The DOI matches its Crossref record; 11 of the 11 references it cites were found in a registry or an index.
A small-scale, portable method for extracting microplastics from marine sediments
Open accessAbstract
Microplastics (plastic particles, 0.1 μm–5 mm in size) are widespread marine pollutants, accumulating in benthic sediments and shorelines the world over. To gain a clearer understanding of microplastic availability to marine life, and the risks they pose to the health of benthic communities, ecological processes and food security, it is important to obtain accurate measures of microplastic abundance in marine sediments. To date, methods for extracting microplastics from marine sediments have been disadvantaged by complexity, expense, low extraction efficiencies and incompatibility with very fine sediments. Here we present a new, portable method to separate microplastics from sediments of differing types, using the principle of density floatation. The Sediment-Microplastic Isolation (SMI) unit is a custom-built apparatus which consistently extracted microplastics from sediments in a single step, with a mean efficiency of 95.8% (±SE 1.6%; min 70%, max 100%). Zinc chloride, at a density of 1.5 g cm−3, was deemed an effective and relatively inexpensive floatation media, allowing fine sediment to settle whilst simultaneously enabling floatation of dense polymers. The method was validated by artificially spiking sediment with low and high density microplastics, and its environmental relevance was further tested by extracting plastics present in natural sediment samples from sites ranging in sediment type; fine silt/clay (mean size 10.25 ± SD 3.02 μm) to coarse sand (mean size 149.3 ± SD 49.9 μm). The method presented here is cheap, reproducible and is easily portable, lending itself for use in the laboratory and in the field, eg. on board research vessels. By employing this method, accurate estimates of microplastic type, distribution and abundance in natural sediments can be achieved, with the potential to further our understanding of the availability of microplastics to benthic organisms.
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Cites
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The deep sea is a major sink for microplastic debris
Woodall, L. C., Sanchez-Vidal, A., Canals, M., Paterson, G. L. J., Coppock, R., Sleight, V., Calafat, A., Rogers, A. D., Narayanaswamy, B. E., & Thompson, R. C. (2014) · Royal Society Open Science · doi:10.1098/rsos.140317 · Cited by 1,946 · cited 5×
“Highly impacted coastal sediments can contain up to 3% microplastics by weight (Carson et al., 2011), and Woodall et al. (2014) conservatively estimates that 4 billion fibres km 2 are littering Indian Ocean seamount sediments.”
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Self-citationEarly microbial biofilm formation on marine plastic debris
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Interactions between microplastics and phytoplankton aggregates: Impact on their respective fates
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Cited by
Chemical Analysis of Microplastics and Nanoplastics: Challenges, Advanced Methods, and Perspectives
Ivleva, N. P. (2021) · Chemical Reviews · doi:10.1021/acs.chemrev.1c00178 · Cited by 1,172
Hurley, R. R., Lusher, A. L., Olsen, M., & Nizzetto, L. (2018) · Environmental Science & Technology · doi:10.1021/acs.est.8b01517 · Cited by 992
Veerasingam, S., Ranjani, M., Venkatachalapathy, R., Bagaev, A., Mukhanov, V., Litvinyuk, D., Mugilarasan, M., Gurumoorthi, K., Guganathan, L., Aboobacker, V. M., et al. (2021) · Critical Reviews in Environmental Science and Technology · doi:10.1080/10643389.2020.1807450 · Cited by 561
Microplastics: An overview on separation, identification and characterization of microplastics
Tirkey, A., & Upadhyay, L. S. B. (2021) · Marine Pollution Bulletin · doi:10.1016/j.marpolbul.2021.112604 · Cited by 445
Role of Marine Snows in Microplastic Fate and Bioavailability
Porter, A., Lyons, B. P., Galloway, T. S., & Lewis, C. (2018) · Environmental Science & Technology · doi:10.1021/acs.est.8b01000 · Cited by 419
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Metadata
- Authors
- Coppock, R. L., Cole, M., Lindeque, P. K., Queirós, A. M., & Galloway, T. S.
- Venue
- Environmental Pollution
- Publisher
- Elsevier BV
- Published
- 2017-11
- Volume
- 230
- Pages
- 829-837
- ISSN
- 0269-7491 (ISSN-L)
- OpenAlex
- W2738098134
- Cited by
- 666
- References
- 11
- FWCI
- 13.37
- Type
- journal article
- Language
- en
- Open access
- hybrid
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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