Related Experiment Video
Updated: Dec 5, 2025
Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis
Published on: December 16, 2016
Identification of polystyrene nanoplastics using surface enhanced Raman spectroscopy
Xiao-Xia Zhou1, Rui Liu2, Li-Teng Hao3
1State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P. O. Box 2871, Beijing, 100085, China; Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Research Institute of Environmental Studies at Greater Bay, Guangzhou University, Guangzhou, 510006, China.
Surface-enhanced Raman spectroscopy (SERS) can now identify trace nanoplastics in environmental samples. This new method detects tiny polystyrene plastic particles, aiding in understanding their environmental impact.
Area of Science:
- Environmental Science
- Analytical Chemistry
- Materials Science
Background:
- Micro- and nanoplastics are accumulating globally, posing risks to wildlife.
- Identifying nanoplastics in environmental samples is a significant analytical challenge.
- Polystyrene (PS) nanoplastics are prevalent and widely distributed in natural environments.
Purpose of the Study:
- To develop a novel method for identifying trace nanoplastics.
- To demonstrate the feasibility of using surface-enhanced Raman spectroscopy (SERS) for nanoplastic detection.
- To analyze the distribution and presence of polystyrene nanoplastics.
Main Methods:
- Utilized surface-enhanced Raman spectroscopy (SERS) with silver nanoparticles (AgNPs).
- Employed SERS mapping to analyze polystyrene (PS) nanoplastics on a silicon wafer.
- Tested the method's efficacy by spiking real water samples with nanoplastics.
Main Results:
- SERS successfully obtained detailed Raman spectra of PS nanoplastics when aggregated with AgNPs.
- SERS mapping visualized the distribution of PS nanoplastics, enabling quick analysis.
- The method detected plastic particles as small as approximately 50 nm in real water samples.
Conclusions:
- SERS provides a feasible approach for identifying trace nanoplastics, specifically polystyrene.
- This technique advances the ability to study nanoplastic occurrence, formation, and transport in the environment.
- The developed method is crucial for addressing the global challenge of nanoplastic pollution.
