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12 Cards in this Set
- Front
- Back
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atomic absorption
spectroscopy |
A technique in which the absorption of light by free gaseous atoms in a flame or furnace is used to measure the concentration of atoms
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atomic emission Spectroscopy
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A technique in which the emission of light by thermally excited atoms in a flame or furnace is use to measure the concentration of atoms.
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Fluorescence
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The process in which a molecule emits a photon 10-8 to 10-4 seconds after absorbing a photon. it results from a transition between states of the same spin multiplicity.
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Diode-array Spectrophotometer
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A silicon
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Pressure broadening of lines
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An effect that increases the width of an atomic spectral line; caused by collisions among atoms that result in slight variations in their energy states
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Doppler effect
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A molecule moving towards a source of radiation experiences a higher frequency than one moving away from the source
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plasma
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A gas that is hot enough to contain free ions and electrons, as well as neutral molecules
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Sputtering
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the process whereby an atomic vapor is produced by collisions with excited ions on a surface such as the cathode in a hollow-cathode lamp.
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Radiation buffer
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Potential interferents that are intentionally added in large amounts to samples and standards to swamp out their effects on atomic emission measurements
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3 Types of Mass spectrometers
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quadrupole ion-trap
time of flight magnetic sector |
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How is IR detected in IR instruments?
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ir low energy thermocouple
RTD Thermistors |
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What is FTIR and where is it used
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Fourier Transform Infrared Spectrometer
interferometer and fourier transformation are used to obtain a spectrum |
