07/15/2024
By Kwok Fan Chow

The Kennedy College of Science, Department of Chemistry, invites you to attend a Ph.D. Dissertation defense by Chuntao Wang entitled “Surface-Enhanced Raman Spectroscopy for Rapid Detection and Identification of PFAS and in Firefighting Foams.”

Degree: Doctoral
Location: Olney Room 518
Date: Thursday, July 25, 2024
Time: 10 a.m.

Committee Chair:
Prof. Michael Ross, Department of Chemistry, University of Massachusetts Lowell

Committee Members:

  • Prof. David Ryan, Department of Chemistry, University of Massachusetts Lowell
  • Prof. Kwok-Fan Chow, Department of Chemistry, University of Massachusetts Lowell
  • Prof. Marina Ruths, Department of Chemistry, University of Massachusetts Lowell

Abstract:
This thesis describes the design and synthesis of metal plasmonic nanoparticles for the rapid detection and analysis of per- and polyfluoroalkyl substances (PFAS) using surface-enhanced Raman spectroscopy (SERS). The specific focus lies in identifying molecular PFAS species, using complementary chemical techniques for analysis, and developing an approach for quantification in complex firefighting foams. PFAS are important targets for detection and assessment due to their environmental, human health, and workplace exposure challenges. Their environmental persistence and toxicity, in particular, present an enormous environmental and regulatory burden. This thesis focuses on the innovative use of gold concave cube plasmonic nanoparticles to enhance the sensitivity and capability of SERS to ppm levels in complex mixtures. Individual PFAS-containing foams can be distinguished from fluorine-free foams, and the 6 PFAS regulated in Massachusetts can be identified in complex mixtures.

All interested students and faculty members are invited to attend.