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flame photometry |
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flame photometry Etymology: L, flagrare, to burn; Gk, phos, light, metron, measure measurement of the wavelength of light rays emitted by excited metallic electrons exposed to the heat energy of a flame, used to identify characteristics in clinical specimens of body fluids. The intensity of the emitted light is proportional to the concentration of atoms in the fluid, and a quantitative analysis can be made on that basis. In the clinical laboratory, flame photometry was once used to measure sodium, potassium, and lithium levels but is no longer used routinely. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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14 Fecal N losses were measured by the micro-Kjeldahl method,15 energy was measured by bomb calorimetry,16 and fecal and urine Na, K, Ca, and Mg losses were quantified by flame photometry. After initial problems with interference, some of these methods (notably for Na+ and K+) quickly replaced flame photometry in many laboratories. |
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