, size, morphology, and shape.
• Comparative analysis of detection limits, costs, and accessibility of different analytical tools is presented.

Conclusions:

• Effective methods exist for MP/NP separation and identification, but challenges remain.
• Further innovation in analytical tools is crucial for accurate quantification and addressing plastic pollution.
• Understanding toxicological mechanisms and regulatory frameworks is essential.