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Related Experiment Video

Updated: Nov 3, 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

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Field-Portable Microplastic Sensing in Aqueous Environments: A Perspective on Emerging Techniques.

Morgan G Blevins1,2,3,4, Harry L Allen5, Beckett C Colson1,2,6

  • 1MIT-WHOI Joint Program in Oceanography/Applied Ocean Science & Engineering, Cambridge and Woods Hole, MA 02543, USA.

Sensors (Basel, Switzerland)
|June 2, 2021
PubMed
Summary

Researchers are developing new technologies to quickly identify and measure microplastics (MPs) in water. These methods aim for field deployment, overcoming limitations of current lab-based techniques for environmental monitoring.

Keywords:
analytical chemistryaqueous solutionsenvironmentfreshwatermarine pollutionmicroplasticsoceanplastic pollutionpolymerssensorswater

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Related Experiment Videos

Last Updated: Nov 3, 2025

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Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Technology Development

Background:

  • Microplastics (MPs) are pervasive pollutants in aquatic environments globally.
  • Current methods for MP characterization are often lab-bound, requiring extensive sample preparation.
  • Existing techniques yield variable data quality and content, hindering accurate environmental assessment.

Purpose of the Study:

  • To review and demonstrate prospective technologies for microplastic measurement.
  • To focus on field-deployable solutions for rapid MP identification and quantification.
  • To assess technologies based on their data products (count, size, polymer type) and field-readiness.

Main Methods:

  • Exploration of multiple prototype systems for MP analysis.
  • Evaluation of techniques including pyrolysis-differential mobility spectroscopy and short-wave infrared imaging.
  • Demonstration of methods like Nile Red labeling, acoustophoresis, ultrasound, impedance spectroscopy, and dielectrophoresis.

Main Results:

  • Preliminary experimental results from various prototype systems are presented.
  • These systems measure diverse physical properties of microplastics.
  • The focus is on transitioning measurement techniques from laboratory settings to field applications.

Conclusions:

  • There is a critical need for rapid, accurate, and field-deployable technologies for microplastic characterization.
  • Several promising techniques are being developed to address current analytical limitations.
  • Advancing these technologies will improve environmental monitoring of microplastic pollution.