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Updated: Dec 25, 2025

Separation and Identification of Conventional Microplastics from Farmland Soils

Separation and Identification of Conventional Microplastics from Farmland Soils

Published on: March 21, 2025

Microplastics Differ Between Indoor and Outdoor Air Masses: Insights from Multiple Microscopy Methodologies.

Emily Gaston¹, Mary Woo¹, Clare Steele¹

¹Environmental Science and Resource Management Program, 14703California State University Channel Islands, California, USA.

Applied Spectroscopy

|April 3, 2020

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What determines accuracy of chemical identification when using microspectroscopy for the analysis of microplastics?

Chemosphere·2022

Airborne microplastics are prevalent both indoors and outdoors, with indoor air containing twice the concentration of microplastics. This ubiquitous presence highlights potential new pathways for plastic pollution and human inhalation exposure.

Area of Science:

Environmental Science
Analytical Chemistry
Toxicology

Background:

Microplastic pollution (<5mm) is a growing global concern, primarily studied in water, soil, and organisms.
Airborne microplastics have been largely overlooked despite their potential environmental and health impacts.

Purpose of the Study:

To investigate the presence, characteristics, and composition of airborne microplastics inside and outside buildings.
To assess potential human inhalation exposure and new pathways for microplastic deposition into ecosystems.

Main Methods:

Air sampling was conducted inside and outside buildings in coastal California.
Microplastics were collected using glass fiber filters and analyzed via traditional microscopy, Nile red fluorescent microscopy, micro-Raman spectroscopy, and micro-Fourier transform infrared (µFT-IR) spectroscopy.

Keywords:

FT-IR Fourier transform infrared spectroscopy Nile red Pollution Raman air quality ecotoxicology inhalation microspectroscopy polymer waste

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Last Updated: Dec 25, 2025

Separation and Identification of Conventional Microplastics from Farmland Soils

Separation and Identification of Conventional Microplastics from Farmland Soils

Published on: March 21, 2025

Sampling and Identification of Microplastics in Groundwater

Sampling and Identification of Microplastics in Groundwater

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Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis

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Main Results:

Microplastics were detected in both indoor and outdoor air, with indoor air showing higher concentrations (3.3 fibers/m³, 12.6 fragments/m³) than outdoor air (0.6 fibers/m³, 5.6 fragments/m³).
Indoor microplastic fragments were smaller (58.6 µm) than outdoor fragments (104.8 µm).
Spectroscopic analysis indicated different dominant polymer types: polyvinyl chloride (PVC) indoors and polystyrene outdoors, with polyethylene (PE) present in both.

Conclusions:

Airborne microplastics are ubiquitous, penetrating indoor environments at significant concentrations.
The findings suggest airborne microplastics represent a novel route for ecosystem contamination and pose a risk for human inhalation exposure.
Further research is needed to fully understand the toxicological implications of airborne microplastic exposure.