Skip Navigation
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Internet Explorer is no longer a supported browser.

This website may not display properly with Internet Explorer. For the best experience, please use a more recent browser such as the latest versions of Google Chrome, Microsoft Edge, and/or Mozilla Firefox. Thank you.

Your Environment. Your Health.

Progress Reports: University of Rhode Island: Developing Passive Samplers for the Detection and Bioaccumulation of PFASs in Water and Porewater

Superfund Research Program

Developing Passive Samplers for the Detection and Bioaccumulation of PFASs in Water and Porewater

Project Leader: Rainer Lohmann
Grant Number: P42ES027706
Funding Period: 2017-2022
View this project in the NIH Research Portfolio Online Reporting Tools (RePORT)

Learn More About the Grantee

Visit the grantee's eNewsletter page Visit the grantee's eNewsletter page Visit the grantee's Twitter page Visit the grantee's Instagram page Visit the grantee's Facebook page Visit the grantee's Video page Visit the grantee's Video page

Progress Reports

Year:   2019  2018  2017 

Project researchers further assessed different sampling tools for the accumulation of per- and polyfluoroalkyl substances (PFAS). They validated the use of thin SPME fibers for the detection of dissolved PFAS by measuring the effects of temperature, salinity, and exposure duration. These fibers equilibrate within 24 hours, and the uptake of individual PFAS by the fibers is linear across the range of 5 to 500 ng/mL. These fibers can be used as a rapid screening tool for PFAS at contaminated sites, and possibly in biological tissue. In separate research, passive sampling tubes for PFAS were field tested in wastewater treatment effluents and in Narragansett Bay. Sampling rates varied from 10-50 mL/day in effluents to 3-5 mL/day in the estuary and depended on external flow velocity. Field testing of these passive sampling tubes as screening tools for PFAS is underway in three Connecticut rivers. The first indoor testing of polyethylene sheets implied equilibration times of 14 days for most neutral PFAS. In Californian kindergartens, fluorotelomer alcohols (FTOHs) dominated indoor air. In a research collaboration with the U.S. Environmental Protection Agency, different bird chick tissues were screened for the presence of both legacy and emerging PFAS. Chicks hatched downstream of a fluoropolymer production site contained significant concentrations of a perfluorinated ether sulfonic acid (Nafion byproduct-2) and two perfluorinated ether carboxylic acids, which are used as replacement processing aids in fluoropolymer production. Bioaccumulation factors for these novel compounds were similar to PFOS, raising concerns about their long-range transport and adverse effects on biota.

Back
to Top