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Related Experiment Video

Updated: May 14, 2026

Multimodal Analysis of Microplastics in Drinking Water using a Silicon Nanomembrane Analysis Pipeline
09:10

Multimodal Analysis of Microplastics in Drinking Water using a Silicon Nanomembrane Analysis Pipeline

Published on: June 13, 2025

A Dual-Laser Raman Strategy for Fast and Direct Detection and Quantification of Microplastics in Water.

Hongtaek Kim1, Yong Ju Lee2, Sangsig Kim1,3

  • 1Department of Micro Device Engineering, Korea University, Anam-ro 145, Seongbuk-gu, Seoul 02841, Republic of Korea.

Polymers
|May 13, 2026
PubMed
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A new dual-laser Raman spectroscopy method allows direct, real-time quantification of microplastics in water without pretreatment. This simple technique enhances signal intensity and improves accuracy for routine environmental monitoring.

Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Spectroscopy

Background:

  • Microplastic quantification in water is difficult due to pretreatment needs and signal instability in conventional Raman methods.
  • Existing Raman-based techniques often require filtration, drying, or complex flow systems, risking particle loss and reduced accuracy.

Purpose of the Study:

  • To develop a simple, pretreatment-free dual-laser Raman strategy for direct, real-time microplastic quantification in water.
  • To overcome challenges of particle loss and signal instability associated with traditional methods.

Main Methods:

  • A dual-laser Raman strategy using two 532 nm lasers in simultaneous backscattering and transmission geometries.
  • Mitigation of spatial variations in Raman scattering cross-sections by integrating both geometries.
Keywords:
Raman spectroscopybackscatteringdrinking waterreal-timetransmission

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Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris
05:31

Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris

Published on: July 28, 2018

Related Experiment Videos

Last Updated: May 14, 2026

Multimodal Analysis of Microplastics in Drinking Water using a Silicon Nanomembrane Analysis Pipeline
09:10

Multimodal Analysis of Microplastics in Drinking Water using a Silicon Nanomembrane Analysis Pipeline

Published on: June 13, 2025

Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris
05:31

Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris

Published on: July 28, 2018

Main Results:

  • Enhanced Raman intensity by 1.5-fold (backscattering) and threefold (transmission) compared to single geometries (p < 0.001).
  • Robust real-time detection with 0.1 s temporal resolution.
  • Accurate quantification of polystyrene, polyamide 6, and polyvinyl chloride particles without false positives.

Conclusions:

  • The proposed dual-laser Raman strategy offers a practical approach for routine microplastic monitoring in water.
  • Simplicity and quantitative reliability are prioritized, making it suitable for drinking water and industrial systems.