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Related Experiment Video

Updated: Nov 25, 2025

Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis
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Microplastics in the Black Sea sediments.

Alessandra Cincinelli1, Costanza Scopetani2, David Chelazzi3

  • 1Department of Chemistry "Ugo Schiff", University of Florence, 50019, Sesto Fiorentino, Florence, Italy; Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), 50019, Sesto Fiorentino, Florence, Italy; National Interuniversity Consortium for Environmental Sciences (CINSA), Florence/Venice, Italy.

The Science of the Total Environment
|December 20, 2020
PubMed
Summary
This summary is machine-generated.

Microplastics are prevalent in Black Sea sediments, with polyethylene and polypropylene being the most common types found. This study introduces a new method for identifying these pollutants in marine environments.

Keywords:
Black SeaFT-IRMarine pollutionMicroplasticSediment

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Area of Science:

  • Environmental Science
  • Marine Biology
  • Analytical Chemistry

Background:

  • Microplastic pollution is a growing global concern, impacting marine ecosystems.
  • Sediments act as a sink for microplastics, accumulating them from various sources.
  • Limited data exists on microplastic occurrence in the deep-sea environment of the Black Sea.

Purpose of the Study:

  • To determine the occurrence, morphology, and identification of microplastics in Black Sea sediments.
  • To evaluate a novel non-invasive method for microplastic identification using FTIR 2D imaging.
  • To assess microplastic distribution across different depths and locations within the Black Sea.

Main Methods:

  • Collection of sediment samples from various depths (22-2131 m) in the Black Sea.
  • Application of a non-invasive method: supernatant filtration after mixing sediment with saturated NaCl solution.
  • Identification of polymers using Fourier-Transform Infrared (FTIR) 2D imaging.

Main Results:

  • Microplastics (MPs) were detected in 83% of sediment samples, with an average abundance of 106.7 items/kg.
  • The North-Western shelf showed significantly higher MP pollution (10x) compared to deep-sea sediments.
  • Polyethylene and polypropylene were the most abundant polymers; fibers were the dominant microplastic type, with black, blue, and clear being the most frequent colors.

Conclusions:

  • The FTIR 2D imaging method is effective for identifying common microplastics like polyethylene and polypropylene, though challenges exist with certain substrates.
  • Microplastic contamination is widespread in Black Sea sediments, with notable variations in abundance based on location and depth.
  • Fibers constitute the primary form of microplastic pollution in these sediments, highlighting the significance of textile-related sources.