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Related Concept Videos

Sampling Methods: Sample Types01:18

Sampling Methods: Sample Types

Sampling materials are classified into three main types: solid, liquid, and gas.
Solid samples include a variety of substances, such as sediments from water bodies, soil, metals, and biological tissues. Two standard methods for extracting sediments from water bodies are grab sampling and piston coring. Grab sampling involves using a device to collect a discrete sediment sample from the bottom of a water body with minimal disturbance. Grab samples do not always represent the entire area due to...

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Updated: Jun 23, 2026

Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis
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A Flow-through Passive Sampler for Microplastics in Air.

Huike Dong1,2, Xiaoping Wang1,2,3, Li Xu4,5

  • 1State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment (TPESRE), Institute of Tibetan Plateau Research, Chinese Academy of Sciences (CAS), Beijing100101, China.

Environmental Science & Technology
|January 17, 2023
PubMed
Summary
This summary is machine-generated.

A new passive air sampler effectively measures airborne microplastics (MP) without needing much power. This innovation allows for accurate MP concentration data, crucial for understanding transport and health risks in remote areas.

Keywords:
MP characteristicsatmospheric MPflow-through samplerhigh efficiencysampling rate

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Area of Science:

  • Environmental Science
  • Atmospheric Chemistry
  • Analytical Chemistry

Background:

  • Airborne microplastics (MP) are increasingly recognized as ubiquitous environmental contaminants.
  • Accurate atmospheric MP concentrations are vital for assessing long-range transport potential and human inhalation risks.
  • Existing active sampling methods often require significant power, limiting their use in remote locations.

Purpose of the Study:

  • To adapt and validate a flow-through passive sampler for collecting airborne MP in environments with limited power.
  • To assess the sampler's ability to provide accurate and reproducible atmospheric MP concentration and composition data.
  • To enable large-scale, high-temporal resolution air monitoring for microplastics.

Main Methods:

  • A flow-through passive sampler was modified with an integrated glass fiber filter.
  • Two sizes of the passive sampler (20 cm and 10 cm diameter) were field-tested.
  • Co-deployment with a conventional high-volume air sampler was performed for comparative analysis.
  • Sampling volume estimation was achieved by correlating external and internal wind speed measurements.

Main Results:

  • The adapted passive sampler provided atmospheric MP concentrations and compositions comparable to active sampling methods.
  • Accurate sampling volumes were successfully estimated using wind speed correlations.
  • The larger passive sampler (20 cm) demonstrated reproducibility and quantitative accuracy.
  • The passive sampler is suitable for sites with limited or unreliable power supply.

Conclusions:

  • The developed flow-through passive sampler offers a viable solution for monitoring airborne microplastics in power-limited settings.
  • This technology facilitates more extensive and temporally resolved atmospheric MP monitoring networks.
  • The findings contribute to a better understanding of microplastic distribution and associated risks.