A novel, density-independent and FTIR-compatible approach for the rapid extraction of microplastics from aquatic sediments

Crichton, Ellika M.; Noël, Marie; Gies, Esther A.; Ross, Peter S.

doi:10.1039/c6ay02733d

Cited by 315 publications

(162 citation statements)

References 22 publications

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“…Earlier the cost of the original MPSS was estimated in tens of thousands of dollars (Crichton et al ), but reproducing cost of our version of MPSS together with work and materials in our conditions was estimated at less than one thousand dollars. Operating supplies and chemical reagents are cheap, widely spread, and easily available for scientific institutions.…”

Section: Discussionmentioning

confidence: 90%

Evaluation of the Munich Plastic Sediment Separator efficiency in extraction of microplastics from natural marine bottom sediments

Zobkov

Esiukova

2017

Limnology & Ocean Methods

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The Munich Plastic Sediment Separator (MPSS), proposed by Imhof et al. (), showed its high efficiency in extracting microplastics (MPs) from natural sediment samples preliminarily cleaned and then enriched by MPs in laboratory. We tested the efficiency of the MPSS, assembled at the Atlantic Branch of P.P.Shirshov Institute of Oceanology (Kaliningrad), using unprepared natural bottom deposits of different types collected in the Baltic Sea. The tests that were performed included spikes of sediments with artificial reference particles (ARPs) and the sediment samples analyses with two separate methods of extraction and determination of MPs content in residuals of MPSS. While the ARP extraction efficiency from natural sediments by the MPSS was really high (97.1% ± 2.6%; p = 0.05; n = 14; confidence interval, t‐distribution), the extraction efficiency of marine MPs was considerably lower (13–39%) than that obtained with a modification of the method previously published by NOAA. The remaining marine MPs were found in the spoil dump and in the bulk solution fractions of the separator, indicating that MPs were not perfectly cleaned from sediment particles, probably, due to presence of organic matter. It is concluded that the MPSS application for quantitative MPs analysis requires further testing and elaboration of standardized extraction procedures.

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Section: Discussionmentioning

confidence: 90%

Evaluation of the Munich Plastic Sediment Separator efficiency in extraction of microplastics from natural marine bottom sediments

Zobkov

Esiukova

2017

Limnology & Ocean Methods

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“…Another density based technique to separate MPs from sediment matrix is elutriation/fluidization, where water or air is pumped through the fluid column containing the sample and water or a salt solution (Claessens et al 2013;Nuelle et al 2014;Zhu 2015;Kedzierski et al 2016). Recently, a non-density based extraction approach with canola oil has been developed by Crichton et al (2017). The approach makes use of the oleophilic properties of MPs.…”

Section: Extraction Techniquesmentioning

confidence: 99%

“…The approach makes use of the oleophilic properties of MPs. So far it has only been tested with MPs larger than 500 μm, but showed high recovery rates of 96% (Crichton et al 2017). When choosing one of the available methods, factors like sample volume or mass, time needed, costs, safety, toxicity, and extraction efficiency have to be considered.…”

Section: Extraction Techniquesmentioning

confidence: 99%

“…For settling, the span depends on the density gradient between MPs and liquid as well as the length of the fluidization column. Furthermore, the settling times have to be adjusted to the solutions used since particles rise and settle more slowly in more viscous solutions like CaCl 2 or ZnCl 2 (Crichton et al 2017).…”

Section: Extraction Techniquesmentioning

confidence: 99%

“…These spectra can further be compared to a database of reference spectra allowing for the reliable identification of different polymer types. FTIR spectroscopy can be used in different modes, namely transmission Käppler et al 2016;Mintenig et al 2017;Primpke et al 2017b), reflection (Harrison et al 2012;Vianello et al 2013;Tagg et al 2015) and attenuated total-reflectance (ATR) (Song et al 2015;Käppler et al 2016;Crichton et al 2017;Imhof et al 2017;Wagner et al 2017). To measure very small particles FTIR spectroscopy can be coupled to microscopy (μFTIR) and be used in all three modes as well (Ivleva et al 2016;Shim et al 2017).…”

Section: Microplastics Identificationmentioning

confidence: 99%

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Microplastics in Aquatic Systems – Monitoring Methods and Biological Consequences

Hamm

Lorenz

Piehl

2018

YOUMARES 8 – Oceans Across Boundaries: Learning From Each Other

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Microplastic research started at the turn of the millennium and is of growing interest, as microplastics have the potential to affect a whole range of organisms, from the base of the food web to top predators, including humans. To date, most studies are initial assessments of microplastic abundances for a certain area, thereby generally distinguishing three different sampling matrices: water, sediment and biota samples. Those descriptive studies are important to get a first impression of the extent of the problem, but for a proper risk assessment of ecosystems and their inhabitants, analytical studies of microplastic fluxes, sources, sinks, and transportation pathways are of utmost importance. Moreover, to gain insight into the effects microplastics might have on biota, it is crucial to identify realistic environmental concentrations of microplastics. Thus, profound knowledge about the effects of microplastics on biota is still scarce. Effects can vary regarding habitat, functional group of the organism, and polymer type for example, making it difficult to find quick answers to the many open questions. In addition, microplastic research is accompanied by many methodological challenges that need to be overcome first to assess the impact of microplastics on aquatic systems. Thereby, a development of standardized operational protocols (SOPs) is a prerequisite for comparability among studies. Since SOPs are still lacking and new methods are developed or optimized very frequently, the aim of this chapter is to point out the most crucial challenges in microplastic research and to gather the most recent promising methods used to quantify environmental concentrations of microplastics and effect studies.

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Techniques for Microplastics Detection in Urban Water Systems

Li²,

Liu³

et al. 2022

Microplastics in Urban Water Management

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A novel, density-independent and FTIR-compatible approach for the rapid extraction of microplastics from aquatic sediments

Abstract: We present here a novel, density-independent, FTIR-compatible and inexpensive approach for extracting microplastics from aquatic sediments.

Cited by 315 publications

References 22 publications

Evaluation of the Munich Plastic Sediment Separator efficiency in extraction of microplastics from natural marine bottom sediments

Evaluation of the Munich Plastic Sediment Separator efficiency in extraction of microplastics from natural marine bottom sediments

Microplastics in Aquatic Systems – Monitoring Methods and Biological Consequences

Techniques for Microplastics Detection in Urban Water Systems

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