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Toxic Metals in Mine Tailings Dust

Toxic Metals in Mine Tailings Dust. Presented by: Paul Rheinheimer Acknowledgements: NASA Space Grant Consortium Susan Brew Brian Barbaris. Research Team Members.

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Toxic Metals in Mine Tailings Dust

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  1. Toxic Metals in Mine Tailings Dust Presented by: Paul Rheinheimer Acknowledgements: NASA Space Grant Consortium Susan Brew Brian Barbaris

  2. Research Team Members Brian Barbaris, Dr. Eric Betterton, Dr. William Conant, Janae Csavina Dr. Song Gao, Shannon Reed, Paul Rheinheimer, Dr. Eduardo Saez, and Anna Wonashutz,

  3. Project Focus: Mine Tailings Dust Health concerns: Respiratory Metals: As, Cd, Pb, Cu, water soluble ions (Cl-, SO4-, Na+, etc…)

  4. LocationsASARCO Hayden Mine Tailings –coarse particles Active Smelter – fine particles

  5. Mine Tailings –coarse particles LocationsIron King

  6. Micro-Orifice-Uniform-Deposit-Impactor (MOUDI) • 10-stage impaction plates • Vacuum pump • Particle size captured ranges from 1-18 micrometers

  7. Scanning Mobility Particle Scanner (SMPS), Inductively Coupled Plasma – Mass Spectrometry (ICP-MS), and Ion Chromatography (IC) • SMPS gives # concentrations of particles sized from 0 to 1 micrometer • ICP-MS measures heavy metal concentrations from MOUDI filters • IC measures water soluble ions from MOUDI filters

  8. SMPS Data at ASARCO Hayden, plot of particle distribution. (The measurements were made upwind of mine tailings and downwind of a slag heap) Heavy metal concentrations at Iron King site.

  9. Future Areas of Research • Correlate data to wind speed and direction • Particle analysis by Scanning Electron Microscope Wind rose of Iron King As analysis by SEM

  10. End of presentation. Thank you very much!

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