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302 results for “Microplastics”
Eulerian modelling of the three-dimensional distribution of seven popular microplastic types in the global ocean dataset
<p>Dataset for the paper "Eulerian modelling of the three-dimensional distribution of seven popular microplastic types in the global ocean" by A. S. Mountford and M. A. Morales Maqueda.</p> <p>ORCA2_5d_00010101_00011231_ptrc_T_con.nc<a href="https://zenodo.org/api/files/c6c9cbac-d5db-452a-aade-fd852db07351/ORCA2_5d_00010101_00011231_ptrc_T_con.nc"> </a> - control experiment (year 50)</p> <p>ORCA2_5d_00010101_00011231_ptrc_T_30m.nc - 30 m year<sup>-1</sup> piston velocity sensitivity experiment (year 50)</p> <p>ORCA2_5d_00010101_00011231_ptrc_T_90m.nc - 90 m year<sup>-1</sup> piston velocity sensitivity experiment (year 50)</p> <p>ORCA2_5d_00010101_00011231_ptrc_T_50.nc - neutrally buoyant sensitivity simulation (year 50)</p> <p>plastic_1_ts.nc - positively buoyant time series</p> <p>plastic_2_ts.nc - neutrally buoyant time series</p> <p>plastic_3_ts.nc - negatively buoyant time series</p> <p>plastic_input_ORCA2.nc - plastic input data file</p> <p>ORCA2_5d_00010101_00011231_grid_U.nc & ORCA2_5d_00010101_00011231_grid_V.nc - ocean velocity files</p>
Figure 3 in Occurrence of microplastics in the gastrointestinal tracts of some edible fish species along the Turkish coast
Figure 3. MP particles extracted from edible fish species present in Turkish seas.
Figure 9 in Microplastics in commercial fish digestive tracts from freshwater habitats in Northern Thailand
Figure 9. Microplastic type and shape in the GIT of fish samples confirmed by FTIR.
Figure 5 in Microplastics in commercial fish digestive tracts from freshwater habitats in Northern Thailand
Figure 5. Composition of microplastic found in freshwater fish; a) size b) morphotype c) color.
European Spatial Survey (ESS): Effects of microplastics on microbial activity/community
<p>European spatial survey (ESS) comprised sampling of farmed soils along gradients of agricultural plastics (AP) use, soil management, and biogeography. Five European countries (Finland, FI; Spain, ES; Czech Republic, CZ; Norway, NO; Germany, DE) were selected for microbial experiment, and four field conditions were categorized: AP use, application of sewage sludge-derived biosolid, application of compost or digestate products (suspected to be contaminated by plastics), and control fields (no documented history of plastic exposure). We investigated the effects of LDPE-MPs and PBAT-BD-MPs in differret ESS soils, and the distinct responses of microbial activities (β-glucosidase, β-D-1,4-cellobiosidase, β-1,4-N-acetyl-glucosaminidase, and phosphatase) and communities (bacteria and fungi; diversity and relative abundances) were observed in 39 different soils.</p>
Figure 1 in A new method for analyzing microplastic particle size distribution in marine environmental samples
Figure 1. Sampling sites in Sevastopol Bay, the Black Sea.
Figure 1 in Microplastic intake of Unio mancus Lamarck 1819 collected from Atatürk Dam Lake, Türkiye
Figure 1. Study area. Black points represent potential pollution sources.
Microplastic Dataset: Supporting microplastic monitoring based on cost-effective open-hardware solutions
<p>ASTRAL Dataset related to microplastic monitoring based on the open-hardware initiative PlanktoScope</p>
Identification of microplastics isolated from Rusanda peloid (Serbia) with ATR-FTIR
<p>This dataset contains unprocessed FTIR spectra from the isolated microplastic candidates from the peloid sample from Rusanda Lake (Serbia). The spectra were processed with OpenSpecy 1.0 (https://openanalysis.org/openspecy/), an open-source spectral processing and matching tool (Cowger et al., 2021). The processed spectra are included as a separate folder in the dataset, together with top library matches for each spectrum. </p>
All black: a microplastic extraction combined with colour-based analysis allows identification and characterisation of tire wear particles (TWP) in soils
<p>The present file contains the information collected on particles analyzed in the study:</p> <p><em><strong><span><span><span><span><span><span>All black: a microplastic extraction combined with colour-based analysis allows identification and characterisation of tire wear particles (TWP) in soil</span></span></span></span></span></span><span>s</span></strong></em></p> <p><span>published in the Microplastics and Nanoplastics journal in 2024. </span></p> <p><span>The first sheet of the excel file contains the data, the second sheet contains the description of the data and the parameters recorded. </span></p>
Metadata on environmental and fish bioaccessibility of phthalate esters and BPA from PE and PVC microplastics
<p>Water and fish bioaccessibility data in Tables S5 and S7 of the article entitled "Bioaccessibility of plastic-related compounds from polymeric particles in marine settings: Are microplastics the principal vector of phthalate ester congeners and bisphenol A towards marine vertebrates?" published in Science of the Total Environment 954 (2024) 176308</p>
Harmonized analysis of microplastics: Insights from practical application within the FACTS project
<p>The pollution of the environment with plastics is of emerging concern. While first initiatives aim to reduce the input of these materials, the already existing amounts pose a problem. Due to degradation and fragmentation the initially large items form micro- and nanoplastic particles. Yet the analysis of these contaminates is hampered due to increasing number of analytical pipelines and tools in the different laboratories. In the recent years, various projects aimed to provide information about these issues at different scales. Here, we present the harmonization procedures derived and applied within the "Fluxes and Fate of Microplastics in Northern European Waters" (FACTS) project. To achieve a project internal harmonization the available sampling techniques, sample extraction methods, quality assurance measures aand protocols as well as analytical techniques were collected, evaluated and finally transferred into commonly agreed harmonized procedures. These procedures were afterwards applied in the planning of a large scale sampling campaign along the Norwegian Coast and within the Bergen Fjord. This was achieved by defining the filter mesh sizes for filtration pumps and sampling nets as well as the amount of sediment sampled. In contrast to sampling, the extraction was more difficult to harmonize yet a common agreement was derived by using Fenton's reagent oxidation for the removal of organic matter and sodium bromide for density separation following the laboratory internal protocol. Finally, the for analysis FTIR microscopy shall be applied using a common database and software tool (siMPle) allowing a following pyrolysis gas chromatography-mass spectrometry (py-GC/MS) analysis. The experience during the application of these protocols within FACTS will be discussed and further contextualized with the results of the "EUROpean Quality Controlled Harmonisation Assuring Reproducible Monitoring and assessment of plastic pollution" (EUROqCHARM) project. Also see: https://micro2022.sciencesconf.org/427364/document</p>
Dataset of paper "Kinetic and mechanistic analysis of membrane fouling in microplastics removal from water by dead-end microfiltration"
<p>Dataset of paper "Kinetic and mechanistic analysis of membrane fouling in microplastics removal from water by dead-end microfiltration":</p> <ul> <li>Microplastics and membrane characterisation: micro-FTIR and ATR spectra.</li> <li>Particle Size Distribution.</li> <li>Identifying the main successive fouling mechanisms using Hermia’s equation.</li> <li>The kinetic constants as a function of the microplastic type and the operating parameters.</li> <li>Permeate flux decline during microplastics filtration.</li> <li>Water contact angle and profilometry measured before and after the filtration of MPs.</li> </ul>
Production of microplastic reference materials
<p>The validation of analytical methods for the identification and quantification of micro and nanoplastics in environmental matrices is hindered by a lack of standard reference materials (RMs). These materials are required for the harmonisation of analytical methods and the generation of comparable and reliable data. As a result, uncertainties associated with the measurements from individual laboratories can occur due to contamination, over-estimation, and under-estimation of nano and microplastics from environmental samples affecting the comparison and interpretation of analytical data from different laboratories. Until now, the Norwegian Institute for Water Research (NIVA) has focused on making reference materials (RMs) in the microscale, i.e., from 50 μm and up to 1 mm of the following polymer types: PVC, PE, PET, PS, PP and PC as well as polymer mixtures, in the form of effervescent soda tablets. These RMs have been used in inter- laboratory comparison (ILC) studies worldwide as well as in microplastic recovery tests. The RMs have been analysed by different laboratories using different techniques, including light microscopy, μFTIR, Raman and Pyr-GC/MS. The latest ILC study including the soda tablets is the EU project EUROqCHARM, where two sets of soda tablets, one containing PE, PET and PS (50-300 μm) and the other containing PP, PC and PVC (50-300 μm) were produced. A complete characterisation of these batches was carried during production by counting the number of particles in 20 tablets obtaining a RSD of 11 % and 13 %, respectively and by measuring all the particles in 10 of the tablets for each batch to study the size distribution. In this presentation the results for the complete characterisation of the tablets will be shown. The next step in generating relevant RMs is to focus attention on the size fractions below Also see: https://micro2022.sciencesconf.org/425663/document</p>
Dataset of paper "Growth and prevalence of antibiotic-resistant bacteria in microplastic biofilm from wastewater treatment plant effluents"
<p>Dataset of paper "Growth and prevalence of antibiotic-resistant bacteria in microplastic biofilm from wastewater treatment plant effluents":</p> <ul> <li>Raw 16srRNA forward and reverse sequence data</li> <li>16srRNA partial sequence data for submission to public database</li> <li>Nucleotide BLAST result from National Centre of Biotechnology Information (NCBI) database</li> <li>Summary of sample metadata and bacterial colony forming units (CFUs)</li> <li>Summary of sample metadata and quantified genes</li> </ul>
Global Marine Microplastic Concentrations
<p>"The NOAA NCEI global Marine Microplastics product provides access to aggregated, comprehensive, standardized, quality controlled, global data on microplastics in marine settings, from 1972-Present. The database contains information on microplastics concentrations (reported in particles/m3), date of collection, latitude and longitude where data was collected, sampling instruments used for collection, and links to publications on the data. The information in this database can be used to improve water quality and protect the ecosystem, especially coastal ecological habitats such as salt marshes and mangrove forests that help recycle nutrients, serve as breeding grounds for fingerlings, and permanent homes for oysters and other coastal marine wildlife." The version of the dataset that is included in CMAP was accessed on the NCEI website on 3/22/23. For more information on sampling methodology, see the papers listed in the reference section. </p> <p>This description was reproduced using the following source:<br> https://data.noaa.gov/metaview/page?xml=NOAA/NESDIS/ncei/gis//iso/xml/microplasticsDatabase.xml&view=getDataView&header=none<br> </p>
Estuarine Sedimentary Microplastics from City to Sea: Narragansett Bay, Rhode Island, USA
<p>Count and polymer characterization data for microplastics extracted from shoreline and estuarine sediments around Narragansett Bay, Rhode Island, USA. Microplastics (63µm - 5 mm) were extracted from sediment using a dense solution of sodium iodide (NaI) followed by enumeration via microscopy and polymer characterization via Fourier-transform infrared spectroscopy (FTIR)(Shimadzu IRTracer-100). Concentrations are reported in # MP particles per kg dry weight (DW) sediment. </p>
Data from: Heteroaggregation of virions with microplastics reduces the number of active bacteriophages in aqueous environments
<p>The objective of this study is to explore the effects of microplastics on the viability of the bacteriophages in an aqueous environment. Bacteriophages (phages), i.e., viruses of bacteria, are essential in homeostasis. It is estimated that phages cause up to 40% of the death of all bacteria daily. Any factor affecting phage activity is vital for the whole food chain and the ecology of numerous niches. We hypothesize that the number of active phages decreases due to the virions' adsorption on microplastic particles or by the released leachables from additives used in the production of plastic, e.g., stabilizers, plasticizers, colorants, and reinforcements. We exposed three diverse phages, namely T4 (tailed), MS2 (icosahedral), and M13 (filamentous), to 1 mg/mL suspension of twelve industrial-grade plastics [acrylonitrile butadiene styrene (ABS), high-impact polystyrene (HIPS), poly-ε-caproamide (PA6), polycarbonate (PC), polyethylene (PE), polyethylene terephthalate (PET), poly(methyl methacrylate) (PMMA), polypropylene (PP), polystyrene (PS), polytetrafluoroethylene (PTFE), polyurethane (PUR), polyvinyl chloride (PVC)] shredded to obtain microparticles of radius ranging from 2 to 50 µm. The effect of leachables was measured upon exposure of phages not to particles themselves but to the buffer pre-incubated with microplastics. A double-overlay plaque counting method was used to assess phage titers. We employed a classical linear regression model to verify which physicochemical parameters (65 variables were tested) govern the decrease of phage titers. The key finding is that adsorption mechanisms result in up to complete scavenging of virions, whereas leachables deactivate up to 50% of phages. This study reveals microplastic pollution's plausible and unforeseen ecotoxicological effect causing phage deactivation. Also, phage transmission through adsorption can alter the balance of the food chain in the new environment. The effect depends mainly on the zeta potentials of the polymers and the phage type.</p>
EPDM microplastic and earthworm effects on plants
<p>Soil microplastic pollution can have negative effects on organisms, including plants, but the underlying mechanisms are not fully understood. We tested whether structural or chemical properties of a microplastic cause its effects on plant above- and belowground growth and whether these effects can be influenced by earthworms. We conducted a factorial experiment in a greenhouse with seven common Central European grassland species. Microplastic granules of the synthetic rubber ethylene propylene diene monomer (EPDM), a frequently used infill material of artificial turfs, and cork granules with a comparable size and shape to the EPDM granules were used to test for structural effects of granules in general. To test for chemical effects, EPDM-infused fertilizer was used, which should have contained any leached water-soluble chemical components of EPDM. Two Lumbricus terrestris individuals were added to half of the pots, to test whether these earthworms modify effects of EPDM on plant growth. As response parameters aboveground, belowground, and total biomass, as well as several root traits were measured, and further parameters derived from the measured values. EPDM granules had a clear negative effect on plant growth, but since cork granules had a negative effect of similar magnitude, with an average decrease in biomass of 37 % in presence of granules, this is likely due to the structural properties of granules (i.e., size and shape). For some belowground plant traits, EPDM had a stronger effect than cork, which shows that there must be other factors playing into the effects of EPDM on plant growth. The EPDM-infused fertilizer did not have any significant effect on plant growth by itself, but it had in interaction with other treatments. Earthworms had an overall positive effect on plant growth and mitigated most of the negative effects of EPDM. These results show that EPDM microplastic can have negative effects on plant growth, and that these might be more related to its structural than to its chemical properties.</p>
Raw data accompanying the manuscript "Uptake of microplastics and impacts on plant traits of savoy cabbage"
<p>These are the raw datasets used to generate Figure 1 for the manuscript entitled "Uptake of microplastics and impacts on plant traits of savoy cabbage". The folders contain all raw CARS and SRS data that are needed to reproduce Figure 1 (TIFF format).</p>
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.