dr Ryszard Dobrowolski
Wydział Chemii, Uniwersytet Marii Curie-Skłodowskiej
Techniki i akcesoria rozszerzające możliwości pomiarowe w płomieniowej atomowej spektrometrii absorpcyjnej
dr Andrew Gaal
GBC Scientific Equipment
FAAS is today a well developed technique used routinely throughout the world for routine trace elemental analysis of a wide variety of sample types. However as an analytical tool FAAS is not without its limitations and for many years people have worked to improve the precision and accuracy of this commonly used technique. Today sample preparation plays a major role in method development with the use of many chemical, viscosity and Ionization modifiers being used to improve S/N ratio's and analyte sensitivity. To this end manufacturers of Atomic Absorption Spectroscopy have been working on ways to improve instrument design and performance thus minimizing the need for complex sample preparations and concentrations. Four techniques used for improving FAAS performance will be presented. The Super Lamp, Hydride Generation, Mercury Concentrator and the Atom Trap. Additionally we will present data indicating the further advantages obtained when combining these techniques.