Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 57 for “"Microplastic"”.
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Atmospheric microplastic pollution
… field of research on theatmospheric transport of microplastic and its potential terrestrial and oceanicsource. Taking atmospheric deposition samples from the French Pyrenees Iwas able to illustrate the first atmospheric transport of microplastics of at least95km using hysplit4 back trajectory …
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Submesoscale eddies and their potential for buoyant microplastic accumulation
… and re-distribution of particles such as microplastics trapped within. While much research is devoted to plastic distribution at the ocean surface and near-surface, very little is known about their subsurface distribution. A particularly promising candidate for this mechanism is the …
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Field-Portable dissolved gas sensing and perspectives in aqueous microplastic detection
… the ubiquity and potential consequences of microplastics in aqueous environments are just beginning to be recognized by the environmental research community. Microplastics (MPs) are small particles of polymer debris, commonly defined as being between 1 μm and 1000 μm. Despite the …
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Investigating optical microplastic detection methods using fluorescent staining through Nile Red
Microplastics (MPs) are small pieces of plastic debris typically defined as smaller than 5mm. Given that the global environment faces a growing plastic pollution crisis, an urgent need exists for rapid, low-cost microplastic detection systems to characterize the health and environmental risk posed …
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Field-Portable Dissolved Gas Sensing and Perspectives in Aqueous Microplastic Detection
… the ubiquity and potential consequences of microplastics in aqueous environments are just beginning to be recognized by the environmental research community. Microplastics (MPs) are small particles of polymer debris, commonly defined as being between 1 µm and 1000 µm. Despite the …
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Microplastic adherence to common species of macroalgae found throughout Scottish coastal zones
Microplastics are a ubiquitous, persistent, and concerning waste material, produced globally to fulfil many social, economic, and industrial needs. Over the last forty years studies have assessed their abundance within the environment and their growing effects on marine life. However, until …
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Microplastic deformation of polycrystalline silver chloride containing a small volume fraction of hard inclusions
Silver chloride is a ductile ionic solid which has mechanical properties typically associated with metals. A new method is presented for making composites of silver chloride doped with 500 ppm copper chloride (CuC1) and 0.01 volume percent of 1 to 5 micron glass spheres and particles. After …
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Microplastic Abundance, Distribution and Impacts on Sargassum-Associated Juvenile Fishes in the Gulf of Mexico
<p>Microplastics are a concern in marine environments because they are highly durable, ubiquitous, and can be mistaken for food and ingested by small organisms. Pelagic <em>Sargassum</em>, an important habitat for larval and juvenile stages of many fish species, is found in large surface …
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Evaluating non-point source microplastic pollution and its impact on biota in the Huron River
<p>Contaminants of emerging concern (CECs), like microplastics and pharmaceuticals, are a growing threat to aquatic ecosystems across the globe. Microplastics can be transported into waterways through a myriad of sources, including point sources such as wastewater treatment plants (WWTPs) and …
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Freshwater fishes and microplastics in an era of multiple stressors
Microplastics, plastics < 5 mm in size, are environmental contaminants typically arising from the breakdown of larger plastics that may cause negative impacts when consumed by freshwater fishes. However, microplastic exposure occurs in combination with other interacting multiple stressors, for …
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Estimating microplastic concentrations in surface water using satellite-based turbidity measurements: a case study on the New River, VA
Microplastic (<5 mm) pollution in rivers poses a threat to ecosystems and human livelihood around the world, yet the methods used to quantify and monitor their occurrence, distribution, and transport are highly limited. A substantial portion of plastics make their way into rivers through a variety …
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Microplastic pollution in the deep sea ecosystem: a study from the Rockall Trough, North East Atlantic Ocean
… has been growing environmental concern regarding microplastics. Despite the continued and increasing inputs of plastics into the environment, studies reveal lower than expected concentrations in surface waters. More recently reports have emerged documenting high concentrations of microplastics on …
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Imaging-based lensless polarisation-resolving fluid stream analyser for automated, label-free and cost-effective microplastic classification
The presence of microplastics in the environment is of concern with the actual distribu-tion of this pollution remaining relatively unknown. The ocean is of particular interest as the monitoring of microplastics in this area presents a challenge in that in situ fluid stream solutions are not …
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Influence of Terrain, Vegetative, and Hydraulic Properties on Sediment and Microplastic Accumulation in the Stroubles Creek Floodplain
Sediment and microplastic accumulation in stream systems occur when particulates entrained in overbank flow are retained by the floodplain. Despite overbank flow conditions dictating sediment and microplastic accumulation, the spatial distribution of accumulation within floodplains remains poorly …
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Southeast Michigan wastewater treatment plants as potential sources of microplastic pollution in the Rouge River and Huron River
… stability of freshwater and marine environments. Microplastics can be introduced into waterways from a variety of sources, such as agricultural runoff, anthropogenic litter, and wastewater treatment plants (WWTPs). To determine whether WWTPs are a source of microplastics to the Lower Rouge and …
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Microplastic ingestion by two estuarine-associated mullet species, Chelon richardsonii and Chelon dumerili in the Breede Estuary, South Africa
Microplastic (MP) ingestion in fish has the potential to cause a multitude of damaging effects to both organisms and the environment. Microplastics (MPs) are defined as solid plastic particles ≤ 5mm in size. The small size of MPs makes them extremely hazardous, as they imitate a range of food items …
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Abundance and composition of microplastics in surface waters and sediments of five south-central Lake Ontario tributaries
… the Great Lakes every year. Most of this is microplastic, tiny plastic particles less than five millimeters in length or diameter. Microplastic pollution is a growing environmental concern in the Great Lakes where these particles can affect aquatic life as well as humans if ingested. To …
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