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Inorganic%20Analysis

Inorganic%20Analysis - Inorganic Analysis Inorganic...

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Unformatted text preview: Inorganic Analysis Inorganic Analysis Analyzing substances that do not contain carbon Inorganic substances Inorganic substances • • • Organic substances contain carbon Inorganic substances are everything else Things like metals (copper, zinc, lead, iron, etc), salts (sodium chloride, potassium nitrate, etc), gases (chlorine, iodine, etc) Physical evidence that involves Physical evidence that involves inorganic materials • • • • Gunshot residue Bullet fragments (CBLA no longer valid) Some components of soil (minerals) Some components of paint (metallic portion) • Glass (metallic portion) Inorganic Analysis Inorganic Analysis • Analysis involves determining what elements are present • • • • • (elemental analysis) Polarized light microscopy – appearance between crossed polars Fluorescence microscopy – UV light Emission spectroscopy­ energizing with a plasma torch (ICP) Atomic absorption – heated to vaporization; analyzing the color given off (each element exhibits a characteristic color) XRF – X­ray fluorescence; x­ray energy is absorbed, then released (usually combined with SEM) SEM – scanning electron microscope – SEM – electron beam instead of light SEM of lamp filament SEM of lamp filament ICP spectrometer ICP spectrometer X­Ray Fluorescence (XRF) X­Ray Fluorescence (XRF) Hand­held XRF Hand­held XRF ...
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  • Spring '11
  • Hueske
  • Inorganic Analysis Inorganic Analysis, substances Inorganic substances, Inorganic Analysis, carbon Inorganic substances, XRF Hand­held XRF

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