Katrina E. Varner
KATRINA E. VARNER, ENVIRONMENTAL RESEARCH SCIENTIST
Monitoring and Methods Branch
Watershed Ecosystem Characterization Division
Center for Measurement and Modeling
Office of Research and Development
US Environmental Protection Agency
My primary research focus combines my past work experience and has evolved into method development and evaluation of monitoring parameters of contaminants and hazardous waste. Method and monitoring development involve the detection, speciation, and identification of organometallics and carbon-based nanomaterials in various media. This includes the development of screening techniques for groundwater and soil. Research is carried out with the development of methods via liquid chromatography/mass spectrometry (LC/MS), capillary electrophoresis-mass spectrometry (CE-MS) and ion trap mass spectrometry hyphenated technologies (electrospray-quadrupole-ion trap) and more currently scanning electron microscopy (SEM) and single particle inductively coupled plasma mass spectrometry (sp-ICP-MS). I am now advancing LC/MS and ICP-MS techniques for the characterization and remediation of nanomaterials, including plastics, as they apply to various media including water, soil, and tissue (environmental) in daily exposure and effect on animals and humans.