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Article
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Tier 2
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Original research — experimental, observational, or case-control study. Direct primary evidence.
Detection Methods
Nanoplastics
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Direct Nanoplastics Detection Below the Diffraction Limit Using Micro Raman
2023
Allan Bereczki,
Jéssica Dipold,
Anderson Zanardi de Freitas,
Niklaus Ursus Wetter
Summary
Researchers demonstrated that micro-Raman spectroscopy can directly detect polystyrene nanoplastic particles as small as 20 nm — far below the normal diffraction limit. This advances analytical capabilities for detecting the smallest nanoplastic particles in environmental samples.
Polymers
Raman spectra of polystyrene nanoparticles of 50 nm diameter were directly measured using micro-Raman spectroscopy. Data analysis demonstrated that particles as small as 20 nm could be directly measured with this simple and robust technique.