Find research datasets worth reusing

opencc-by-4.0Dec 2023View details →

Dataset: Submicron‐ and Nanoplastic Detection at Low Micro‐ to Nanogram Concentrations Using Gold Nanostar‐Based Surface‐Enhanced Raman Scattering (SERS) Substrates

ABSTRACT The presence of submicron- (1 µm – 100 nm) and nanoplastic (< 100 nm) particles within various sample matrices, ranging from marine environments to foods and beverages, has become a topic of increasing interest in recent years. Despite this interest, very few analytical techniques remain that allow for the detection of these small plastic particles in the low concentration ranges that they are anticipated to be present at. Research focused on optimizing surface-enhanced Raman scattering (SERS) to enhance signal obtained in Raman spectroscopy has been shown to have great potential for the detection of plastic particles below conventional resolution limits. In this study, we produce SERS substrates composed of gold nanostars and assess their potential for submicron- and nanoplastic detection. The results show 33 nm polystyrene could be detected down to 1.25 µg/mL while 36 nm poly(ethylene terephthalate) was detected down to 5 µg/mL. These results confirm the promising potential of the gold nanostar-based SERS substrates for nanoplastic detection. Furthermore, combined with findings for 121 nm polypropylene and 126 nm polyethylene particles, they highlight potential differences in analytical performance that depend on the properties of the plastics being studied.

opencc-by-4.0Jun 2022View details →

Data for: Polystyrene nanoplastics differentially influence the outcome of infection by two microparasites of the host Daphnia magna

This dataset supports the findings of the study 'Polystyrene nanoplastics differentially influence the outcome of infection by two microparasites of the host Daphnia magna', published in Philosophical Transactions of the Royal Society B (https://doi.org/10.1098/rstb.2022.0013).

opencc-by-4.0Nov 2023View details →

Detection of Submicron- and Nanoplastics Spiked in Environmental Fresh- and Saltwater with Raman Spectroscopy

ABSTRACT Detection of small plastic particles in environmental water samples has been a topic of increasing interest in recent years. A multitude of techniques, such as variants of Raman spectroscopy, have been employed to facilitate their analysis in such complex sample matrices. However, these studies are often conducted for a limited number of plastic types in matrices with relatively little additional materials. Thus, much remains unknown about what parameters influence the detection limits of Raman spectroscopy for more environmentally relevant samples.  To address this, this study utilizes Raman spectroscopy to detect six plastic particle types; 161 and 33 nm polystyrene, < 450 nm and 36 nm poly(ethylene terephthalate), 121 nm polypropylene, and 126 nm polyethylene; spiked into artificial saltwater, artificial freshwater, North Sea, Thames River, and Elbe River water. Overall, factors such as plastic particle properties, water matrix composition, and experimental setup were shown to influence the final limits of detection.

opencc-by-4.0Aug 2024View details →

Supporting Data for "Identifying the Origins of Nanoplastics in the Abyssal South Atlantic Using Backtracking Lagrangian Simulations with Fragmentation"

Supporting Data for "Identifying the Origins of Nanoplastics in the Abyssal South Atlantic Using Backtracking Lagrangian Simulations with Fragmentation", published in the Ocean and Coastal Research Journal. The repository consists of the code used for the simulations and analysis, and the supplementary information document associated with the main manuscript, the Lagrangian simulation outputs and aditional data used for the analysis.

opencc-by-4.0Mar 2024View details →

Dataset of the manuscript: Efficient removal of nanoplastics from industrial wastewater through synergetic electrophoretic deposition and particle-stabilized foam formation

This dataset is based on the data underlying the figures shown in the manuscript titled Efficient removal of nanoplastics from industrial wastewater through synergetic electrophoretic deposition and particle-stabilized foam formation. A readme file is uploaded to decribe the content of all data folders. All data are sorted according to their appearance in the figures of the main manuscript.

opencc-by-4.0Nov 2024View details →

SUPPLEMENTARY DATA TO: Using a citizen science approach to assess nanoplastics pollution in remote high-altitude glaciers

This is the repository of the supplementary data, and it contains the following files:  Raw data files as the original output of TD-PTR-ToF-MS for all the samples, all the blanks, all the spikes and all the calibration runs (.h5 files in three zip arcives) Polymer library files (a zip archive including csv files. A data analysis file including raw data, blank subtraction and LOD correction of all measurements (xlsx file). A fingerprinting result file for each plastic type (xlsx file) A data analysis file after plastic fingerprinting (xlsx file).

opencc-by-4.0Jun 2024View details →

Data and code for "Salomon et al. 2024: Effects of dissolved organic matter on the toxicity of micro- and nanoplastic particles to Daphnia - a meta-analysis."

<div> All data and R code for Salomon S, Grubmüller E, Kropf P, Nickl E, Rühl A, Weigel S, Becker F, Antonio Vital AL, Laforsch C, Schott M, Mair MM. (2024). Effects of dissolved organic matter on the toxicity of micro- and nanoplastic particles to Daphnia - a meta-analysis. Microplastics and Nanoplastics. (<a href="https://doi.org/10.1186/s43591-024-00088-4" target="_blank" rel="noopener">https://doi.org/10.1186/s43591-024-00088-4</a>) Abstract Effects of micro- and nanoplastic particles (MNP) on organisms have been increasingly reported in recent years, with a large number of studies conducted on water fleas of the genus Daphnia. Most of the available studies used pristine particles that have not been exposed to the environment or to organic substances. In natural environments, however, organic substances like dissolved organic matter (DOM) attach to the MNP, forming an ecocorona on the particles’ surface. How the formation of an ecocorona influences MNP toxicity is still uncertain. While some studies suggest that DOM can mitigate the negative effects of MNP on organisms, other studies did not find such associations. In addition, it is unclear whether the DOM attached to the particles’ surface is attenuating the effects of MNP directly or whether co-exposure with DOM solved in the medium attenuates MNP toxicity indirectly, for instance by increasing Daphnia‘s resilience to stressors in general. To draw more solid conclusions about the direction and size of the mediating effect of DOM on MNP-associated immobilization in Daphnia spp., we synthesized evidence from the published literature and compiled 305 data points from 13 independent studies. The results of our meta-analysis show that the toxic effects of MNP are likely reduced in the presence of certain types of DOM in the exposure media. We found similar mediating effects when MNP were incubated in media containing DOM before the exposure experiments, although to a lesser extent. Future studies designed to disentangle the effects of DOM attached to the MNP from the general effects of DOM in the exposure medium will contribute to a deeper mechanistic understanding of MNP toxicity in nature and enhance the reliability of MNP risk assessment. </div>

opencc-by-4.0Oct 2024View details →

Effect of micro- and nanoplastic particles on human macrophages

This podcast describes a study investigating the effects of polystyrene micro- and nanoplastics (MNPs) on human macrophages. The study, <a href="https://www.sciencedirect.com/science/article/pii/S030438942400832X">published here</a>, examines the uptake of MNPs by macrophages derived from both a cell line (THP-1) and primary human cells (peripheral blood mononuclear cells, PBMCs). The researchers used transmission electron microscopy (TEM), scanning electron microscopy (SEM), and live cell imaging to visualize MNP uptake. They also assessed the impact of MNP exposure on macrophage metabolic activity, cytotoxicity, polarization, and reactive oxygen species (ROS) production. The study highlights the concentration-dependent uptake of MNPs and their ability to induce cytotoxicity and increase nitric oxide production in macrophages. The results emphasize the importance of further research to understand the potential health risks associated with plastic pollution in humans. Details: Effect of micro- and nanoplastic particles on human macrophages Maike Y Adler , Insaf Issoual, Michael Rückert, Lisa Deloch, Carola Meier, Thomas Tschernig, Christoph Alexiou, Felix Pfister, Anja Frm Ramsperger, Christian Laforsch, Udo S Gaipl, Katharina Jüngert, Friedrich Paulsen J Hazard Mater. 2024 Jun 5:471:134

opencc-by-4.0Nov 2023View details →

Nanoplastic stimulates the amyloidogenesis of Parkinson's alpha-synuclein NACore

Environmental plastic wastes are potential health hazards due to their prevalence as well as their versatility in initiating physical, chemical, and biological interactions and transformations. Indeed, recent research has implicated the adverse effects of micro- and nano-plastics, including their neurotoxicity, yet how plastic particulates may impact the aggregation pathway and toxicity of amyloid proteins remains unknown. Here we employed electrospray ionization time-of-flight mass spectrometry (ESI-TOF-MS) to reveal the polymorphic oligomerization of NACore, a surrogate of alpha synuclein that is associated with the pathogenesis of Parkinson's disease. Our data indicated that the production rate and population of the NACore oligomers were modulated by their exposure to a polystyrene nanoplastic, and our cellular assays further revealed an elevated NACore toxicity in microglial cells elicited by the nanoplastic. Our simulations confirmed that the nanoplastic-NACore association was promoted by their hydrophobic interactions. These findings were corroborated by an impairment to zebrafish hatching, survival, and development in vivo upon their embryonic exposure to the nanoplastic. Together, this study has uncovered the dynamics and mechanism of amyloidogenesis elevated by a nanoplastic trigger, shedding a new light on the neurological burden of plastic pollution.

opencc-zeroDec 2021View details →

Dataset of nanoplastic transport in soil via bioturbation by Lumbricus terrestris

The dataset comprises data acquired in laboratory-based process-studies with microcosms on the transport of nanoplastics (polystyrene, 256 nm diameter) in an agricultural soil via bioturbation over the course of 4 weeks. Transport of nanoplastics was monitored through the use of palladium (Pd)-doped nanoplastics (0.24 % w/w) by analyzing soil samples at specific depths (0-2 cm, 2-6 cm, 6-15 cm, 15-29 cm) after defined experimental times (7, 14, 21, 28 days). Microcosms consisted of 30 cm height, 10 cm diameter soil columns which were set up with or without earthworms and with or without nanoplastics spiked to the uppermost 2 cm. Two experimental runs were executed with the first (Exp1) designed to focus on the average transport within the soil profile over time, and the second (Exp2) focussing on the smaller scale distribution of the nanoplastics in the soil (i.e. soil matrix versus drilosphere) while monitoring earthworm burrow development over time using X-ray computed tomography. In the first experiment, earthworms were measured for their nanoplastic content after the experiment. The dataset made available here comprises the details of the microcosm setup for Exp1 and Exp2, details on detected nanoplastic concentrations for the average soil profile (Exp1), drilosphere and soil matrix (Exp2), as well as detected concentrations in earthworm tissue and monitoring of earthworm weight (Exp1). A selection of X-ray CT images is also provided, chosen based on the considered highest relevance. X-ray CT scans of other measurement timepoints are available upon request.

opencc-zeroMay 2022View details →

Effects of acute exposure to polystyrene nanoplastics on the channel catfish larvae: Insights from energy metabolism and transcriptomic analysis

Microplastics (nanoplastics) pollution has been a major ecological issue threatening global aquatic ecosystems. However, knowledge of the adverse effects of nanoplastics and the effects on freshwater ecosystems is still limited. To understand the impacts of nanoplastics on freshwater ecosystems, it is essential to reveal the physiological changes caused by nanoplastics in freshwater organisms, especially at their early life-history stages. In the present study, the larval channel catfish Ietalurus punetaus were exposed to gradient concentrations (0, 5, 10, 25 and 50 mg/L) of 75-nm polystyrene nanoplastics (PS-NPs) for 24 h or 48 h, and changes in contents of energy metabolites, metabolic enzyme activities and transcriptome were assessed. The results showed glucose and triglyceride contents increased after 24 h of exposure to 10 or 25 mg/L of PS-NPs but decreased with increased concentrations or prolonged exposure duration. Activities of most metabolic enzymes analyzed decreased in the larvae after 48 h of exposure, especially in 25 or 50 mg/L of PS-NPs. These suggested that PS-NPs caused huge energy consumption and disturbed the energy metabolism in larval fish. Transcriptomic analysis showed that 48 h of exposure to 50 mg/L PS-NPs affected the expression of genes involved in protein digestion and induced response of proteasomes or heat shock proteins in the larval I. punetaus. The genes involved in peroxisome proliferator-activated receptors (PPAR) pathway and biosynthesis of amino acids were activated after the exposure. PS-NPs also depressed the expression of the genes involved in gonad development or muscle contraction in the larval I. punetaus. Overall, acute exposure to 75-nm PS-NPs disrupted the energy metabolism by consuming the energy reserves, and affected a series of molecular pathways which may further affect the development and survival of fish. This study provided the information about adverse effects of nanoplastics on the fish larvae and revealed the molecular pathways for the potential adverse outcomes.

opencc-by-4.0Apr 2024View details →

Quantitative tracking of nanoplastics along the food chain from lettuce (Lactuca sativa) to snails (Cantareus aspersus)

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opencc-by-4.0Jun 2024View details →

Adsorption of drugs on nanoplastics: Modeling challenges and experimental proof - datasets and structures

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opencc-by-4.0Aug 2024View details →

Size matters: The effects of polystyrene nanoplastics on parasite transmission in the Daphnia-Metschnikowia host-parasite system

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opencc-by-4.0Sep 2021View details →

Nanoplastics Modulate the Outcome of Zooplankton- Microparasite Interactions

The updated version of the scripts are in is Github repo: https://github.com/StevetheGreek97/DaMN_Project.git

opencc-zeroFeb 2023View details →

Data for: Assessment of cryogenic pretreatment for simulating environmental weathering in the formation of surrogate micro- and nanoplastics from agricultural mulch film

Microplastics (MPs) and nanoplastics (NPs) from mulch films and other plastic materials employed in vegetable and small fruit production pose a major threat to agricultural ecosystems. For conducting controlled studies on MPs' and NPs' (MNPs') ecotoxicity to soil organisms and plants and fate and transport in soil, surrogate MNPs are required that mimic MNPs that form in agricultural fields. We have developed a procedure to prepare MPs from plastic films or pellets using mechanical milling and sieving, and conversion of the resultant MPs into NPs through wet grinding, both steps of which mimic the degradation and fragmentation of plastics in nature. The major goal of this study was to determine if cryogenic exposure of two biodegradable mulch films effectively mimics the embrittlement caused by environmental weathering in terms of the dimensional, thermal, chemical, and biodegradability properties of the formed MNPs. We found differences in size, surface charge, thermal and chemical properties, and biodegradability in soil between MNPs' prepared from cryogenically treated vs. environmentally weathered films, related to the photochemical reactions occurring in the environment that were not mimicked by cryogenic treatment, such as depolymerization and cross-link formation. We also investigated the size reduction process for NPs and found that the size distribution was bimodal, with populations centered at 50 nm and 150–300 nm, and as the size reduction process progressed, the former subpopulation's proportion increased. The biodegradability of MPs in soil was greater than for NPs, a counter-intuitive trend since greater surface area exposure for NPs would increase biodegradability. The result is associated with differences in surface and chemical properties and to minor components that are readily leached out during the formation of NPs. In summary, the use of weathered plastics as feedstock would likely produce MNPs that are more realistic than cryogenically-treated unweathered films for use in experimental studies.

openother-openMay 2023View details →

Data and code for "Brehm et al. (2023) The complexity of micro- and nanoplastic research in the genus Daphnia – A systematic review of study variability and a meta-analysis of immobilization rates"

All data and R code for Brehm, J., Ritschar, S., Laforsch, C. and Mair, M.M. (2023). The complexity of micro- and nanoplastic research in the genus Daphnia – A systematic review of study variability and a meta-analysis of immobilization rates. Journal of Hazardous Materials 458: 131839. (<a href="https://doi.org/10.1016/j.jhazmat.2023.131839">https://doi.org/10.1016/j.jhazmat.2023.131839</a>) Abstract In recent years, the number of publications on nano- and microplastic particles (NMPs) effects on freshwater organisms has increased rapidly. Freshwater crustaceans of the genus Daphnia are widely used in ecotoxicological research as model organisms for assessing the impact of NMPs. However, the diversity of experimental designs in these studies makes conclusions about the general impact of NMPs on Daphnia challenging. To approach this, we systematically reviewed the literature on NMP effects on Daphnia and summarized the diversity of test organisms, experimental conditions, NMP properties and measured endpoints to identify gaps in our knowledge of NMP effects on Daphnia. We use a meta-analysis on mortality and immobilization rates extracted from the compiled literature to illustrate how NMP properties, study parameters and the biology of Daphnia can impact outcomes in toxicity bioassays. In addition, we investigate the extent to which the available data can be used to predict the toxicity of untested NMPs based on the extracted parameters. Based on our results, we argue that focusing on a more diverse set of NMP properties combined with a more detailed characterization of the particles in future studies will help to fill current research gaps, improve predictive models and allow the identification of NMP properties linked to toxicity.

opencc-by-4.0Mar 2023View details →

Imptox Public Workshop Micro- Nanoplastics & Human Health: Insights from Science and Research (pt2)

Experts gather at the Imptox workshop to discuss the emerging understanding of micro- and nanoplastics' impact on human health. On Friday, March 24th, 2023, the successful Imptox public workshop attracted a large audience discussing the potential health impacts of micro- and nanoplastics with experts from all over Europe. The Imptox project has received funding from the EU’s H2020 framework program for research and innovation under grant agreement n. 965173

opencc-by-4.0Mar 2023View details →

Imptox Public Workshop Micro- Nanoplastics & Human Health: Insights from Science and Research (pt3)

Experts gather at the Imptox workshop to discuss the emerging understanding of micro- and nanoplastics' impact on human health. On Friday, March 24th, 2023, the successful Imptox public workshop attracted a large audience discussing the potential health impacts of micro- and nanoplastics with experts from all over Europe. The Imptox project has received funding from the EU's H2020 framework program for research and innovation under grant agreement n. 965173.