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Development of analytical methods for the characterization (particle size determination, identification, and quantification) of the micro- and nanoscale plastic debris in the environment is a quickly emerging field and has gained considerable attention, not only within the scientific community, but also on the part of policy makers and the general public. In this Trends paper, the importance of developing and further improving analytical methodologies for the detection and characterization of sub-20-μm-range microplastics and especially nanoplastics is highlighted. A short overview of analytical methodologies showing considerable promise for the detection and characterization of such micro- and nanoscale plastic debris is provided, with emphasis on recent developments in mass spectrometry (MS)-based analytical methods. Novel hyphenated techniques combining the strengths of different analytical methods, such as field flow fractionation and MS-based detection, may be a way to adequately address the smallest fractions in plastic debris analysis, making such approaches worthwhile to be further explored.
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http://dx.doi.org/10.1007/s00216-020-02898-w | DOI Listing |
J Anal At Spectrom
September 2025
Department of Environmental Systems Science, ETH Zurich Universitätstrasse 16 8092 Zurich Switzerland.
Plastic pollution in marine environments poses ecological risks, in part because plastic debris can release hazardous substances, such as metal-based additives. While microplastics have received considerable attention as vectors of contaminants, less is known about larger macroplastics and their role in the spatial and temporal redistribution of substances. In this study, pristine, store-bought plastic items and macroplastics recovered from the North Pacific Subtropical Gyre (NPSG) were analysed using Fourier-Transform Infrared Spectroscopy (FTIR) to identify polymer types, and bulk acid digestion followed by Inductively Coupled Plasma Mass Spectrometry (ICP-MS) for total metal quantification.
View Article and Find Full Text PDFJ Vis Exp
August 2025
School of Marine and Atmospheric Science, Stony Brook University.
The protocol presented here enables the quantification of microplastics (MPs) as small as ~1 µm in diameter, accurate identification of polymer types, and estimation of particle volume, critically allowing for the calculation of MP mass. Representative results from samples collected in the Great South Bay (GSB), NY, showed that particles within the 1-6 µm equivalent spherical diameter (ESD) range were the most abundant, with approximately 75% of particles measuring less than 5 µm. Notably, the pre-sieving step failed to yield any particles larger than 60 µm, suggesting that large MPs were rare at the coastal sites sampled.
View Article and Find Full Text PDFChemosphere
September 2025
Azerbaijan National Academy of Sciences, Institute of Geography, Baku, AZ1073, Azerbaijan.
This study presents the first integrated assessment of plastic pollution at the Kura River delta, where the river enters the hydrologically enclosed Caspian Sea. We applied a modular toolbox comprising four complementary components: high-resolution hydrodynamic modeling to predict debris convergence zones, UAV-based mapping to survey shoreline conditions, automated object-based image analysis for debris detection and classification, and standardized field monitoring by trained community participants for ground-truthing and source identification. Using this framework, we identified debris accumulation hotspots and developed a replicable approach for assessing plastic pollution in semi-enclosed systems.
View Article and Find Full Text PDFData Brief
October 2025
Aquatic Science Program, Faculty of Fisheries and Marine Science, Sam Ratulangi University, Jl. Kampus UNSRAT Bahu, Manado 95115, North Sulawesi, Indonesia.
Data is presented on the macro and meso size, weight, and number of items for a variety of beach litter types collected from Manado Bay, Northern Sulawesi, Indonesia, which lies within the Coral Triangle. The data, both raw and partly processed, were collected over 5 years (2018 to 2022) using the internationally standard method for monitoring marine debris, which has been adopted by Indonesia. The classification is based on 9 material types: (1) plastics (PL), (2) foamed plastics (FP), (3) cloth (CL), (4) glass and ceramics (GC), (5) metal (ME), (6) other type of litter (OT), (7) paper and cardboard (PC), (8) rubber (RB), and (9) wood (WD), and further broken down into subcategories.
View Article and Find Full Text PDFFEMS Microbiol Ecol
September 2025
Institute of Microbiology, Leibniz University Hannover, 30419 Hannover, Germany.
Unmanaged plastic waste in Sub-Saharan Africa pollutes large areas and degrades into microplastics. Surfaces of microplastic are colonized by bacteria and fungi, resulting in the plastisphere. Plastispheres from high population hotspots on the African continent enrich pathogenic fungi, posing a potential threat to human health.
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