A novel method enabling the accurate quantification of microplastics in the water column of deep ocean

Liu, Kai; Zhang, Feng; Song, Zhangyu; Zong, Changxing; Wei, Nian; Li, Daoji

doi:10.1016/j.marpolbul.2019.07.008

Cited by 46 publications

(30 citation statements)

References 24 publications

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“…Current best practice for sampling subsurface microplastic requires specialised underwater pumps to filter large water volumes. 26,27 Macroplastics can be sampled using subsurface trawls 28 , and this might be a useful approach given the apparently rapid sinking 23,29,30 and possible mid-water accumulation 31 of near-neutrally buoyant macroplastics such as plastic bags and food wrappers.…”

Section: Debris Floating At Sea and In The Water Columnmentioning

confidence: 99%

Monitoring marine plastics – will we know if we are making a difference?

Ryan

Pichegru

Perold³

et al. 2020

S. Afr. J. Sci.

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In the context of marine anthropogenic debris management, monitoring is essential to assess whether mitigation measures to reduce the amounts of waste plastic entering the environment are being effective. In South Africa, baselines against which changes can be assessed include data from the 1970s to the 1990s on microplastics floating at sea, on macro- and microplastic beach debris, and interactions with biota. However, detecting changes in the abundance of microplastics at sea is complicated by high spatial and temporal heterogeneity in net samples. Beach debris data are easier to gather, but their interpretation is complicated by the dynamic nature of debris fluxes on beaches and the increase in beach cleaning effort over time. Sampling plastic ingested by biota is a powerful approach, because animals that retain ingested plastic for protracted periods integrate plastics over space and time, but there are ethical issues to using biota as bioindicators, particularly for species that require destructive sampling (e.g. turtles, seabirds). Bioindicators could be established among fish and invertebrates, but there are technical challenges with sampling microplastics smaller than 1 mm. Fine-scale debris accumulation on beaches provides an index of macroplastic abundance in coastal waters, and offers a practical way to track changes in the amounts and composition of debris in coastal waters. However, upstream flux measures (i.e. in catchments, rivers and storm-water run-off) provide a more direct assessment of mitigation measures for land-based sources. Similarly, monitoring refuse returned to port by vessels is the best way to ensure compliance with legislation prohibiting the dumping of plastics at sea. Significance: • Monitoring is required to assess whether mitigation measures to reduce waste plastics at sea are making a difference. • Monitoring the leakage of plastic from land-based sources is best addressed on land (e.g. in storm drains and river run-off) before the plastic reaches the sea. • Illegal dumping from ships is best addressed by monitoring the use of port waste reception facilities. • Sampling plastic ingested by biota is a powerful approach, using fish and invertebrates as bioindicators for larger microplastic fragments.

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Section: Debris Floating At Sea and In The Water Columnmentioning

confidence: 99%

Monitoring marine plastics – will we know if we are making a difference?

Ryan

Pichegru

Perold³

et al. 2020

S. Afr. J. Sci.

View full text Add to dashboard Cite

show abstract

“…By categorizing by sampling methodology, these studies were generally divided into bulkwater sampling (Bagaev et al, 2017;Bagaev et al, 2018;Cordova et al, 2018;Dai et al, 2018;Di Mauro et al, 2017;Ding et al, 2019;Kanhai et al, 2018;Peng et al, 2018), net sampling (Lattin et al, 2004;Lenaker et al, 2019;) and submersible pumps/in-situ sampling (Choy et al, 2019;Liu et al, 2019;Song et al, 2018;Zobkov et al, 2019) (Fig. 1).…”

Section: Sampling Methodologies and Sample Analysesmentioning

confidence: 99%

“…The third sampling protocols for MPs in water columns included submerged pumps (Ng and Obbard, 2006;Song et al, 2019;Zobkov et al, 2019), sediment traps (Ballent et al, 2016;Reineccius et al, 2020), and in-situ filtration devices (Choy et al, 2019;Liu et al, 2019;Tekman et al, 2020). In addition, an underway water intake system was also used to collect subsurface seawaters at a specific depth (Lusher et al, 2015;Ryan et al, 2020).…”

Section: Submersible Pumps and In-situ Collectionmentioning

confidence: 99%

“…1D). Now, it has been also successfully applied these pumps to water samples from substance waters in a coastal zone (Song et al, 2019;Zobkov et al, 2019). Using this method, Song et al (2019) sampled 100 L of water from various depths (0.20-58 m) at eight sites in Korean coastal waters.…”

Section: Submersible Pumps and In-situ Collectionmentioning

confidence: 99%

“…Now, it has been also successfully applied these pumps to water samples from substance waters in a coastal zone (Song et al, 2019;Zobkov et al, 2019). Using this method, Song et al (2019) sampled 100 L of water from various depths (0.20-58 m) at eight sites in Korean coastal waters. In addition, a modified submerged pump by Zobkov et al (2019) was also used to collect water from the water column of the Baltic Sea.…”

Section: Submersible Pumps and In-situ Collectionmentioning

confidence: 99%

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