Considerations on salts used for density separation in the extraction of microplastics from sediments

Cutroneo, Laura; Reboa, Anna; Geneselli, Irene; Capello, Marco

doi:10.1016/j.marpolbul.2021.112216

Cited by 86 publications

(37 citation statements)

References 82 publications

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“…3), with recovery efficiencies of 36.7 ± 3% for PVC, 71.7± 3% for PET, 90± 7% for PP, 93.3± 2% for HDPE, 95 ± 5% for PE and 96.7 ± 3% for PS, NaCl satisfies our criteria and can be considered suitable for use in the density separation step protocols for developing countries (Strady et al, 2021). Recently, NaCl salt has become increasingly used worldwide for extracting MPs from riverine sediment samples (Cutroneo et al, 2021) and marine sediments (Phuong et al, 2021). However, repeating the density separation step at least three times on the same sample has been shown to improve the MP recovery efficiency, even for denser ones, such as PVC (Horton et al, 2017).…”

Section: Choosing a Solution Adapted To The Local Contextmentioning

confidence: 67%

Selection of a density separation solution to study microplastics in tropical riverine sediment

Duong

Nguyen

et al. 2022

Environ Monit Assess

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critical issue. It is necessary to identify the fate and sources of MPs in the environment, minimise their release and adverse effects. Compared to marine sediments, standardised methods for extracting and estimating the amount of MPs in freshwater sediments are relatively limited. The present study focuses on MP recovery efficiency of four commonly used salt solutions (NaCl, NaI, CaCl 2 and ZnCl 2 ) for isolating MPs during the density separation step from freshwater sediment.

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Section: Choosing a Solution Adapted To The Local Contextmentioning

confidence: 67%

Selection of a density separation solution to study microplastics in tropical riverine sediment

Duong

Nguyen

et al. 2022

Environ Monit Assess

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“…Briefly, samples of filtered water were dried for 72–96 h at 50 °C before being treated with a highly saturated NaCl solution (1.2 g cm −3 ). It was necessary to repeat the separation process six times (please see QA/QC section for microplastic recovery test) due to the possibility of variation in the extraction of high-density microplastics when NaCl is used ( Cutroneo et al, 2021 ; Li et al, 2019 ). A 50 ml Pyrex test tube was filled with the samples, then dried in an oven at 50 °C for 48 h within sterile conditions.…”

Section: Methodsmentioning

confidence: 99%

Seasonal heterogeneity and a link to precipitation in the release of microplastic during COVID-19 outbreak from the Greater Jakarta area to Jakarta Bay, Indonesia

Cordova

Ulumuddin

Purbonegoro

et al. 2022

Marine Pollution Bulletin

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“…As for other substances, the cost and consequent toxicity of the solutions should be considered before use. After the solution is added, the lower density polymer particles float to the top of the solution due to shaking and settling [ 12 , 106 , 107 ].…”

Section: Methods Of Determination Of Microplastics In Watermentioning

confidence: 99%

Disparities in Methods Used to Determine Microplastics in the Aquatic Environment: A Review of Legislation, Sampling Process and Instrumental Analysis

Halfar

Brožová

Čabanová

et al. 2021

IJERPH

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Plastic particles smaller than 5 mm, i.e., microplastics, have been detected in a number of environments. The number of studies on microplastics in marine environments, fresh water, wastewater, the atmosphere, and the human body are increasing along with a rise in the amounts of plastic materials introduced into the environment every year, all contributing to a range of health and environmental issues. Although the use of primary microplastics has been gradually reduced by recent legislation in many countries, new knowledge and data on these problems are needed to understand the overall lifecycle of secondary microplastics in particular. The aim of this review is to provide unified information on the pathways of microplastics into the environment, their degradation, and related legislation, with a special focus on the methods of their sampling, determination, and instrumental analysis. To deal with the health and environmental issues associated with the abundance of microplastics in the environment, researchers should focus on agreeing on a uniform methodology to determine the gravity of the problem through obtaining comparable data, thus leading to new and stricter legislation enforcing more sustainable plastic production and recycling, and hopefully contributing to reversing the trend of high amounts of microplastics worldwide.

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Considerations on salts used for density separation in the extraction of microplastics from sediments

Cited by 86 publications

References 82 publications

Selection of a density separation solution to study microplastics in tropical riverine sediment

Selection of a density separation solution to study microplastics in tropical riverine sediment

Seasonal heterogeneity and a link to precipitation in the release of microplastic during COVID-19 outbreak from the Greater Jakarta area to Jakarta Bay, Indonesia

Disparities in Methods Used to Determine Microplastics in the Aquatic Environment: A Review of Legislation, Sampling Process and Instrumental Analysis

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