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Related Experiment Video

Updated: May 28, 2026

Sampling and Identification of Microplastics in Groundwater
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Sampling and Identification of Microplastics in Groundwater

Published on: November 7, 2025

A portable platform for polyethylene microplastics quantification using an Arduino automatic system.

Shijing Yang1, Yajing Sun1, Yaming Yang2

  • 1School of Chemical Engineering and Technology, Hebei Key Laboratory of Functional Polymers, Hebei University of Technology, Xiping Road No. 5340, Beichen District, Tianjin, 300401, China.

Analytica Chimica Acta
|May 26, 2026
PubMed
Summary
This summary is machine-generated.

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A new portable fluorescence sensor rapidly quantifies polyethylene microplastics (PE MPs) in environmental samples. This low-cost, user-friendly device uses boron-doped carbon dots for detection, offering a significant advancement in microplastic analysis.

Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Materials Science

Background:

  • Microplastics (MPs) pose a significant threat to human health due to their widespread presence and persistence.
  • Developing convenient and effective analytical methods for MP detection is crucial.

Purpose of the Study:

  • To develop a low-cost, portable sensing platform for the rapid quantification of polyethylene (PE) microplastics (MPs) in environmental samples.
  • To create a user-friendly and field-deployable assay for microplastic analysis.

Main Methods:

  • A portable sensing platform was constructed using an ultraviolet light module, color sensor, LCD, and Arduino microcontroller in a 3D-printed box.
  • Polyethylene MPs were stained with boron-doped carbon dots (B-CDs), producing a "turn-on" yellow fluorescence detected by the color sensor.
Keywords:
ArduinoCarbon dotsDetectionFluorescenceMicroplastics

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Last Updated: May 28, 2026

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  • Vacuum filtration was used for sample preparation, and the decrease in blue RGB value correlated with PE MP mass.

    • Main Results:

    • Linear calibration curves were obtained for PE MPs within a mass range of 0.15-1.00 mg and particle sizes of 2-5 μm.
    • The developed platform enabled rapid quantification of PE MPs.
    • PE MP content was directly displayed on the integrated liquid crystal display.

    Conclusions:

    • The portable fluorescence sensor offers an inexpensive, user-friendly, and field-deployable solution for microplastic quantification.
    • This assay eliminates the need for complex instrumentation and post-processing, advancing portable microplastic sensing capabilities.