Science Inventory

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Microplastics (MP) are globally distributed throughout marine ecosystems and settle into sediments where they may threaten benthic communities; however, methods for quantifying MP in sediments have yet to be standardized. This study compares two methods for quantifying MP in sedi...

The process was tested using spiked MPs with the most common polymers (i.e., PE, PVC, PET) in different sizes and shapes in deionized water. This method was also validated using two environmentally contaminated sediments. Based on statistical analyses, our results found the analy...

Plastic particles are found in aquatic systems worldwide, and the effects of plastics on ecosystem health are of growing concern. Macro- and microplastics fragment into nanoplastic particles (&lt;1 &micro;m) in the environment, often accumulating in sediments. Marine sediments ac...

Spectral flow cytometers yield increased resolution due in part to the 64 narrow bandpass detectors and unmixing software that are used to remove autofluorescence derived from metabolic fluorescence molecules. We have applied this flow technology to study the following applicatio...

 This presentation focuses on Puget Sound applications of the U.S. EPA’s VELMA ecohydrological model for identifying watershed BMPs for reducing various pollutants impacting freshwater and marine water quality endpoints of concern. The presentation is one of six workshop presenta...

Slide presentation for community outreach and engagement.

Microplastics (MP) (&lt; 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, whet...

With its global production having increased exponentially over the past decades, and a significant proportion not being disposed of properly, plastic pollution is acknowledged as a serious concern for the environment. Plastic debris is associated with a &ldquo;cocktail of contami...

This presentation focuses on applications of the U.S. EPA’s VELMA ecohydrological model for assessing the effectiveness green and gray infrastructure improvements for reducing stormwater contaminant loads to Seattle’s Longfellow Creek. This creek, like many other urban creeks dra...

&nbsp;Detection of microplastics in cells Fluorescent microplastics particles were accumulated into cells using an in vitro cellular model system.&nbsp; These submicron fluorescence particles between 20 and 500 nm were detected in cells by measuring their fluorescence intensity o...

Since microplastic pollution has been detected in our waterways, research and monitoring have become topics of interest. However, many difficulties prevent large-scale monitoring of urban watersheds for microplastic pollution. One of which is a lack of a high thru-put method for ...

Coral reefs have been heavily impacted by anthropogenic stressors, such as global warming, ocean acidification, sedimentation, and nutrients. Recently, microplastics (MP) have emerged as another potential stressor that may also cause adverse impacts to coral. MP ingestion by scle...

The objectives of the microplastics (MP) research program in SSWR is to develop and standardize methods for the collection, extraction, identificationand quantification of MP in water and sediment, as well as develop capacity for MP analysis in ORD's laboratories nationwide. Prog...

Microplastics (MPs) are small (&lt;5 mm) plastic particles which pose potential risk to marine ecosystems. MP quantification in sediments is crucial for understanding their fate and effects in aquatic environments. Although there are many existing extraction and isolation methods...

One of EPA's primary goals is to prevent pollution and reduce risk to ecosystems from pollution. Nano/microplastics, as emerging contaminants, are largely unregulated but have the potential to adversely affect organisms in virtually all environmental compartments. &nbsp;Tire wear...

Hundreds of review studies have been published focusing on microplastics (MPs) and their environmental impacts. With the microbiota colonization of MPs being firmly established, MPs became an important carrier for contaminants to step inside the food web all the way up to humans....

This presentation is for the California Department of Resources Recycling and Recovery (CalRecycle) Policy Development and Analysis Office. Microplastics, which are plastic pieces less than 5 mm, are ubiqutous in marine environments. These small plastic pieces enter the environme...

Microplastics are small plastic particles found ubiquitously in marine environments. In this study, a hybridized method was developed for the extraction of microplastics (45&ndash;1000&nbsp;&mu;m) from sediments using&nbsp;sodium bromide&nbsp;solution for density separation. Meth...

Microplastics (MPs) and nanoplastics (NPs) are polymer particles with a size of &lt; 5mm and &lt; 1000nm, respectively. They are potentially hazardous due to their high surface area to volume ratio that facilitates leaching of their inherent additives and allows them to be effici...

Research involving microplastics (polymer particles less than 5mm) is a quickly growing field and one of the newest aspects is the study of nanoplastics (less than 1 micron). Smaller size and increased surface area to volume ratio gives nanoplastics increased chance for uptake by...

As concern about the impact of conventional, petroleum-based plastics grows, bioplastics (BP) and degradable plastics (DPs) have emerged as potential sustainable alternatives.&nbsp; But the fate of BPs and DPs in the environment it remains unclear and some may breakdown into nano...

While the pervasiveness of plastic pollution in the environment is well-established, little is known regarding the extent, distribution, and effects of the smallest size fraction, referred to as nanoplastics (generally considered to be plastic particles &le;1 &micro;m). Nanoplast...

Microplastics (MP) (&lt; 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....

Microplastics (&lt; 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...

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.&nbsp;