Fate & Transport Assessment

Since mobility, persistence, and bioavailability are linked to chemical and physical properties, we employ advanced analytical techniques with standardized methods to quantify the state of nanomaterials in natural systems. Fate and transport studies determine how nanomaterials interact with natural matrices in order to predict their behavior in the event of an environmental release.

Map-animated

Advanced characterization, composition, and mapping of nanoparticles on solid phase samples is conducted using synchrotron-based techniques

DLVO

ERDC has developed mechanistic models to predict fate of nanoparticles in realistic environmental conditions

Capabilities

  • Inductively Coupled Plasma Mass Spectrometry with Dynamic Reaction Cell interference
    reduction capability
  • Laser Light Scattering
  • Nuclear Magnetic Resonance
  • Particle Charge (Zeta potential)
  • Quartz Crystal Microbalance

Education

  • Ph.D., Iowa State University, Ames, IA, 2004, Soil Science
  • M.S., University of Kentucky, Lexington, KY, 1998, Plant & Soil Science
  • B.S., Brigham Young University, Provo, UT, 1995, Agronomy

Research Projects

  • Metal/Metalloid speciation in coal-combustion fly ash after prolonged submersion in a natural river system
  • Quantity-Intensity nutrient ion relationships in the soil residence times of munition constituents
  • Nanoparticle storage of cavitation-generated radical species.
  • Transport of B. subtilis spores through environmental and anthropogenic porous media.

Mark Chappell

Soil Scientist

Publications

Education

  • M.S., Mississippi College, Clinton, MS, 2011, Biology
  • B.S., Mississippi College, Clinton, MS, 2008, Biology Medical Sciences

Research Projects

  • Fate and transport of various nanoparticles in soils and sediments
  • Synthesis of nanoparticles and purification by tangential flow filtration
  • Solid and liquid NMR analysis of soil humic backgrounds and spin-trapped radicals
  • Analysis of nanoparticles and nanoparticle/salt/humic systems

Leslie F. Miller

Research Biologist

Education

  • B.S., Texas A&M University, College Station, TX, 1987 Biology

Research Projects

  • Mobility of nanoparticles in soils and sediments
  • Dissolution and surface reactivity of nanoparticles in natural systems
  • Stability of nanomaterials under environmental conditions.
  • Expertise in volatile, semi-volatile, and particulate emissions of organic and inorganic compounds from soils, sediments, and aqueous systems.

Cynthia L Price

Research Biologist

Publications