Are nanoplastics able to bind significant amount of metals? The lead example

Davranche, Mélanie; Veclin, Cloé; Pierson-Wickmann, Anne-Catherine; Hadri, Hind El; Grassl, Bruno; Rowenczyk, Laura; Dia, Aline; Halle, Alexandra ter; Blancho, Florent; Reynaud, Stéphanie; Gigault, Julien

doi:10.1016/j.envpol.2019.03.087

Cited by 131 publications

(71 citation statements)

References 39 publications

(38 reference statements)

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“…Other significant variables to be considered responsible for increasing the interaction between microplastics and inorganic pollutants are related to pH, salinity variations, photo-oxidative erosion, the formation of biogenic biofilm, enhanced polymer polarity and plastic porosity [98,99,109,111,112].…”

Section: Heavy Metalsmentioning

confidence: 99%

“…The authors of [111] observed the Pb absorption capacity on nanoplastics (particles that are unintentionally produced within the size range from 1 to 1000 nm [113]) that were produced from microplastics that were collected on a beach exposed to the North Atlantic Gyre. Lead (II) adsorption kinetics, isotherm, and pH-edge analyses were carried out.…”

Section: Heavy Metalsmentioning

confidence: 99%

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A Detailed Review Study on Potential Effects of Microplastics and Additives of Concern on Human Health

Campanale

Massarelli

Savino

et al. 2020

IJERPH

901

378

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The distribution and abundance of microplastics into the world are so extensive that many scientists use them as key indicators of the recent and contemporary period defining a new historical epoch: The Plasticene. However, the implications of microplastics are not yet thoroughly understood. There is considerable complexity involved to understand their impact due to different physical–chemical properties that make microplastics multifaceted stressors. If, on the one hand, microplastics carry toxic chemicals in the ecosystems, thus serving as vectors of transport, they are themselves, on the other hand, a cocktail of hazardous chemicals that are added voluntarily during their production as additives to increase polymer properties and prolong their life. To date, there is a considerable lack of knowledge on the major additives of concern that are used in the plastic industry, on their fate once microplastics dispose into the environment, and on their consequent effects on human health when associated with micro and nanoplastics. The present study emphasizes the most toxic and dangerous chemical substances that are contained in all plastic products to describe the effects and implications of these hazardous chemicals on human health, providing a detailed overview of studies that have investigated their abundance on microplastics. In the present work, we conducted a capillary review of the literature on micro and nanoplastic exposure pathways and their potential risk to human health to summarize current knowledge with the intention of better focus future research in this area and fill knowledge gaps.

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Section: Heavy Metalsmentioning

confidence: 99%

Section: Heavy Metalsmentioning

confidence: 99%

A Detailed Review Study on Potential Effects of Microplastics and Additives of Concern on Human Health

Campanale

Massarelli

Savino

et al. 2020

IJERPH

901

378

View full text Add to dashboard Cite

show abstract

“…Furthermore, 10 µl of sample were deposited on a CaF 2 substrate to measure selected particles ∼2 µm (n = 30) to confirm the formation of small plastic particles through sonication, which was suggested but not chemically proven by Davranche et al (2019). In Figure 5 the smallest detectable particle through Raman microspectroscopy (100× magnification objective, N.A.…”

Section: Yield and Reproducibility Of The Fragmentationmentioning

confidence: 99%

“…The described shortcomings of current MP reference particles can be overcome by using sonication of polymers in alkaline suspensions for in situ fragmentation. Ultrasonic treatment of various polymers has already been used to broaden the size distribution of polymer powders in water (Price et al, 1995;Davranche et al, 2019). Furthermore, Balakrishnan et al (2019) used a combination of dissolution of polyethylene (PE) in toluene via sonication with subsequent emulsification in water to create PE spheres in the subµm range (200-800 nm).…”

Section: Introductionmentioning

confidence: 99%

“…They suggest that the same methodology could potentially be used on other polymers, as long as they can be dissolved in a volatile solvent. Davranche et al (2019) fragmented environmental MP in water through sonication to generate nanoplastic. In this paper we propose, for the first time, the use of ultrasonication in alkaline conditions for the simple and controlled production of chemically aged MP particles from single use plastic items.…”

Section: Introductionmentioning

confidence: 99%

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Simple Generation of Suspensible Secondary Microplastic Reference Particles via Ultrasound Treatment

et al. 2020

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In the environment the weathering of plastic debris is one of the main sources of secondary microplastic (MP). It is distinct from primary MP, as it is not intentionally engineered, and presents a highly heterogeneous analyte composed of plastic fragments in the size range of 1 µm−1 mm. To detect secondary MP, methods must be developed with appropriate reference materials. These should share the characteristics of environmental MP which are a broad size range, multitude of shapes (fragments, spheres, films, fibers), suspensibility in water, and modified particle surfaces through aging (additional OH, C=O, and COOH). To produce such a material, we bring forward a rapid sonication-based fragmentation method for polystyrene (PS), polyethylene terephthalate (PET), and polylactic acid (PLA), which yields up to 10 5 /15 mL dispersible, high purity MP particles in aqueous media. To satisfy the claim of a reference material, the key properties-composition and size distribution to ensure the homogeneity of the samples, as well as shape, suspensibility, and aging -were analyzed in replicates (N = 3) to ensure a robust production procedure. The procedure yields fragments in the range of 100 nm−1 mm (<20 µm, 54.5 ± 11.3% of all particles). Fragments in the size range 10 µm−1 mm were quantitatively characterized via Raman microspectroscopy (particles = 500-1,000) and reflectance micro Fourier transform infrared analysis (particles = 10). Smaller particles 100 nm−20 µm were qualitatively characterized by scanning electron microcopy (SEM). The optical microscopy and SEM analysis showed that fragments are the predominant shape for all polymers, but fibers are also present. Furthermore, the suspensibility and sedimentation in pure MilliQ water was investigated using ultraviolet-visible spectroscopy and revealed that the produced fragments sediment according to their density and that the attachment to glass is avoided. Finally, a comparison of the infrared spectra from the fragments produced through sonication and naturally aged MP shows the addition of polar groups to the surface of the particles in the OH, C=O, and COOH region, making these particles suitable reference materials for secondary MP.

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