Term
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Definition
used to measure Na, K, Mg, and Li
good only for elements that are easily excited and don't require high temperatures
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Term
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Definition
| flame --> monochrometer --> photodetector |
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Term
| Flame Photometry - Fuel Types |
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Definition
acetylene
propane
oxygen
natural gas
compressed air
combo and type of fuel determine the temp, different metals require a different temp |
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Term
| Flame Photometry - How It Works |
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Definition
1)sample matrix evaporates followed by atomization of the sample
2)atoms present in high temp zone are excited to higher levels by absorbing energy from the flame
3)as atoms return to the ground state radiation is emitted in a wavelength depending on the energy level the atoms dropped from
4)intensity of the color is proportional to amount of the element burned in the flame |
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Term
| Flame Photometry - Monochromator |
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Definition
| pre-selected filter (depending on the atom in question) is used and the intensity of the emission line is measure and is related to the concentration in the solution |
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Term
| Flame Photometry - Photodetector |
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Definition
| usually a phototube or photomultiplier |
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