Cited by 1,937Microplastics and Plastic PollutionPharmaceutical and Antibiotic Environmental ImpactsOil Spill Detection and Mitigation

The DOI matches its Crossref record; 37 of the 37 references it cites were found in a registry or an index; none of the 10 sources its claims cite is checked for support yet.

Microplastic pollution in the surface waters of the Laurentian Great Lakes

Open access
Eriksen, Marcus, Mason, Sherri, Wilson, Stiv, Box, Carolyn, Zellers, Ann, Edwards, William, Farley, Hannah, Amato, Stephen·2013·Marine Pollution Bulletin

Abstract

Neuston samples were collected at 21 stations during an ~700 nautical mile (~1300 km) expedition in July 2012 in the Laurentian Great Lakes of the United States using a 333 μm mesh manta trawl and analyzed for plastic debris. Although the average abundance was approximately 43,000 microplastic particles/km², station 20, downstream from two major cities, contained over 466,000 particles/km², greater than all other stations combined. SEM analysis determined nearly 20% of particles less than 1 mm, which were initially identified as microplastic by visual observation, were aluminum silicate from coal ash. Many microplastic particles were multi-colored spheres, which were compared to, and are suspected to be, microbeads from consumer products containing microplastic particles of similar size, shape, texture and composition. The presence of microplastics and coal ash in these surface samples, which were most abundant where lake currents converge, are likely from nearby urban effluent and coal burning power plants.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

Neuston sampling across Lakes Superior, Huron, and Erie in July 2012 found microplastic pollution at nearly all 21 stations, with an average abundance of 43,157 particles/km² and extreme concentrations in western Lake Erie. SEM/EDS showed that many particles visually identified as microplastic were actually coal ash, while multi-colored spheres were suspected to be consumer-product microbeads.

Key findings

  • All 21 net tows except sample 13 contained plastic; adjusted average abundance was 43,157 particles/km², with counts ranging from 0 to over 450,000 particles/km².
  • Sample 20 contained 1,101 plastic particles, reported as 466,305 particles/km² in Table 1 (463,423 particles/km² in the results text), greater than all other samples combined. Lake Erie samples accounted for ~90% of all pelagic plastic debris, and samples 20 and 21 alone contained 85% of all microplastic particles collected.
  • SEM/EDS determined that nearly 20% of particles <1 mm initially identified as microplastic were aluminum silicate from coal ash; 8 of 21 samples contained coal/fly ash, with an average contribution of 20% within the 0.355–1 mm size class, and samples 20 and 21 contained 28% and 27% aluminum silicate, respectively.
  • The 0.355–0.999 mm size class accounted for 81% of total particle count; pellets and fragments were far more abundant than other particle types. Multi-colored spheres were compared to polyethylene microbeads from two national facial cleanser brands and found to be similar in shape, size, color, and elemental composition.

Methods

  • During a ~700 nautical mile expedition from 11–31 July 2012, 21 neuston samples were collected in Lakes Superior (5), Huron (8), and Erie (8) using a 333 µm mesh manta trawl towed for 60 min at 2.0 knots.
  • Samples were preserved in 70% isopropyl alcohol, rinsed in salt water, sorted under a dissecting microscope, and separated into three size classes (0.355–0.999 mm, 1.00–4.749 mm, >4.75 mm) and five categories (fragment, foamed polystyrene, line, pellet, film); abundance per km² was calculated from tow length and trawl width.
  • All particles <1 mm from each sample were examined by SEM/EDS for elemental composition; suspected microbeads were compared with two national facial cleanser products, and a fraction of sample 21 was soaked in 2 M HCl for 24 h to remove biofilm before SEM imaging.

Limitations

  • The paper states that visual observation alone is insufficient to separate microplastic from other debris, as shown by the misidentification of coal ash particles.
  • Evident from the text: SEM/EDS analysis was applied only to particles <1 mm, while particles >1 mm were identified visually and excluded from SEM/EDS.
  • Evident from the text: the survey covered only three of the five Great Lakes during a single July 2012 expedition, with high spatial variability; the microbead source attribution is suspected based on similarity to consumer products rather than confirmed by tracing.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1016/j.marpolbul.2013.10.007

Cites

37 of 37 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Verification

Claims the paper makes

13 Own result · 9 Own interpretation · 4 Sources not found · 4 No full text of the sources · 3 Own method · 1 Not checked yet · 1 No basis given

Show all 22 claims

  • It may state two separate claims as one. 10
  • Probably not a substantial claim. 4
13 of 13
  • The paper relies on this without support.

    Few, if any, wastewater treatment facilities capture all floating, non-biodegradable particulate of 0.5 mm size or smaller.

    “but few, if any, wastewater treatment facilities capture all floating, non-biodegradable particulate of 0.5 mm size or smaller.”
  • The paper relies on this without support.

    Particles larger than 1 mm can be reliably identified as plastic by visual observation without SEM/EDS confirmation.

    “Particles >1 mm were more easily identified as plastic, and therefore excluded from SEM/EDS analysis.”
2 of 2

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

3 of 3

Citations

Cites

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Metadata

Authors
Eriksen, M., Mason, S., Wilson, S., Box, C., Zellers, A., Edwards, W., Farley, H., & Amato, S.
Affiliations
  • University of California, Los Angeles (US)
  • SUNY Fredonia (US)
  • Niagara University (US)
Corresponding author
Eriksen, Marcus
Venue
Marine Pollution Bulletin
Publisher
Elsevier BV
Published
2013-12
Volume
77
Issue
1-2
Pages
177-182
ISSN
0025-326X (ISSN-L)
OpenAlex
W2150503350
Cited by
1,937
References
36
Citations by year
2026: 117 · 2025: 160 · 2024: 212 · 2023: 219 · 2022: 227 · 2021: 228 · 2020: 226 · 2019: 172 · 2018: 123 · 2017: 105 · 2016: 74 · 2015: 50 · 2014: 22
FWCI
36.56
Type
journal article
Language
en
Open access
Locations
  • Marine Pollution Bulletin (publishedVersion)
  • PubMed (publishedVersion)
  • ScholarSphere (Penn State Libraries) (submittedVersion)
Funders
River Foundation
Topics
  • Physical Sciences › Environmental Science › Pollution › Microplastics and Plastic Pollution
  • Physical Sciences › Environmental Science › Pollution › Pharmaceutical and Antibiotic Environmental Impacts
  • Physical Sciences › Environmental Science › Pollution › Oil Spill Detection and Mitigation
Keywords
microplastic pollution, Great Lakes, neuston, surface water, microbeads, coal ash, aluminum silicate, urban effluents, coal-fired power plants, lake currents
MeSH terms
Environmental Monitoring, Plastics, United States, Water Pollutants, Chemical, Lakes

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