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Nanoscale Modification and Functionalization of Carbon Electrodes for the Detection of Harmful Organic Chemicals in Water such as Phenol and Domoic Acid

The presence of harmful organic chemicals produced by human activities and naturally occurring biological toxins released from microorganisms (including phenol) in our drinking water and domoic acid in ecosystems is a serious threat to human and environmental health due to their carcinogenic and lethal properties. As a result, in parallel with the effective treatment of the toxic water contaminants (toxins), there is an urgent need to develop more innovative and effective in-situ measurement methods to detect such toxins of interest in water, and thus assess their environmental fate and distribution in water bodies and ecosystems. In this proposal, researchers will investigate novel ideas to synthesize and evaluate nanostructured electrodes to detect phenol and domoic acid. Typical carbon electrodes are modified with nanostructured TiO2 with a tailor-designed porous structure for facilitating adsorption of the target compound of interest and further functionalized with chitosan-tyrosinase composite film, enhancing the selectivity and sensitivity of the electrode towards phenol and domoic acid. The nanostructured TiO2 chitosan-tyrosinase modified carbon electrode is able to easily monitor the compounds in-situ using electrochemical instrumentation. The electrode developed in this project should meet the profitable features of electrode including quantitative and qualitative detection, sensitivity, mechanical stability, physical rigidity, and enhanced catalytic properties. (cyanotoxins); (domoic acid); (phenol); (phenols); (chemicals of concern); (chemical of concern); (toxic organics); (toxic organic); (human health); (drinking water); (restrictions on drinking water)

(Matching Funds) $54,405 USD (Estimates)

In progress
Start Date
End Date
Dionysios D. DionysiouPrincipal Investigator
Associated with 2 projects
Suzanne LunsfordResearcher
Associated with 1 projects
U.S. Geological Survey $ 27,174.00USDEstimates

Funding 13 projects for a total of $538,321.00
Scope of Study
Laboratory Investigation
Scale of Phenomena
Impact of Pollutants
Toxic Organics
State Province
Annex Numbers
Persistent Toxic Substances
Remedial Action Plans and Lakewide Management Plans

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