Related Experiment Videos
Instrumentation for simultaneous multielement atomic absorption spectrometry with graphite furnace atomization
1Agricultural Research Service, Beltsville Human Nutrition Research Center, Food Composition Laboratory, US Department of Agriculture, Building 161, BARC-East, 20705, Beltsville, MD, USA.
Analytical and Bioanalytical Chemistry
|June 1, 1996
Summary
A new multielement graphite furnace-atomic absorption spectrometry (GF-AAS) instrument using a continuum source could determine 30-40 elements simultaneously. This approach offers comparable performance to ICP-MS with reduced complexity.
Area of Science:
- Analytical Chemistry
- Spectroscopy
Background:
- Graphite furnace-atomic absorption spectrometry (GF-AAS) is typically limited to simultaneous determination of 4-6 elements.
- Hollow cathode lamps impose limitations on the number of elements that can be analyzed concurrently.
Purpose of the Study:
- To explore the feasibility of a multielement GF-AAS instrument with enhanced element determination capabilities.
- To leverage advancements in continuum source instrumentation, spectrometers, and detectors for multielement analysis.
Main Methods:
- Utilizing a continuum source in conjunction with GF-AAS.
- Implementing advanced spectrometer and detector technologies.
- Employing wavelength and time integrated absorbance measurements.
Main Results:
- Potential for simultaneous determination of 30-40 elements.
- Achieving detection limits comparable to line source AAS, with possible improvements.
- Extended calibration ranges and high-resolution spectral inspection capabilities.
Conclusions:
- A multielement GF-AAS instrument using a continuum source is feasible.
- This approach offers multielement versatility comparable to atomic emission spectrometry.
- The proposed instrument could rival ICP-MS performance with less complexity.