Ads
related to: atomic absorption spectroscopy example
Search results
Results From The WOW.Com Content Network
Atomic absorption spectroscopy (AAS) is a spectroanalytical procedure for the quantitative measurement of chemical elements. AAS is based on the absorption of light by free metallic ions that have been atomized from a sample.
For all atomic spectroscopy, a sample must be vaporized and atomized. For atomic mass spectrometry, a sample must also be ionized. Vaporization, atomization, and ionization are often, but not always, accomplished with a single source. Alternatively, one source may be used to vaporize a sample while another is used to atomize (and possibly ionize).
Graphite furnace atomic absorption spectroscopy (GFAAS), also known as electrothermal atomic absorption spectroscopy (ETAAS), is a type of spectrometry that uses a graphite-coated furnace to vaporize the sample.
Atomic absorption spectroscopy and atomic emission spectroscopy involve visible and ultraviolet light. These absorptions and emissions, often referred to as atomic spectral lines, are due to electronic transitions of outer shell electrons as they rise and fall from one electron orbit to another.
They are necessary parts of inductively coupled plasma atomic emission spectroscopy , inductively coupled plasma mass spectrometry (ICP-MS), and atomic absorption spectroscopy (AAS). Applications [ edit ]
For atoms in the gas phase the principal effects are Doppler and pressure broadening. Lines are relatively sharp on the scale of measurement so that applications such as atomic absorption spectroscopy (AAS) and Inductively coupled plasma atomic emission spectroscopy (ICP) are used for elemental analysis. Atoms also have distinct x-ray spectra ...
Atomic absorption spectroscopy (AAS) Atomic emission spectroscopy (AES) Atomic fluorescence spectroscopy (AFS) Alpha particle X-ray spectrometer (APXS) C.
When working with limiting amount of sample, an analyst might need to make a single addition, but it is generally considered a best practice to make at least two additions whenever possible. [5] Note that this is not limited to liquid samples. In atomic absorption spectroscopy, for example, standard additions are often used with solid as the ...
Ad
related to: atomic absorption spectroscopy example