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Records 76 to 100 of 123 records about 'Microplastics'

Microplastic abundance in marine sediments off the coasts of Maine and New Hampshire, USA
(PRESENTATION) [Presented : Nov 18, 2021]
Microplastics (MP) (< 5 mm) are ubiquitous in the environment and pose unique toxicological challenges because of their small size, measurement difficulties, and polymeric diversity, leading to uncertainties in our understanding of their fate and potential for adverse impacts....
Microplastic abundance in marine sediments off the coasts of Maine and New Hampshire, USA, and its implications for endangered species
(PRESENTATION) [Presented : Nov 05, 2021]
Microplastics (< 5 mm) are ubiquitous in the environment, contributing to marine debris and adversely impacting numerous organisms as they transfer between trophic levels. The United Nations recently found that over 800 species are impacted by marine debris globally, whether t...
Micro and Nano-Plastic Analytical Methods
(PRESENTATION) [Presented : Oct 05, 2021]
This presentation covers current methods used for extraction of microplastics, future potential instrumentation, an overview of interlaboratory comparisons, EPA's method development for micro and nanoplastics and future directions for the field. 
Identification and removal of micro- and nano-plastics: Efficient and cost-effective methods
(JOURNAL) [Published : Oct 01, 2021]
Microplastics (MPs) and nanoplastics (NPs) have gained much attention in recent times because of their ubiquitous presence, which is widely acknowledged as a threat to the environment. MPs can be of less than 5 mm size, while NPs are less than 100 nm, and all of these can be dete...
Model analysis and visualization of 6PPD-quinone fate and transport in Longfellow Creek watershed, Seattle, USA
(PRESENTATION) [Presented : Sep 14, 2021]
·         Transport of materials from the landscape controls nearshore water quality in most estuarine and coastal ecosystems, including Puget Sound. A prevailing assumption is that nearshore and coastal water quality can be improved through effective land use policies designed t...
Accelerating Polymer Degradation using Pro-oxidant Additives
(PRESENTATION) [Presented : Aug 26, 2021]
Single use plastics that are commonly used for packaging and service ware, such as bottles, bags, straws and wrappers result in land and marine pollution that as they break down into microplastics. Blending plastics with pro-oxidants could be a promising solution as they accelera...
Analytical methods for detecting and characterizing microplastics and nanoplastics in the environment
(PRESENTATION) [Presented : Aug 23, 2021]
Plastic waste is a growing concern due to potential adverse effects on human health and the environment. Microplastics (MPs) are < 5mm and are particularly hazardous due to their high surface area to volume ratio that facilitates leaching of their inherent additives and allows...
Emerging Issues in Food Waste Management: Plastic Contamination
(EXTRAMURAL DOCUMENT) [Published : Aug 17, 2021]
Wasted food is a major global environmental, social, and economic challenge. To reduce the environmental impact of food waste, the U.S. Environmental Protection Agency (EPA) encourages composting and anaerobic digestion, among other strategies, in lieu of landfilling and incinera...
Microplastics impair growth in two atlantic scleractinian coral species, Pseudodiploria clivosa and Acropora cervicornis
(JOURNAL) [Published : Apr 15, 2021]
Scleractinian coral are experiencing global and regional stressors. Microplastics (<5 mm) are an additional stressor that may cause adverse effects on coral. Experiments were conducted to investigate ingestion size limits and retention times of microspheres in a two-day exposu...
Validating the Hot Needle Method for Determining the Presence of Microplastics
(PRESENTATION) [Presented : Apr 07, 2021]
Microplastics are ubiquitous in the marine environment. To study their fate and effects in the environment, researchers need to isolate, extract, and identify plastics from environmental (e.g., water, sediment or tissue) samples. Differentiating a plastic fragment from natural ma...
Microplastics: emerging trends and research gaps
(PRESENTATION) [Presented : Apr 05, 2021]
Microplastics (MPs) are an emerging contaminant that may pose risks to human health and the environment. There are currently no standard methods to characterize and quantify MPs in environmental and biological matrices. There is a critical need for the development and standardiza...
Brief Overview of Microplastic Research at the USEPA
(PRESENTATION) [Presented : Mar 25, 2021]
This 20 minute presentation covers research under SSWR 1.4 Microplastics research. It describes method development for small micro- and nano- sized microplastics, past, present and future RARE projects associated with microplastics and ORD innovation projects associated with micr...
Microplastics in the Environment: Occurrence, Perils, and Eradication
(JOURNAL) [Published : Mar 15, 2021]
Microplastics (MPs) in various compositions, shapes, morphologies, and textures (size < 5mm) are significant sources of environmental pollution all around the world. A fraction of MPs in the total weight of plastic accumulation in the world is estimated at13.2% by 2060. These mic...
Presentation to San Francisco Estuary Institute ( Informal 10 min presentation) on microplastic activities at the US EPA
(PRESENTATION) [Presented : Mar 09, 2021]
This brief 10 minute presentation covers research under SSWR 1.4 Microplastics research. It describes method development for small micro- and nano- sized microplastics, past, present and future RARE projects associated with microplastics and ORD innovation projects associated wit...
Isotope ratio mass spectrometry and spectroscopic techniques for microplastics characterization
(JOURNAL) [Published : Mar 01, 2021]
Micro- and nano-scale plastic particles in the environment result from their direct release and degradation of larger plastic debris. Relative to macro-sized plastics, these small particles are of special concern due to their potential impact on marine, freshwater, and terrestria...
Micro- and Nanoplastics in Marine Sediment: Detecting and Assessing Impacts on Benthic Communities
(PRESENTATION) [Presented : Dec 09, 2020]
Plastic particles are now found ubiquitously in the environment, and as the abundance of plastic increases in marine systems, the magnitude of adverse biological and ecological effects of plastics of various size classes (macro-, micro-, nano-) need to be evaluated for potential ...
Extraction and Concentration of Nanoplastic Particles Using Functionalized Iron Nanoparticles and a Magnetic Flow Cell
(PRESENTATION) [Presented : Nov 19, 2020]
The proliferation of plastics in marine and freshwater systems around the world has led to concerns for aquatic life and human health. Focused research efforts are needed to better understand the nature, severity, exposure, and effects of microplastic pollution in the aquatic env...
Hybrid Method Development for Extracting and Isolating Microplastics from Marine Sediments
(PRESENTATION) [Presented : Nov 19, 2020]
Microplastics ( 70%) as compared to the previous methods. This hybrid method will be used to analyze marine sediments from four U.S. EPA Regions across the USA representing the northeast (New England and New York), mid-Atlantic, and southern California. The isolated microplastic ...
Isolating, Identifying and Quantifying Small Plastic Components of Aquatic Trash
(PRESENTATION) [Presented : Nov 19, 2020]
Aquatic trash includes plastic materials that have become widely distributed in the environment. Microplastics (MPs), with sizes smaller than 5 mm, have been a focal point of studies that include the occurrence of these MPs, the interactions of MPs with chemical pollutants, the n...
BOSC Review SSWR 1.4 Microplastics
(PRESENTATION) [Presented : Oct 29, 2020]
The objectives of the microplastics (MP) research program in SSWR 1.4 is to develop and standardize methods for the collection, extraction, identification and quantification of MP in water and sediment, as well as develop capacity for MP analysis in ORD's laboratories nationwide....
Comparison of Microplastic Isolation and Extraction Procedures from Marine Sediments
(JOURNAL) [Published : Oct 01, 2020]
Microplastics (MPs) are small (&lt;5 mm) plastic particles which pose a threat to marine ecosystems. Identifying MPs is crucial for understanding their fate and effects. Many MP extraction methods exist, but procedural differences prevent meaningful comparisons across datasets. T...
The Importance of Biofilms to the Fate and Effects of Microplastics
(BOOK CHAPTER) [Published : Sep 30, 2020]
Microplastics are global pollutants in water media ranging from drinking water to freshwater streams to oceanic pollutant gyres. Besides the obvious appearance involving a scattered presence in the environmental landscape, microplastics are ubiquitous across modern society in pro...
Hybrid method development for isolating microplastics from marine sediments
(PRESENTATION) [Presented : Apr 22, 2020]
Microplastics (1-1000 &micro;m) are a contaminant of emerging concern in marine environments. Studies suggest marine microplastics settle into sediments due to weathering, biofouling, ingestion, and other biotic and abiotic processes. Quantification and identification of micropla...
Sources, transport, measurement, and impact of nano and microplastics in urban watersheds
(JOURNAL) [Published : Apr 08, 2020]
The growing and pervasive presence of plastic pollution has attracted considerable interest in recent years, especially small (< 5 mm) plastic particles known as ‘microplastics’ (MPs). Their widespread presence may pose a threat to marine organisms globally. Most of the nano and ...
Presentation for Frontier Labs, January 2020. Measuring Microplastics: Building Best Practices & Methods for Collection, Preparation and Analysis
(PRESENTATION) [Presented : Jan 23, 2020]
While the physiological impacts of macro-plastic pollution to ecological wildlife has long been observed, there is far less known about the physiological and toxicological exposure and impacts of microplastics. The overarching challenge from a research standpoint is the lack of ...