Separation and characterization of microplastic and nanoplastic particles in marine environment

Zhao, Kai; Wei, Yunman; Dong, Jianhong; Zhao, Penglu; Wang, Yuezhu; Pan, Xinxiang; Wang, Junsheng

doi:10.1016/j.envpol.2021.118773

Cited by 77 publications

(31 citation statements)

References 91 publications

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“…Typically, separating microplastics is achieved through either density-or size-based methods. 1,2,12 Both of these approaches are quick and facilitate rapid sampling in the eld via batch processes (i.e., not continuous separations). The smallest microplastics and nanoplastics (<10 mm, referenced hereaer as MP 10 ), however, are usually unintentionally excluded when sampling because they do not settle quickly in density-based approaches and are oen smaller than the sieve pore sizes in size-based separation methods.…”

Section: Separation Methods For Nano-and Microplasticsmentioning

confidence: 99%

“…To address the foregoing problem, a few recent reports have discussed using microuidic devices to continuously separate MP 10 . 2,21 For example, Correia and Loeschner used eld-ow fractionation to separate microplastics in food on the basis of size, and they coupled the technique with multi-angle light scattering for subsequent microplastic detection. 22 Another technique, dielectrophoresis, has attracted interest for separating and charactering MP 10 due to the label-free nature and relative simplicity of the technique.…”

Section: Separation Methods For Nano-and Microplasticsmentioning

confidence: 99%

“…Microplastics are plastic particles with characteristic dimensions smaller than 5.0 mm. 1,2 Microplastics intentionally fabricated for applications in consumer products, such as cosmetics, are known as primary microplastics. Secondary microplastics arise when macroscopic plastic waste erodes in the environment.…”

Section: Microplastics and Associated Hazardsmentioning

confidence: 99%

See 2 more Smart Citations

Electrokinetic separation techniques for studying nano- and microplastics

Thompson

Crooks

2022

Chem. Sci.

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Section: Separation Methods For Nano-and Microplasticsmentioning

confidence: 99%

Section: Separation Methods For Nano-and Microplasticsmentioning

confidence: 99%

See 1 more Smart Citation

Electrokinetic separation techniques for studying nano- and microplastics

Thompson

Crooks

2022

Chem. Sci.

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“…In addition, some micro/nanoplastics (M/NPs) are deliberately engineered for commercial and domestic use in cosmetics [10], personal care products [3] and pigments [11] and may be directly released into the natural environment. Due to their small sizes, M/NPs may spread into diverse media, including air, lakes, rivers, oceans and soil, interacting with organisms in the ecosystem and further causing adverse outcomes [12].…”

Section: Introductionmentioning

confidence: 99%

Coronas of micro/nano plastics: a key determinant in their risk assessments

et al. 2022

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As an emerging pollutant in the life cycle of plastic products, micro/nanoplastics (M/NPs) are increasingly being released into the natural environment. Substantial concerns have been raised regarding the environmental and health impacts of M/NPs. Although diverse M/NPs have been detected in natural environment, most of them display two similar features, i.e.,high surface area and strong binding affinity, which enable extensive interactions between M/NPs and surrounding substances. This results in the formation of coronas, including eco-coronas and bio-coronas, on the plastic surface in different media. In real exposure scenarios, corona formation on M/NPs is inevitable and often displays variable and complex structures. The surface coronas have been found to impact the transportation, uptake, distribution, biotransformation and toxicity of particulates. Different from conventional toxins, packages on M/NPs rather than bare particles are more dangerous. We, therefore, recommend seriously consideration of the role of surface coronas in safety assessments. This review summarizes recent progress on the eco–coronas and bio-coronas of M/NPs, and further discusses the analytical methods to interpret corona structures, highlights the impacts of the corona on toxicity and provides future perspectives.

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“…Dielectrophoresis (DEP) provides great potential for cell discrimination and isolation for sample processing, sorting of biological cells [ 30 , 31 ], droplets [ 32 , 33 ] and particles [ 34 , 35 , 36 , 37 , 38 , 39 , 40 ]. Li et al [ 41 ] utilized dielectrophoresis to separate live and heat-treated Listeria innocua cells.…”

Section: Introductionmentioning

confidence: 99%

Implementation of an Integrated Dielectrophoretic and Magnetophoretic Microfluidic Chip for CTC Isolation

Zhao

Dong

et al. 2022

Biosensors

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Identification of circulating tumor cells (CTCs) from a majority of various cell pools has been an appealing topic for diagnostic purposes. This study numerically demonstrates the isolation of CTCs from blood cells by the combination of dielectrophoresis and magnetophoresis in a microfluidic chip. Taking advantage of the label-free property, the separation of red blood cells, platelets, T cells, HT-29, and MDA-231 was conducted in the microchannel. By using the ferromagnet structure with double segments and a relatively shorter distance in between, a strong gradient of the magnetic field, i.e., sufficiently large MAP forces acting on the cells, can be generated, leading to a high separation resolution. In order to generate strong DEP forces, the non-uniform electric field gradient is induced by applying the electric voltage through the microchannel across a pair of asymmetric orifices, i.e., a small orifice and a large orifice on the opposite wall of the channel sides. The distribution of the gradient of the magnetic field near the edge of ferromagnet segments, the gradient of the non-uniform electric field in the vicinity of the asymmetric orifices, and the flow field were investigated. In this numerical simulation, the effects of the ferromagnet structure on the magnetic field, the flow rate, as well as the strength of the electric field on their combined magnetophoretic and dielectrophoretic behaviors and trajectories are systemically studied. The simulation results demonstrate the potential of both property- and size-based cell isolation in the microfluidic device by implementing magnetophoresis and dielectrophoresis.

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Separation and characterization of microplastic and nanoplastic particles in marine environment

Cited by 77 publications

References 91 publications

Electrokinetic separation techniques for studying nano- and microplastics

Electrokinetic separation techniques for studying nano- and microplastics

Coronas of micro/nano plastics: a key determinant in their risk assessments

Implementation of an Integrated Dielectrophoretic and Magnetophoretic Microfluidic Chip for CTC Isolation

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