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Photoelectric flame photometer



A photoelectric flame photometer is a device used in inorganic chemical analysis to determine the concentration of certain metal ions.

In principle, it is a controlled flame test with the intensity of the flame colour quantified by photoelectric circuitry. The sample is introduced to the flame at a constant rate. Filters select which colours the photometer detects and exclude the influence of other ions. Before use, the device requires calibration with a series of standard solutions of the ion to be tested.

Flame photometry is crude but cheap compared to flame emission spectroscopy, where the emitted light is analysed with a monochromator. Its status is similar to that of the colorimeter (which uses filters) compared to the spectrophotometer (which uses a monochromator).

 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Photoelectric_flame_photometer". A list of authors is available in Wikipedia.
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