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Updated: Jun 12, 2026

Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis

Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis

Published on: December 16, 2016

Preparing and characterizing environmentally aged microplastics.

Xinran Qiu¹, Yu Xie², Xing Li³

¹College of Natural Resources and Environment, Northwest A&F University, Shaanxi, China.

Nature Protocols

|February 17, 2026

Summary

This summary is machine-generated.

Microplastic (MP) aging in the environment is complex. A new protocol quantifies MP aging across diverse settings, aiding sustainable plastic design by understanding their environmental fate.

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Sampling and Identification of Microplastics in Groundwater

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Area of Science:

Environmental Science
Polymer Science
Biogeochemistry

Background:

Microplastics (MPs) are pervasive environmental pollutants integrated into global carbon and biochemical cycles.
Environmental factors alter MP physical and chemical properties, influencing their behavior and ecological impact.
MP aging is a complex process influenced by MP characteristics and environmental conditions.

Purpose of the Study:

To develop a standardized protocol for studying microplastic aging in various environmental settings.
To establish a quantitative method for assessing the degree of microplastic aging.
To provide mechanistic insights into microplastic aging for sustainable plastic development.

Main Methods:

A modular experimental protocol for MP aging across soil, water, air, and organisms.
Integration of analytical techniques including SEM, FTIR, and Py-GC-MS for characterization.
Development of a composite aging index (CAI) for quantitative aging assessment.

Main Results:

The protocol allows for MP aging studies over timescales of weeks to months.
Characterization of aged MPs by micromorphology, chemical changes, dissolution, and mass fraction.
Successful establishment of a quantitative aging index (CAI) with graded property assessment.

Conclusions:

The developed protocol provides a robust framework for investigating microplastic aging.
Mechanistic understanding of MP aging can inform the design of more sustainable plastics.
This research contributes to managing the environmental impact of microplastic pollution.