Thomas A. Bruton

Thomas A. Bruton
University of California, Berkeley | UCB · Department of Civil and Environmental Engineering

About

19
Publications
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Publications

Publications (19)
Article
Full-text available
Per- and polyfluoroalkyl substances (PFAS), a highly persistent and potentially toxic class of chemicals, are added to cosmetics to increase their durability and water resistance. To assess this potential health and environmental risk, 231 cosmetic products purchased in the U.S. and Canada were screened for total fluorine using particle-induced gam...
Article
Here we synthesize current understanding of the magnitudes and methods for assessing human and wildlife exposures to poly‐ and perfluoroalkyl substances (PFAS). Most human exposure assessments have focused on two to five legacy PFAS and wildlife assessments are typically limited to targeted PFAS (up to ~30 substances). However, shifts in chemical p...
Article
Full-text available
This commentary presents a scientific basis for managing as one chemical class the thousands of chemicals known as PFAS (per- and polyfluoroalkyl substances). The class includes perfluoroalkyl acids, perfluoroalkylether acids, and their precursors; fluoropolymers and perfluoropolyethers; and other PFAS. The basis for the class approach is presented...
Article
Perfluoroalkyl acids (PFAAs) are a class of organic contaminants notable for their extreme persistence. The unique chemical properties of these compounds make them difficult to remove from water using most standard water treatment techniques. To gain insight into the possibility of remediating contaminated groundwater by in situ chemical oxidation...
Article
Full-text available
The drinking water of more than six million Americans in numerous communities has been found to contain highly fluorinated chemicals at concentrations of concern. Certain of these chemicals, including perfluorooctanoic acid and perfluorooctane sulfonic acid, are known to be persistent, bioaccumulative, and associated with adverse health outcomes in...
Article
Poly- and perfluoroalkyl substances (PFASs) have been detected in an increasing number of water supplies. In many instances, the contamination is associated with the use of PFAS-containing aqueous film-forming foams (AFFF) in firefighting activities. To investigate the potential for remediating AFFF contamination in groundwater with heat-activated...
Article
Drinking water contamination with poly-and perfluoroalkyl substances (PFASs) poses risks to the developmental, immune, metabolic, and endocrine health of consumers. We present a spatial analysis of 2013−2015 national drinking water PFAS concentrations from the U.S. Environmental Protection Agency's (US EPA) third Unregu-lated Contaminant Monitoring...
Article
Sulfate radical (SO<sub>4</sub><sup>●-</sup>) is a strong, short-lived oxidant that is produced when persulfate (S<sub>2</sub>O<sub>8</sub><sup>2-</sup>) reacts with transition metal oxides during in situ chemical oxidation (ISCO) of contaminated groundwater. Although engineers are aware of the ability of transition metal oxides to activate persulf...
Article
Nanoscale zero-valent iron (nZVI) is a strong nonspecific reducing agent that is used for in situ degradation of chlorinated solvents and other oxidized pollutants. However, there are significant concerns regarding the risks posed by the deliberate release of engineered nanomaterials into the environment, which have triggered moratoria, for example...
Article
Full-text available
Persulfate (S2O8(2-)) is being used increasingly for in situ chemical oxidation (ISCO) of organic contaminants in groundwater, despite an incomplete understanding of the mechanism through which it is converted into reactive species. In particular, the decomposition of persulfate by naturally occurring mineral surfaces has not been studied in detail...
Article
Robust methods to detect and characterize engineered nanoparticles (ENPs) in environmental samples are an urgent need, particularly given the increasing use of ENPs in consumer products. To be successful, methods should enable differentiation of ENPs from background nanoparticulates and other system components. The element specificity of inductivel...
Chapter
In recent years much attention has been devoted to the occurrence of caffeine in natural waters. It has been established that caffeine is now present in a wide variety of environments, including wastewater treatment plant (WWTP) effluents, groundwater and remote mountain lakes. However, it is less clear what the practical significance of caffeine o...