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Rugged, portable tungsten coil atomic emission spectrometer.
Jiyan Gu1, Silvana R Oliveira, George L Donati
1Department of Chemistry, Wake Forest University, Winston-Salem, North Carolina 27109, USA.
Analytical Chemistry
|March 5, 2011
Summary
A portable tungsten coil atomic emission spectrometry system offers a simple, low-cost solution for field elemental analysis. This compact design enables rapid, precise determination of 15 elements with excellent detection limits.
Area of Science:
- Analytical Chemistry
- Spectroscopy
- Environmental Science
Background:
- Tungsten coil atomic emission spectrometry is suitable for field applications due to its simplicity, low cost, and minimal power needs.
- Existing methods often require complex cooling systems, limiting their portability.
- There is a need for robust, compact, and easily transportable elemental analysis systems for on-site measurements.
Purpose of the Study:
- To develop and characterize a new, portable, and compact tungsten coil atomic emission spectrometry system.
- To demonstrate its effectiveness for the rapid determination of multiple elements in various sample types.
- To evaluate the system's performance in terms of precision, detection limits, and accuracy.
Main Methods:
- A tungsten coil from a commercial light bulb was adapted as the atomization source.
- A compact cell design minimized background blackbody radiation, enhancing signal quality.
- A hand-held charge-coupled device (CCD) spectrometer and a portable power supply were integrated onto a ceramic base.
- The system was used to determine 15 elements, including alkali metals, alkaline earth metals, and transition metals.
Main Results:
- The developed system is robust, portable, and requires low power.
- Spectra exhibited very low background signals, facilitating sensitive measurements.
- Precision ranged from 4.3% to 8.4% relative standard deviation for repetitive measurements.
- Detection limits varied from 0.04 to 1500 μg/L for the analyzed elements.
- Accuracy was validated using standard reference materials, with recoveries between 72% and 147%.
Conclusions:
- The portable tungsten coil atomic emission spectrometry system is a viable tool for field-based elemental analysis.
- Its compact design, simplicity, and performance characteristics make it suitable for on-site environmental and material analysis.
- The system offers a cost-effective alternative to traditional laboratory-based elemental analysis techniques.
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