Instruments - Analytical
Perkin-Elmer Graphite Furnace Atomic
Absorption Spectrometer
Model 4100ZL
Composed of:
- Electrodeless discharge lamps with
external power supply
- Hollow cathode lamps with internal
power supply
- AS 800 autosampler
- WinLab software
Atomic-absorption (AA) spectroscopy
uses the absorption of light to measure the concentration of gas-phase
atoms. The analyte atoms or ions must be vaporized in a flame or
graphite furnace to be analyzed. The element containing vapor is
contained long enough for the absorption of light at an element specific
wavelength to be read by the spectrometer.
Current Applications:
As, Al, Cu, Cr, Cd, Ni, Pb, Se, and Zn at ppb levels
Additional Elements:
Analyses of many other elements with available EDL or HCL lamps.
Sample matrices:
- Water (drinking water, natural
waters)
- Soil/Sediment
- Biological tissue
- Agricultural products
- Food products
