Atomic absorption spectroscopy Instrumentation |
|
Concentration measurements
are usually determined from a working curve after calibrating the instrument
with standards of known concentration. |
|
|
|
Atomizer Atomic absorption spectroscopy requires that the atoms of the element being investigated be in the gas phase. Ions or atoms in a sample must undergo vaporisation in a high-temperature source such as a flame. Light separation (Monochromator) and detection Atomic absorption spectrometers use monochromators and detectors for uv and visible light. The main purpose of the monochromator is to isolate the absorption line from from background light and from molecular emissions originating in the flame. Sometimes multi-element lamps are used which produce a large number of emitted lines and a monochromator is necessary for isolation of the line of interest. |
|