Atomic Absorption Spectrophotometer (AAS) is a kind of instrument for the inorganic analysis. It is widely used in environmental protection, medicine, sanitation, metallurgy, geology and petrochemical industry fields for micro and trace analysis. Atomic Absorption Spectrophotometer can analyze more than seventy kinds of elements. With the development of instrument accessories and analyzing technology, more objects, from element to morphology and from nonmetallic anion to gas-phase molecule, could be analyzed directly or indirectly.
